Product Description
Products Description
Tie Down Engineering components make it possible for you to build trailer spindle and spindle for heavy duty truck that exactly fit your specifications. By choosing the hub, spindle and axle tube you need and building it yourself, you save money and get a better result. Axle tubes are available in heavy duty capacities, with corresponding spindles and hubs.
| Item | Spindle Types That We Can Produce |
| 1 | Light Trailer Axle Straight Spindle |
| 2 | Light Trailer Axle Drop Spindle |
| 3 | Axle Spindle For Heavy Duty Trucks |
| 4 | Axle Spindles For Heavy Construction Machinery |
Production Process
Inspection
Quality Control
The company regards quality as cooperate life,as here to high standard and and high quality.We got ISO9001:2008 and TS16949 system,also sets up the consummate testing system,perfects quality assurance system,implements the rigid quality management,our aim is to realize zero defect,ensure each product to satisfy user.
The main testing equipment includes:3-coordinate measuring machine,Optical Spectrum Analyzer,tensile testing machine,impact testing machine,fluorescent magnetic particle detector,hardness tester,ultrasonic flaw detector..etc.
Packing and Transport
Packing Details:
- Bubble bag and color box per piece used for sales directly, many boxes per carton box, then packed in standard export plywood case/pallet
- Carton box+standard export plywood case/pallet
- Bubble bag per piece, then packed in standard export plywood case directly
- Export plywood case directly
All packing conform to the long-distance transportation which is strong. If clients have special requirement about packing, it’s acceptable.
Company Profile
Clients Comment
Why Choose Us?
1. Are you a manufacturer or a trading company?
We are a professional manufacturer with over 22 years’ export experience for designing and producing forging parts and 15 years for aluminum forging parts
2. How can I get some samples?
If you need, we are glad to offer you 1 sample for free, but if the parts are customized, the clients are expected to pay the mould cost.
3. Can you make forging according to our drawing?
Yes, we can make forging parts according to your drawing, 2D or 3D. If the 3D model can be supplied, the development of the tooling can be more efficient. But without 3D, based on 2D drawing we can still make the samples properly approved.
4. Can you make forging based on our samples?
Yes, we can make measurement based on your samples to make drawings for tooling making.
5.How many days will samples be finished?
A:Generally, the mould and sample will be finished within 1 month.
6. What’s your quality control device in house?
We have spectrometer in house to monitor the chemical property, tensile test machine to control the mechanical property as NDT checking method to control the forging detect under the surface of forging parts.
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| After-sales Service: | One Year Guarantee |
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| Warranty: | One Year Guarantee |
| Type: | Axle |
| Samples: |
US$ 50/Piece
1 Piece(Min.Order) | Order Sample according to customers′ drawings
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| Customization: |
Available
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.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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What are the signs that indicate a need for trailer spindle replacement or maintenance, and how can they be diagnosed?
Proper maintenance and timely replacement of trailer spindles are essential for safe towing. Here’s a detailed explanation of the signs that indicate a need for spindle replacement or maintenance and how they can be diagnosed:
- 1. Excessive Play or Movement: If you notice excessive play or movement in the trailer wheels when jacked up or during towing, it may indicate worn-out or damaged spindles. To diagnose this, you can grasp the tire at the top and bottom and try to wiggle it. Excessive movement or play indicates a potential issue with the spindles that requires inspection and possible replacement.
- 2. Abnormal Noises: Unusual noises, such as grinding, squeaking, or rumbling sounds, coming from the trailer wheels while in motion can be a sign of spindle problems. These noises may indicate worn-out bearings, insufficient lubrication, or misaligned spindles. To diagnose the issue, you can listen for any unusual noises while towing or rotating the trailer wheels by hand. If abnormal sounds are present, it is recommended to inspect the spindles and bearings for damage or wear.
- 3. Irregular Tire Wear: Pay attention to the tire wear patterns on the trailer. If you notice uneven or abnormal tire wear, such as cupping, feathering, or bald spots, it could be an indication of misaligned or damaged spindles. To diagnose this, visually inspect the tires for any signs of uneven wear and check for any underlying issues with the spindles or suspension system.
- 4. Excessive Heat: Overheating of the trailer spindles can be a sign of bearing or lubrication problems. If you feel excessive heat when touching the spindle after a tow, it may indicate inadequate lubrication, worn-out bearings, or other issues. To diagnose this, carefully touch the spindles after towing and check for any unusual heat levels. If the spindles feel excessively hot, it is advisable to inspect and address the cause promptly.
- 5. Leaking or Contaminated Grease: Grease leakage or contamination around the spindle area can indicate a problem with the bearings or the spindle seal. Inspect the spindles for any signs of grease leaks or contamination. Excessive grease buildup or the presence of water or debris in the grease may indicate a need for spindle maintenance or bearing replacement.
- 6. Visual Inspection: Regular visual inspection of the spindles is crucial for identifying any visible signs of damage, corrosion, or wear. Look for cracks, fractures, or deformities in the spindle structure. Inspect the spindle surface for signs of rust or corrosion that can weaken the spindle’s integrity. Additionally, check for any loose or missing components, such as nuts or bolts, that secure the spindle to the trailer frame.
- 7. Professional Inspection: If you are uncertain about the condition of the trailer spindles or if you notice any of the aforementioned signs, it is advisable to seek a professional inspection. A qualified mechanic or trailer specialist can perform a thorough examination of the spindles, bearings, and associated components to accurately diagnose any issues and recommend appropriate maintenance or replacement.
