Product Description
SPORTRAK 295/80R22.5 TBR Tire Radial Truck Tire
https:// /sendInquiry/prod_VBvmXpbOLCRY_CbMJwuXArtIF.html?plant=en&from=shrom&type=cs&style=2&page=p_detail
| 1.Product display |
1. Our Truck Tyre advantages
• Complete certifications show that our tyre quality has reached international standards:
ISO , CCC , DOT , ECE , REACH , EU-LABEL , GCC , SONCAP , SNI , SGS etc.
• Over 10 years’ experience, we are the expert in tyre filed and our brands have gained a high Market awareness.
2. TBR factory with Japan Technology
• Strict quality control from raw material to technology
• Steel Wire : BEKAERT
• Carbon Black: CABOT
• Equipment: Imported from U.S., Germany etc.
· USA spindle room of RJS;
· Cutting machine from Germany KARL EUGEN FISCHER;
· X-ray detection machine from Germany Koeman & YXLON;
· USA Atomic absorption spectrum instrument of THERMO;
· Unique 5 meters drum giant fetal endurance testing machine in China
• Technology from YOKOHAMA
4. Comprehensive Truck Tyre Sizes
Tube Tyres/Tires:
8.25R16 8.25R20 900R20 1000R20 1100R20 1200R20 1200R24 etc.
Tubeless Tyres/Tires:
11R22.5 12R22.5 13R22.5 295/80R22.5 315/80R22.5 385/65R22.5 etc.
5. World-class truck tyre supplier, we are your best choice
Relying on science and technology strength and keeping in step with world first class level. We will constantly research and develop new products. Meanwhile, we serve clients with high quality products and superior service and endeavor to leading the tire industry.
8. Our Warranty
· TBR: 100,000 kilometers guaranteed
In Conclusion:
1. We are TBR , PCR, OTR tyres factory with over 10 years experience and knowledge.
2. ISO , CCC , DOT , ECE , S-MARK , EU-LABEL , REACH , GCC , SNI , SONCAP, etc.
3. Production capacity: TBR (3,600,000 sets) / PCR (5,000,000 sets).
4. Truck tyre sizes: 385/65R22.5 / 315/80R22.5 / 315/70R22.5 / 295/80R22.5 / 295/75R22.5 / 285/70R19.5 / 235/75R17.5 / 13R22.5 / 11R24.5 / 11R24.5 / 1200R24 / 1200R20 / 1100R20 / 1000R20 / 825R16 / 750R16 etc.
If you have any question or inquiry, please contact us by phone or leaving your message below.
Our sales team will get back to you within 12hours.
| SIZE | PLY RATE | DEPTH(mm) | STHangZhouRD RIMS | INNER TUBE | LOAD INDEX |
| 7.00R16LT | 12PR | 10.5 | 5.50F | TT | 115/110 |
| 14PR | 118/114 | ||||
| 7.50R16LT | 12PR | 13.5 | 6.00G | TT | 120/116 |
| 14PR | 122/118 | ||||
| 8.25R16LT | 14PR | 14.5 | 6.50H | TT | 126/122 |
| 16PR | 128/124 | ||||
| 8.25R20 | 14PR | 15 | 6.5 | TT | 136/134 |
| 16PR | 139/137 | ||||
| 9.00R20 | 14PR | 15.5 | 7 | TT | 141/139 |
| 16PR | 144/142 | ||||
| 10.00R20 | 16PR | 16 | 7.5 | TT | 146/143 |
| 18PR | 149/146 | ||||
| 11.00R20 | 16PR | 17 | 8 | TT | 150/147 |
| 18PR | 152/149 | ||||
| 12.00R20 | 18PR | 17 | 8.5 | TT | 154/151 |
| 20PR | 156/153 | ||||
| 11R22.5 | 14PR | 17.5 | 8.25 | TL | 144/142 |
| 16PR | 146/143 | ||||
| 12.00R24 | 18PR | 16 | 8.5 | TT | 158/155 |
| 20PR | 160/157 | ||||
| 13R22.5 | 18PR | 16.5 | 9.75 | TL | 154/151 |
| 315/80R22.5 | 16PR | 17.5 | 9 | TL | 151/148 |
| 18PR | 154/151 | ||||
| 20PR | 156/150 |
| 2.Factory Profile |
Sportrak Tire Group(S.T.G) is an integrated corporation
specializing in developing, manufacturing & selling tires;ZheJiang Energy Group is our headquarter which is among the world TOP 500.