Proactive monitoring, regular inspection, and prompt diagnosis of any signs indicating a need for trailer spindle replacement or maintenance are crucial for maintaining safe towing conditions. It is important to address spindle issues promptly to prevent further damage, ensure optimal performance, and minimize the risk of accidents or failures during towing.
Can trailer spindles be customized for specific trailer types or load capacities?
Yes, trailer spindles can be customized to meet the specific requirements of different trailer types or load capacities. Here’s a detailed explanation:
Trailer spindles are available in various sizes, configurations, and materials to accommodate different trailer types and load capacities. Manufacturers offer a range of spindle options designed to meet specific application needs.
- Trailer Types:
Trailer spindles can be customized to suit different trailer types such as utility trailers, boat trailers, RV trailers, horse trailers, and more. Each trailer type may have unique requirements in terms of load capacity, axle configuration, wheel size, and operating conditions. Customized spindles are designed to fit the specific dimensions and specifications of the trailer type.
- Load Capacities:
Trailer spindles can be customized to handle varying load capacities. The load capacity of a trailer is determined by factors such as the trailer’s construction, axle rating, suspension system, and intended use. Customized spindles can be engineered to accommodate the specific load capacity requirements, ensuring that they are robust enough to handle the expected weight without compromising safety or performance.
- Materials and Construction:
Trailer spindles can be customized based on the materials used and their construction. Different materials, such as steel or aluminum, may be chosen depending on factors such as strength, weight, and corrosion resistance. Customized spindles can be manufactured using specific materials and construction techniques to meet the desired performance characteristics and environmental considerations.
- Braking Systems:
Customized trailer spindles can be designed to accommodate specific braking systems. Some trailers may require spindles with integrated brake provisions or compatibility with specific brake assemblies, such as hydraulic or electric brakes. Customization ensures that the spindles are properly configured to work in conjunction with the trailer’s braking system, enhancing safety and control during towing.
- Manufacturer Recommendations:
When customizing trailer spindles, it is important to consider the manufacturer’s recommendations or specifications. The trailer manufacturer can provide guidance on the suitable spindle options based on the trailer model, intended use, and performance requirements. Following the manufacturer’s recommendations ensures compatibility and adherence to warranty and safety standards.
It’s worth noting that while customization options are available, it is essential to work with reputable manufacturers or suppliers with expertise in trailer components. They can provide guidance, technical support, and ensure that the customized spindles meet the necessary quality and safety standards.
In summary, trailer spindles can be customized to match specific trailer types or load capacities. Customization allows for the selection of spindles that are tailored to the trailer’s requirements in terms of load capacity, materials, construction, and braking systems. By considering manufacturer recommendations and working with trusted suppliers, customized spindles can be obtained to ensure optimal performance, safety, and compatibility with the trailer.
What are the different types and sizes of trailer spindles available in the market?
Trailer spindles come in various types and sizes to accommodate different trailer configurations and towing requirements. Here’s a detailed explanation of the different types and sizes of trailer spindles available in the market:
- Straight Spindle:
The straight spindle is the most common type of trailer spindle. It features a straight design without any taper. These spindles are typically used in trailers that require a simple and straightforward wheel attachment.
- Tapered Spindle:
Tapered spindles have a tapered shape, with the diameter gradually decreasing from the base towards the end. The taper allows for a secure and tight fit when the spindle is inserted into the wheel hub assembly. Tapered spindles are widely used in trailers and provide enhanced stability by minimizing the potential for wheel detachment.
- Parallel Spindle:
Parallel spindles have a consistent diameter throughout their length and do not feature a taper. These spindles offer simplicity and ease of installation, making them suitable for certain trailer applications where a tapered design is not required.
- Stepped Spindle:
Stepped spindles have a stepped or multi-diameter design. They feature different diameter sections along their length, allowing for compatibility with wheels of varying sizes. Stepped spindles are often used in trailers that need to accommodate different wheel sizes or in situations where wheel upgrades are common.
- Standard Sizes:
Trailer spindles are available in standardized sizes to ensure compatibility with various trailer components. The most common spindle sizes include 1-inch, 1-1/16-inch, 1-3/8-inch, and 1-3/4-inch diameters. These sizes are commonly used in light to medium-duty trailers.
- Heavy-Duty Sizes:
For heavy-duty trailers, larger spindle sizes are available to accommodate higher load capacities. These sizes can range from 2 inches to 3-1/2 inches in diameter, depending on the specific requirements of the trailer.
- Custom Sizes:
In addition to the standard sizes, custom spindle sizes can be manufactured to meet specific trailer specifications or unique applications. These custom spindles are designed and produced based on the specific requirements provided by the trailer manufacturer or the customer.
It’s worth noting that the availability of different types and sizes of trailer spindles may vary depending on the region and specific manufacturers. It is essential to consult with trailer manufacturers, suppliers, or industry professionals to determine the appropriate spindle type and size for a particular trailer application.
In summary, the market offers various types and sizes of trailer spindles, including straight, tapered, parallel, and stepped spindles. Standard sizes range from 1 inch to 1-3/4 inches, while heavy-duty sizes can be larger, from 2 inches to 3-1/2 inches in diameter. Custom spindle sizes are also available to meet specific trailer requirements. Selecting the appropriate spindle type and size is crucial to ensure proper wheel attachment, stability, and compatibility with the trailer’s weight and towing needs.
editor by Dream 2024-05-07
China CNC machine tool custom mechanical spindle gear custom drive shaft
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How to Calculate Stiffness, Centering Force, Wear and Fatigue Failure of Spline Couplings
There are various types of spline couplings. These couplings have several important properties. These properties are: Stiffness, Involute splines, Misalignment, Wear and fatigue failure. To understand how these characteristics relate to spline couplings, read this article. It will give you the necessary knowledge to determine which type of coupling best suits your needs. Keeping in mind that spline couplings are usually spherical in shape, they are made of steel.
Involute splines
An effective side interference condition minimizes gear misalignment. When two splines are coupled with no spline misalignment, the maximum tensile root stress shifts to the left by five mm. A linear lead variation, which results from multiple connections along the length of the spline contact, increases the effective clearance or interference by a given percentage. This type of misalignment is undesirable for coupling high-speed equipment.
Involute splines are often used in gearboxes. These splines transmit high torque, and are better able to distribute load among multiple teeth throughout the coupling circumference. The involute profile and lead errors are related to the spacing between spline teeth and keyways. For coupling applications, industry practices use splines with 25 to fifty-percent of spline teeth engaged. This load distribution is more uniform than that of conventional single-key couplings.
To determine the optimal tooth engagement for an involved spline coupling, Xiangzhen Xue and colleagues used a computer model to simulate the stress applied to the splines. The results from this study showed that a “permissible” Ruiz parameter should be used in coupling. By predicting the amount of wear and tear on a crowned spline, the researchers could accurately predict how much damage the components will sustain during the coupling process.
There are several ways to determine the optimal pressure angle for an involute spline. Involute splines are commonly measured using a pressure angle of 30 degrees. Similar to gears, involute splines are typically tested through a measurement over pins. This involves inserting specific-sized wires between gear teeth and measuring the distance between them. This method can tell whether the gear has a proper tooth profile.
The spline system shown in Figure 1 illustrates a vibration model. This simulation allows the user to understand how involute splines are used in coupling. The vibration model shows four concentrated mass blocks that represent the prime mover, the internal spline, and the load. It is important to note that the meshing deformation function represents the forces acting on these three components.
Stiffness of coupling
The calculation of stiffness of a spline coupling involves the measurement of its tooth engagement. In the following, we analyze the stiffness of a spline coupling with various types of teeth using two different methods. Direct inversion and blockwise inversion both reduce CPU time for stiffness calculation. However, they require evaluation submatrices. Here, we discuss the differences between these two methods.
The analytical model for spline couplings is derived in the second section. In the third section, the calculation process is explained in detail. We then validate this model against the FE method. Finally, we discuss the influence of stiffness nonlinearity on the rotor dynamics. Finally, we discuss the advantages and disadvantages of each method. We present a simple yet effective method for estimating the lateral stiffness of spline couplings.
The numerical calculation of the spline coupling is based on the semi-analytical spline load distribution model. This method involves refined contact grids and updating the compliance matrix at each iteration. Hence, it consumes significant computational time. Further, it is difficult to apply this method to the dynamic analysis of a rotor. This method has its own limitations and should be used only when the spline coupling is fully investigated.
The meshing force is the force generated by a misaligned spline coupling. It is related to the spline thickness and the transmitting torque of the rotor. The meshing force is also related to the dynamic vibration displacement. The result obtained from the meshing force analysis is given in Figures 7, 8, and 9.
The analysis presented in this paper aims to investigate the stiffness of spline couplings with a misaligned spline. Although the results of previous studies were accurate, some issues remained. For example, the misalignment of the spline may cause contact damages. The aim of this article is to investigate the problems associated with misaligned spline couplings and propose an analytical approach for estimating the contact pressure in a spline connection. We also compare our results to those obtained by pure numerical approaches.
Misalignment
To determine the centering force, the effective pressure angle must be known. Using the effective pressure angle, the centering force is calculated based on the maximum axial and radial loads and updated Dudley misalignment factors. The centering force is the maximum axial force that can be transmitted by friction. Several published misalignment factors are also included in the calculation. A new method is presented in this paper that considers the cam effect in the normal force.
In this new method, the stiffness along the spline joint can be integrated to obtain a global stiffness that is applicable to torsional vibration analysis. The stiffness of bearings can also be calculated at given levels of misalignment, allowing for accurate estimation of bearing dimensions. It is advisable to check the stiffness of bearings at all times to ensure that they are properly sized and aligned.
A misalignment in a spline coupling can result in wear or even failure. This is caused by an incorrectly aligned pitch profile. This problem is often overlooked, as the teeth are in contact throughout the involute profile. This causes the load to not be evenly distributed along the contact line. Consequently, it is important to consider the effect of misalignment on the contact force on the teeth of the spline coupling.
The centre of the male spline in Figure 2 is superposed on the female spline. The alignment meshing distances are also identical. Hence, the meshing force curves will change according to the dynamic vibration displacement. It is necessary to know the parameters of a spline coupling before implementing it. In this paper, the model for misalignment is presented for spline couplings and the related parameters.
Using a self-made spline coupling test rig, the effects of misalignment on a spline coupling are studied. In contrast to the typical spline coupling, misalignment in a spline coupling causes fretting wear at a specific position on the tooth surface. This is a leading cause of failure in these types of couplings.