To deal with the situation of limited coal resources that used to be our main producing,now we are prioritizing the development of rubber industry with continued investment and acquisition of 2 large scale tire factories, 1 is a all-steel truck tire factory
(referred to as TBR factory) whose annual output is 3.6 million sets, the other is a semi-steel tire factory (referred to as PCR factory) with 20 million sets annual output. Meanwhile we have invested and built a rubber processing plant in Thailand with an annual output of 200,000 tons so as to secure the stable supply of the rubber raw material and its quality.
With the support of great power and technology, our TBR factory has built the national tire laboratory certified by CNAS and also owned the world advanced and China leading disposable mixing method, which has obtained the national technology award. We also have the advanced VMI molding machine and the professional producing and testing equipments which are imported from Europe and America, moreover we’ve adopted tZheJiang o technology in producing and processing.
Each tire has to go through hundreds of processing procedures before completed and put into the market since the very beginning of raw materials. Currently we have passed the TS16949, DOT, SONCAP ,E-Mark, INMETRO,GCC ,SNI and the ISO9001 quality system certification.The whole set of the tire technology we introduced and adopted is top of Europe; the main members of the technical team have working experience in well-known tire companies both at home and abroad and they are professional in construction design, formulation design and factory management. SPORTRAK tire group takes SPORTRAK as leading brand to explore the domestic and foreign markets and we are engaged in production of green, environmental-protective and energy-saving tires. So far the product series range from entire series to multi-pattern and economical to high-performance, which accounted for 40% and 90% of our products are for export.
| 4.Exhibition |
| 5.Recommend Products |
| 6.Packing&Delivery |
| 7.FAQ |
1. How to ship?
1). FOB,CIF terms, we will effect shipment and furnish the master bill of lading issued by shipping line.
2). FOB items, buyer should nominated shipping line or shipping agency in China.
3). Shipped by train , we will discuss with buyer to get agreement on details.
2. How about the quality?
1). Best quality tires.
2). Best Parterns: Rubber from Malaysia & Thailand top-quality Natural and synthetic rubber.
3. How about the delivery?
If the products you need are all stock available, we will arrange shipment within 3-5 days, once receiving your down payment. If the products you need is out of stock, we will arrange production asap, normally, the shipment will be effected within 15-30 days.
4. How about the warranty?
Any tire with a complete serial number is covered against defects in workmanship and material for 2 YEARS from the date of purchase. After that time, the warranty is terminated.
Notice: The tire age calculated from the date of purchase, If the proof of purchase is not available, the tire date of manufacture will be applied.
| 8.Contact |
How to Determine the Quality of a Worm Shaft
There are many advantages of a worm shaft. It is easier to manufacture, as it does not require manual straightening. Among these benefits are ease of maintenance, reduced cost, and ease of installation. In addition, this type of shaft is much less prone to damage due to manual straightening. This article will discuss the different factors that determine the quality of a worm shaft. It also discusses the Dedendum, Root diameter, and Wear load capacity.
Root diameter
There are various options when choosing worm gearing. The selection depends on the transmission used and production possibilities. The basic profile parameters of worm gearing are described in the professional and firm literature and are used in geometry calculations. The selected variant is then transferred to the main calculation. However, you must take into account the strength parameters and the gear ratios for the calculation to be accurate. Here are some tips to choose the right worm gearing.
The root diameter of a worm gear is measured from the center of its pitch. Its pitch diameter is a standardized value that is determined from its pressure angle at the point of zero gearing correction. The worm gear pitch diameter is calculated by adding the worm’s dimension to the nominal center distance. When defining the worm gear pitch, you have to keep in mind that the root diameter of the worm shaft must be smaller than the pitch diameter.
Worm gearing requires teeth to evenly distribute the wear. For this, the tooth side of the worm must be convex in the normal and centre-line sections. The shape of the teeth, referred to as the evolvent profile, resembles a helical gear. Usually, the root diameter of a worm gear is more than a quarter inch. However, a half-inch difference is acceptable.
Another way to calculate the gearing efficiency of a worm shaft is by looking at the worm’s sacrificial wheel. A sacrificial wheel is softer than the worm, so most wear and tear will occur on the wheel. Oil analysis reports of worm gearing units almost always show a high copper and iron ratio, suggesting that the worm’s gearing is ineffective.
Dedendum
The dedendum of a worm shaft refers to the radial length of its tooth. The pitch diameter and the minor diameter determine the dedendum. In an imperial system, the pitch diameter is referred to as the diametral pitch. Other parameters include the face width and fillet radius. Face width describes the width of the gear wheel without hub projections. Fillet radius measures the radius on the tip of the cutter and forms a trochoidal curve.