Wear and fatigue failure
The failure of a spline coupling due to wear and fatigue is determined by the first occurrence of tooth wear and shaft misalignment. Standard design methods do not account for wear damage and assess the fatigue life with big approximations. Experimental investigations have been conducted to assess wear and fatigue damage in spline couplings. The tests were conducted on a dedicated test rig and special device connected to a standard fatigue machine. The working parameters such as torque, misalignment angle, and axial distance have been varied in order to measure fatigue damage. Over dimensioning has also been assessed.
During fatigue and wear, mechanical sliding takes place between the external and internal splines and results in catastrophic failure. The lack of literature on the wear and fatigue of spline couplings in aero-engines may be due to the lack of data on the coupling’s application. Wear and fatigue failure in splines depends on a number of factors, including the material pair, geometry, and lubrication conditions.
The analysis of spline couplings shows that over-dimensioning is common and leads to different damages in the system. Some of the major damages are wear, fretting, corrosion, and teeth fatigue. Noise problems have also been observed in industrial settings. However, it is difficult to evaluate the contact behavior of spline couplings, and numerical simulations are often hampered by the use of specific codes and the boundary element method.
The failure of a spline gear coupling was caused by fatigue, and the fracture initiated at the bottom corner radius of the keyway. The keyway and splines had been overloaded beyond their yield strength, and significant yielding was observed in the spline gear teeth. A fracture ring of non-standard alloy steel exhibited a sharp corner radius, which was a significant stress raiser.
Several components were studied to determine their life span. These components include the spline shaft, the sealing bolt, and the graphite ring. Each of these components has its own set of design parameters. However, there are similarities in the distributions of these components. Wear and fatigue failure of spline couplings can be attributed to a combination of the three factors. A failure mode is often defined as a non-linear distribution of stresses and strains.
editor by czh 2023-02-16
China Standard Original Brand CZPT CZPT CZPT CZPT Manufacturer Distributor Taper Roller Bearing for Machine Tool Spindle Parts Motor Parts 30334 30336 30334jr 30336jr near me supplier
Product Description
Tapered roller bearings are separable bearings. Both the inner and outer rings of the bearing have tapered raceways. This type
of bearing is divided into single row, double row and 4 row tapered roller bearings according to the number of rows installed.
Tapered roller bearings are mainly subjected to combined radial and axial loads based on the radial direction. Tapered roller
bearings are widely used in industries such as automobiles, rolling mills, mining, metallurgy, and plastic machinery.Tapered roller
bearings are separable bearings. Both the inner and outer rings of the bearing have tapered raceways. This type of bearing is divided
into single row, double row and 4 row tapered roller bearings according to the number of rows installed.Tapered roller bearings are
widely used in industries such as automobiles, rolling mills, mining, metallurgy, and plastic machinery.
A wide range of applications:
• agriculture and forestry equipment
• automotive and industrial gearboxes
• automotive and truck electric components, such as alternators
• electric motors
• fluid machinery
• material handling
• power tools and household appliances
• textile machinery
• two Wheeler.
Our Bearing Advantage:
1.Free Sample bearing
2.ISO Standard
3.Bearing Small order accepted
4.In Stock bearing
5.OEM bearing service
6.Professional:16 years manufacture bearing
7.Customized bearing, Customer’s bearing drawing or samples accepted
8.Competitive price bearing
9.TT Payment or Western Union or Trade Assurance Order
| Product Name | Taper roller bearing 30334 30336 30334JR 30336JR |
| Brand Name | KOYO |
| Seals Type | OPEN |
| Material | Chrome Steel ,Stainless steel,Ceramic,Nylon |
| Clearance | C0,C2,C3,C4,C5 |
| Precision Grade | P0,P6,P5,P4,P2(ABEC1, ABEC3, ABEC5, ABEC7, ABEC9) |
| Greese | SRL ,PS2, Alvania R12 ,etc |
| Number of Row | Single Row |
| Certifications | ISO 9001 |
| Package | Box,Carton,Wooden Box,Plastic Tube or Per buyers requirement . |
| MOQ | 1PCS |
| Serice | OEM |
| Sample | Available |
| Payment Term | TT or Western Union |
| Port | HangZhou/HangZhou/ZheJiang |
PRODUCT DISPLAY
1. What is your Before-sales Service ?
1.Offer bearing related consultation about technology and application;
2.Help customers about bearing choice, clearance configuration, products’ life and reliability analysis;
3.Offer highly cost-effective and complete solution program according to site conditions;
4.Offer localized program on introduced equipment to save running cost
5.Design and develop non-standard bearing to support customers’ technology innovation.
2. What is your After-sales Service ?
1.Offer training about bearing installation and maintenance;
2.Offer guidance about bearing installation, adjustment and testing at site;
3.Help customers with trouble diagnosis and failure analysis;
4.Visit customers regularly and feedback their rational suggestions and requirements to company.
If you want to know more details, please contact us.
Worm Gear Motors
Worm gear motors are often preferred for quieter operation because of the smooth sliding motion of the worm shaft. Unlike gear motors with teeth, which may click as the worm turns, worm gear motors can be installed in a quiet area. In this article, we will talk about the CZPT whirling process and the various types of worms available. We’ll also discuss the benefits of worm gear motors and worm wheel.
worm gear
In the case of a worm gear, the axial pitch of the ring pinion of the corresponding revolving worm is equal to the circular pitch of the mating revolving pinion of the worm gear. A worm with 1 start is known as a worm with a lead. This leads to a smaller worm wheel. Worms can work in tight spaces because of their small profile.
Generally, a worm gear has high efficiency, but there are a few disadvantages. Worm gears are not recommended for high-heat applications because of their high level of rubbing. A full-fluid lubricant film and the low wear level of the gear reduce friction and wear. Worm gears also have a lower wear rate than a standard gear. The worm shaft and worm gear is also more efficient than a standard gear.
The worm gear shaft is cradled within a self-aligning bearing block that is attached to the gearbox casing. The eccentric housing has radial bearings on both ends, enabling it to engage with the worm gear wheel. The drive is transferred to the worm gear shaft through bevel gears 13A, 1 fixed at the ends of the worm gear shaft and the other in the center of the cross-shaft.
worm wheel
In a worm gearbox, the pinion or worm gear is centered between a geared cylinder and a worm shaft. The worm gear shaft is supported at either end by a radial thrust bearing. A gearbox’s cross-shaft is fixed to a suitable drive means and pivotally attached to the worm wheel. The input drive is transferred to the worm gear shaft 10 through bevel gears 13A, 1 of which is fixed to the end of the worm gear shaft and the other at the centre of the cross-shaft.
Worms and worm wheels are available in several materials. The worm wheel is made of bronze alloy, aluminum, or steel. Aluminum bronze worm wheels are a good choice for high-speed applications. Cast iron worm wheels are cheap and suitable for light loads. MC nylon worm wheels are highly wear-resistant and machinable. Aluminum bronze worm wheels are available and are good for applications with severe wear conditions.
When designing a worm wheel, it is vital to determine the correct lubricant for the worm shaft and a corresponding worm wheel. A suitable lubricant should have a kinematic viscosity of 300 mm2/s and be used for worm wheel sleeve bearings. The worm wheel and worm shaft should be properly lubricated to ensure their longevity.
Multi-start worms
A multi-start worm gear screw jack combines the benefits of multiple starts with linear output speeds. The multi-start worm shaft reduces the effects of single start worms and large ratio gears. Both types of worm gears have a reversible worm that can be reversed or stopped by hand, depending on the application. The worm gear’s self-locking ability depends on the lead angle, pressure angle, and friction coefficient.
A single-start worm has a single thread running the length of its shaft. The worm advances 1 tooth per revolution. A multi-start worm has multiple threads in each of its threads. The gear reduction on a multi-start worm is equal to the number of teeth on the gear minus the number of starts on the worm shaft. In general, a multi-start worm has 2 or 3 threads.
Worm gears can be quieter than other types of gears because the worm shaft glides rather than clicking. This makes them an excellent choice for applications where noise is a concern. Worm gears can be made of softer material, making them more noise-tolerant. In addition, they can withstand shock loads. Compared to gears with toothed teeth, worm gears have a lower noise and vibration rate.
CZPT whirling process
The CZPT whirling process for worm shafts raises the bar for precision gear machining in small to medium production volumes. The CZPT whirling process reduces thread rolling, increases worm quality, and offers reduced cycle times. The CZPT LWN-90 whirling machine features a steel bed, programmable force tailstock, and five-axis interpolation for increased accuracy and quality.
Its 4,000-rpm, 5-kW whirling spindle produces worms and various types of screws. Its outer diameters are up to 2.5 inches, while its length is up to 20 inches. Its dry-cutting process uses a vortex tube to deliver chilled compressed air to the cutting point. Oil is also added to the mixture. The worm shafts produced are free of undercuts, reducing the amount of machining required.
Induction hardening is a process that takes advantage of the whirling process. The induction hardening process utilizes alternating current (AC) to cause eddy currents in metallic objects. The higher the frequency, the higher the surface temperature. The electrical frequency is monitored through sensors to prevent overheating. Induction heating is programmable so that only certain parts of the worm shaft will harden.
Common tangent at an arbitrary point on both surfaces of the worm wheel
A worm gear consists of 2 helical segments with a helix angle equal to 90 degrees. This shape allows the worm to rotate with more than 1 tooth per rotation. A worm’s helix angle is usually close to 90 degrees and the body length is fairly long in the axial direction. A worm gear with a lead angle g has similar properties as a screw gear with a helix angle of 90 degrees.
The axial cross section of a worm gear is not conventionally trapezoidal. Instead, the linear part of the oblique side is replaced by cycloid curves. These curves have a common tangent near the pitch line. The worm wheel is then formed by gear cutting, resulting in a gear with 2 meshing surfaces. This worm gear can rotate at high speeds and still operate quietly.
A worm wheel with a cycloid pitch is a more efficient worm gear. It reduces friction between the worm and the gear, resulting in greater durability, improved operating efficiency, and reduced noise. This pitch line also helps the worm wheel engage more evenly and smoothly. Moreover, it prevents interference with their appearance. It also makes worm wheel and gear engagement smoother.
Calculation of worm shaft deflection
There are several methods for calculating worm shaft deflection, and each method has its own set of disadvantages. These commonly used methods provide good approximations but are inadequate for determining the actual worm shaft deflection. For example, these methods do not account for the geometric modifications to the worm, such as its helical winding of teeth. Furthermore, they overestimate the stiffening effect of the gearing. Hence, efficient thin worm shaft designs require other approaches.
Fortunately, several methods exist to determine the maximum worm shaft deflection. These methods use the finite element method, and include boundary conditions and parameter calculations. Here, we look at a couple of methods. The first method, DIN 3996, calculates the maximum worm shaft deflection based on the test results, while the second one, AGMA 6022, uses the root diameter of the worm as the equivalent bending diameter.
The second method focuses on the basic parameters of worm gearing. We’ll take a closer look at each. We’ll examine worm gearing teeth and the geometric factors that influence them. Commonly, the range of worm gearing teeth is 1 to four, but it can be as large as twelve. Choosing the teeth should depend on optimization requirements, including efficiency and weight. For example, if a worm gearing needs to be smaller than the previous model, then a small number of teeth will suffice.
China supplier Machine Tool Spindle Machine Gas Turbine Ball Bearing 6010 6012 6014 6016 RS Zz CZPT Deep Groove Ball Bearing 6012zz with Hot selling
Product Description
Product Description
| Product Name | Deep Groove Ball Bearings | |
| Brand Name | NMN | |
| Material | Chrome Steel GCr15 Stainless Steel Ceramic Nylon | |
| Cage | Steel Brass Nylon | |
| Weight(Kg) | 0.385 | |
| Bearing Clearance | C0 C2 C3 C4 C5 | |
| Seals Type | Z 2Z 2RS Znr 2RS1 2rsh 2rsl 2znr | |
| Precision Grade | P0 P6 P5 P4 P2 | |
| Vibration | V1 V2 V3 V4 | |
| Quality | ABEC1, 3, 5, 7,9 | |
| Load Rating(kN) | Cr | 29.5 |
| Cor | 23.2 | |
| Limiting Speed | Grease | 5000 |
| Oil | 6300 | |
| Serice | OEM | |
| Sample | Available | |
| Port | HangZhou/ZheJiang | |
Product Details
Single row deep groove ball bearings are used in a wide variety of applications, they are simple in design, non-separable, suitable for high speeds and are robust in operation, and need little maintenance. Deep raceway grooves and the close conformity between the raceway grooves and the balls enable deep groove ball bearings to accommodate axial loads in both directions, in addition to radial loads.
6012 bearing has the advantages of low noise, low friction and high speed, and is equipped with sealing cover, grease, etc., to extend the life of the product.
We provide OEM, ODM and other services, and provide you with relevant consulting information to help you with bearing selection, clearance configuration, product life and reliability analysis. We offer localized shipping solutions to save your shipping costs.
We can provide free samples, can accept custom LOGO or drawings, can design packaging according to requirements.
Bearing Models
| Number | Specifiction | Load Rating (KN) | Limiting Speed (r/min) | Weight(Kg/pc) | |||||
| d(mm) | D(mm) | B(mm) | r(mm) | Cr | Cor | Grease | Oil | ||
| 604 | 4 | 12 | 4 | 0.2 | 0.9 | 0.36 | 43000 | 51000 | 0.002 |
| 605 | 5 | 14 | 5 | 0.2 | 1.33 | 0.505 | 39000 | 46000 | 0.0035 |
| 606 | 6 | 17 | 6 | 0.3 | 2.19 | 0.865 | 30000 | 38000 | 0.006 |
| 607 | 7 | 19 | 6 | 0.3 | 2.24 | 0.91 | 28000 | 3600 | 0.008 |
| 608 | 8 | 22 | 7 | 0.3 | 3.35 | 1.4 | 26000 | 34000 | 0.012 |
| 609 | 9 | 24 | 7 | 0.3 | 3.4 | 1.45 | 22000 | 30000 | 0.014 |
| 6000 | 10 | 26 | 8 | 0.3 | 4.55 | 1.96 | 20000 | 28000 | 0.019 |
| 6001 | 1 | 28 | 8 | 0.3 | 5.1 | 2.39 | 19000 | 26000 | 0.571 |
| 6002 | 15 | 32 | 9 | 0.3 | 5.6 | 2.84 | 18000 | 24000 | 0.03 |
| 6003 | 17 | 35 | 10 | 0.3 | 6.8 | 3.35 | 17000 | 22000 | 0.039 |
| 6004 | 20 | 42 | 12 | 0.6 | 9. | 5.05 | 1000 | 19000 | 0.069 |
| 6005 | 25 | 47 | 12 | 0.6 | 10.1 | 5.85 | 13000 | 17000 | 0.08 |
| 6006 | 30 | 55 | 13 | 1.0 | 13.2 | 8.3 | 12000 | 15000 | 0.116 |
| 6007 | 35 | 62 | 14 | 1.0 | 16 | 10.3 | 10000 | 13000 | 0.155 |
| 6008 | 40 | 8 | 15 | 1.0 | 16.8 | 11.5 | 8000 | 11000 | 0.185 |
| 6009 | 45 | 5 | 16 | 1.0 | 21 | 15.1 | 7200 | 9000 | 0.231 |
| 6571 | 50 | 80 | 16 | 1.0 | 21.8 | 16.6 | 6400 | 7800 | 0.25 |
| 6011 | 55 | 90 | 18 | 1.1 | 28.3 | 21.2 | 5700 | 7000 | 0.362 |
| 6012 | 60 | 95 | 18 | 1.1 | 29.5 | 23.2 | 5000 | 6300 | 0.385 |
| 6013 | 65 | 100 | 18 | 1.1 | 31.9 | 25 | 4800 | 6100 | 0.44 |
| 6014 | 70 | 110 | 20 | 1.1 | 39.7 | 31 | 4600 | 5800 | 0.6 |
| 6015 | 75 | 115 | 20 | 1.1 | 41.6 | 33.5 | 4400 | 5600 | 0.64 |
| 6016 | 80 | 125 | 22 | 1.1 | 47.5 | 40 | 4300 | 5500 | 0.854 |
| 6017 | 85 | 130 | 22 | 1.1 | 49.5 | 43 | 200 | 5300 | 0.89 |
| 6018 | 90 | 140 | 24 | 1.5 | 58 | 49.5 | 4000 | 5100 | 1.02 |
| 624 | 4 | 13 | 5 | 0.2 | 1.31 | 0.49 | 36000 | 45000 | 0.0032 |
| 625 | 5 | 16 | 5 | 0.3 | 1.76 | 0.68 | 32000 | 40000 | 0.0048 |
| 626 | 6 | 19 | 6 | 0.3 | 2.34 | 0.885 | 28000 | 36000 | 0.0081 |
| 627 | 7 | 22 | 7 | 0.3 | 3.35 | 1.40 | 26000 | 34000 | 0.013 |
| 628 | 8 | 24 | 8 | 0.3 | 4.00 | 1.59 | 24000 | 32000 | 0.017 |
| 629 | 9 | 26 | 8 | 0.3 | 4.55 | 1.96 | 22000 | 40000 | 0.0048 |
Packaging & Shipping
·Plastic rolling packing + Plastic bag + Paper carton
·Single Box + Plastic rolling packing + Plastic bag + Paper carton+pallet
·According to customer requirement
Applications
About Us
ZheJiang CZPT Bearing Group is a professional bearing manufacturer and exporter in China. We have been engaged in bearing industry for 20 years. Our company is specialized in producing Deep Groove Ball Bearings, Tapered Roller Bearings, Spherical Roller Bearings and Special Bearings in accordance with Customers’ designs.Our bearings has been widely applied into agricultural equipments, home appliances, power equipments, machine tools, automotives and engineering machinery, etc.
Our production is strictly executed with ISO9001 and ISO14001. Our products are mainly exported to Singapore, South Kora, Vietnam, Thailand, Turkey, Pakistan, Australia, Polan, France, UK, South America, USA, South Africa and other countries and regions of the world, with great public praise of high quality and reasonable price.
Company Profile
FAQ
1.Q:Could you supply free sample of bearing for our test?
A:Yes. Please afford the express fee and we will send you the sample within your first order.
2.Q:Sample time?
A:Within 3-4 days.
3.Q:Are you a factory or a Trade Company for Bearing ?
A:We are the factory.
4.Q:Whether you could make your products by our color?
A:Yes, The color of products can be customized if you can meet our MOQ.
5.Q:Could you accept OEM and customize?
A:Yes, OEM and ODM are accepted and we can customize for you according to sample or drawing.
6.Q:Do you have stocks?
A:Yes, most of the bearings showing on alibaba are in stock,especialy big bearings.
We sincerely hope we can build a long term relationship with all the clients and we also have great confidence in cooperating with every potential customer by most premium service and competitive price.
Welcome your inquiry and welcome your visit.
What Are Screw Shaft Threads?
A screw shaft is a threaded part used to fasten other components. The threads on a screw shaft are often described by their Coefficient of Friction, which describes how much friction is present between the mating surfaces. This article discusses these characteristics as well as the Material and Helix angle. You’ll have a better understanding of your screw shaft’s threads after reading this article. Here are some examples. Once you understand these details, you’ll be able to select the best screw nut for your needs.
Coefficient of friction between the mating surfaces of a nut and a screw shaft
There are 2 types of friction coefficients. Dynamic friction and static friction. The latter refers to the amount of friction a nut has to resist an opposing motion. In addition to the material strength, a higher coefficient of friction can cause stick-slip. This can lead to intermittent running behavior and loud squeaking. Stick-slip may lead to a malfunctioning plain bearing. Rough shafts can be used to improve this condition.
The 2 types of friction coefficients are related to the applied force. When applying force, the applied force must equal the nut’s pitch diameter. When the screw shaft is tightened, the force may be removed. In the case of a loosening clamp, the applied force is smaller than the bolt’s pitch diameter. Therefore, the higher the property class of the bolt, the lower the coefficient of friction.
In most cases, the screwface coefficient of friction is lower than the nut face. This is because of zinc plating on the joint surface. Moreover, power screws are commonly used in the aerospace industry. Whether or not they are power screws, they are typically made of carbon steel, alloy steel, or stainless steel. They are often used in conjunction with bronze or plastic nuts, which are preferred in higher-duty applications. These screws often require no holding brakes and are extremely easy to use in many applications.
The coefficient of friction between the mating surfaces of t-screws is highly dependent on the material of the screw and the nut. For example, screws with internal lubricated plastic nuts use bearing-grade bronze nuts. These nuts are usually used on carbon steel screws, but can be used with stainless steel screws. In addition to this, they are easy to clean.
Helix angle
In most applications, the helix angle of a screw shaft is an important factor for torque calculation. There are 2 types of helix angle: right and left hand. The right hand screw is usually smaller than the left hand one. The left hand screw is larger than the right hand screw. However, there are some exceptions to the rule. A left hand screw may have a greater helix angle than a right hand screw.
A screw’s helix angle is the angle formed by the helix and the axial line. Although the helix angle is not usually changed, it can have a significant effect on the processing of the screw and the amount of material conveyed. These changes are more common in 2 stage and special mixing screws, and metering screws. These measurements are crucial for determining the helix angle. In most cases, the lead angle is the correct angle when the screw shaft has the right helix angle.
High helix screws have large leads, sometimes up to 6 times the screw diameter. These screws reduce the screw diameter, mass, and inertia, allowing for higher speed and precision. High helix screws are also low-rotation, so they minimize vibrations and audible noises. But the right helix angle is important in any application. You must carefully choose the right type of screw for the job at hand.
If you choose a screw gear that has a helix angle other than parallel, you should select a thrust bearing with a correspondingly large center distance. In the case of a screw gear, a 45-degree helix angle is most common. A helix angle greater than zero degrees is also acceptable. Mixing up helix angles is beneficial because it allows for a variety of center distances and unique applications.
Thread angle
The thread angle of a screw shaft is measured from the base of the head of the screw to the top of the screw’s thread. In America, the standard screw thread angle is 60 degrees. The standard thread angle was not widely adopted until the early twentieth century. A committee was established by the Franklin Institute in 1864 to study screw threads. The committee recommended the Sellers thread, which was modified into the United States Standard Thread. The standardized thread was adopted by the United States Navy in 1868 and was recommended for construction by the Master Car Builders’ Association in 1871.
Generally speaking, the major diameter of a screw’s threads is the outside diameter. The major diameter of a nut is not directly measured, but can be determined with go/no-go gauges. It is necessary to understand the major and minor diameters in relation to each other in order to determine a screw’s thread angle. Once this is known, the next step is to determine how much of a pitch is necessary to ensure a screw’s proper function.
Helix angle and thread angle are 2 different types of angles that affect screw efficiency. For a lead screw, the helix angle is the angle between the helix of the thread and the line perpendicular to the axis of rotation. A lead screw has a greater helix angle than a helical one, but has higher frictional losses. A high-quality lead screw requires a higher torque to rotate. Thread angle and lead angle are complementary angles, but each screw has its own specific advantages.
Screw pitch and TPI have little to do with tolerances, craftsmanship, quality, or cost, but rather the size of a screw’s thread relative to its diameter. Compared to a standard screw, the fine and coarse threads are easier to tighten. The coarser thread is deeper, which results in lower torques. If a screw fails because of torsional shear, it is likely to be a result of a small minor diameter.
Material
Screws have a variety of different sizes, shapes, and materials. They are typically machined on CNC machines and lathes. Each type is used for different purposes. The size and material of a screw shaft are influenced by how it will be used. The following sections give an overview of the main types of screw shafts. Each 1 is designed to perform a specific function. If you have questions about a specific type, contact your local machine shop.
Lead screws are cheaper than ball screws and are used in light-duty, intermittent applications. Lead screws, however, have poor efficiency and are not recommended for continuous power transmission. But, they are effective in vertical applications and are more compact. Lead screws are typically used as a kinematic pair with a ball screw. Some types of lead screws also have self-locking properties. Because they have a low coefficient of friction, they have a compact design and very few parts.
Screws are made of a variety of metals and alloys. Steel is an economical and durable material, but there are also alloy steel and stainless steel types. Bronze nuts are the most common and are often used in higher-duty applications. Plastic nuts provide low-friction, which helps reduce the drive torques. Stainless steel screws are also used in high-performance applications, and may be made of titanium. The materials used to create screw shafts vary, but they all have their specific functions.
Screws are used in a wide range of applications, from industrial and consumer products to transportation equipment. They are used in many different industries, and the materials they’re made of can determine their life. The life of a screw depends on the load that it bears, the design of its internal structure, lubrication, and machining processes. When choosing screw assemblies, look for a screw made from the highest quality steels possible. Usually, the materials are very clean, so they’re a great choice for a screw. However, the presence of imperfections may cause a normal fatigue failure.
Self-locking features
Screws are known to be self-locking by nature. The mechanism for this feature is based on several factors, such as the pitch angle of the threads, material pairing, lubrication, and heating. This feature is only possible if the shaft is subjected to conditions that are not likely to cause the threads to loosen on their own. The self-locking ability of a screw depends on several factors, including the pitch angle of the thread flank and the coefficient of sliding friction between the 2 materials.
One of the most common uses of screws is in a screw top container lid, corkscrew, threaded pipe joint, vise, C-clamp, and screw jack. Other applications of screw shafts include transferring power, but these are often intermittent and low-power operations. Screws are also used to move material in Archimedes’ screw, auger earth drill, screw conveyor, and micrometer.
A common self-locking feature for a screw is the presence of a lead screw. A screw with a low PV value is safe to operate, but a screw with high PV will need a lower rotation speed. Another example is a self-locking screw that does not require lubrication. The PV value is also dependent on the material of the screw’s construction, as well as its lubrication conditions. Finally, a screw’s end fixity – the way the screw is supported – affects the performance and efficiency of a screw.
Lead screws are less expensive and easier to manufacture. They are a good choice for light-weight and intermittent applications. These screws also have self-locking capabilities. They can be self-tightened and require less torque for driving than other types. The advantage of lead screws is their small size and minimal number of parts. They are highly efficient in vertical and intermittent applications. They are not as accurate as lead screws and often have backlash, which is caused by insufficient threads.