The diameter of a hub is measured at its outer diameter, and its projection is the distance the hub extends beyond the gear face. There are 2 types of addendum teeth, 1 with short-addendum teeth and the other with long-addendum teeth. The gears themselves have a keyway (a groove machined into the shaft and bore). A key is fitted into the keyway, which fits into the shaft.
Worm gears transmit motion from 2 shafts that are not parallel, and have a line-toothed design. The pitch circle has 2 or more arcs, and the worm and sprocket are supported by anti-friction roller bearings. Worm gears have high friction and wear on the tooth teeth and restraining surfaces. If you’d like to know more about worm gears, take a look at the definitions below.
CZPT’s whirling process
Whirling process is a modern manufacturing method that is replacing thread milling and hobbing processes. It has been able to reduce manufacturing costs and lead times while producing precision gear worms. In addition, it has reduced the need for thread grinding and surface roughness. It also reduces thread rolling. Here’s more on how CZPT whirling process works.
The whirling process on the worm shaft can be used for producing a variety of screw types and worms. They can produce screw shafts with outer diameters of up to 2.5 inches. Unlike other whirling processes, the worm shaft is sacrificial, and the process does not require machining. A vortex tube is used to deliver chilled compressed air to the cutting point. If needed, oil is also added to the mix.
Another method for hardening a worm shaft is called induction hardening. The process is a high-frequency electrical process that induces eddy currents in metallic objects. The higher the frequency, the more surface heat it generates. With induction heating, you can program the heating process to harden only specific areas of the worm shaft. The length of the worm shaft is usually shortened.
Worm gears offer numerous advantages over standard gear sets. If used correctly, they are reliable and highly efficient. By following proper setup guidelines and lubrication guidelines, worm gears can deliver the same reliable service as any other type of gear set. The article by Ray Thibault, a mechanical engineer at the University of Virginia, is an excellent guide to lubrication on worm gears.
Wear load capacity
The wear load capacity of a worm shaft is a key parameter when determining the efficiency of a gearbox. Worms can be made with different gear ratios, and the design of the worm shaft should reflect this. To determine the wear load capacity of a worm, you can check its geometry. Worms are usually made with teeth ranging from 1 to 4 and up to twelve. Choosing the right number of teeth depends on several factors, including the optimisation requirements, such as efficiency, weight, and centre-line distance.
Worm gear tooth forces increase with increased power density, causing the worm shaft to deflect more. This reduces its wear load capacity, lowers efficiency, and increases NVH behavior. Advances in lubricants and bronze materials, combined with better manufacturing quality, have enabled the continuous increase in power density. Those 3 factors combined will determine the wear load capacity of your worm gear. It is critical to consider all 3 factors before choosing the right gear tooth profile.
The minimum number of gear teeth in a gear depends on the pressure angle at zero gearing correction. The worm diameter d1 is arbitrary and depends on a known module value, mx or mn. Worms and gears with different ratios can be interchanged. An involute helicoid ensures proper contact and shape, and provides higher accuracy and life. The involute helicoid worm is also a key component of a gear.
Worm gears are a form of ancient gear. A cylindrical worm engages with a toothed wheel to reduce rotational speed. Worm gears are also used as prime movers. If you’re looking for a gearbox, it may be a good option. If you’re considering a worm gear, be sure to check its load capacity and lubrication requirements.
NVH behavior
The NVH behavior of a worm shaft is determined using the finite element method. The simulation parameters are defined using the finite element method and experimental worm shafts are compared to the simulation results. The results show that a large deviation exists between the simulated and experimental values. In addition, the bending stiffness of the worm shaft is highly dependent on the geometry of the worm gear toothings. Hence, an adequate design for a worm gear toothing can help reduce the NVH (noise-vibration) behavior of the worm shaft.
To calculate the worm shaft’s NVH behavior, the main axes of moment of inertia are the diameter of the worm and the number of threads. This will influence the angle between the worm teeth and the effective distance of each tooth. The distance between the main axes of the worm shaft and the worm gear is the analytical equivalent bending diameter. The diameter of the worm gear is referred to as its effective diameter.
The increased power density of a worm gear results in increased forces acting on the corresponding worm gear tooth. This leads to a corresponding increase in deflection of the worm gear, which negatively affects its efficiency and wear load capacity. In addition, the increasing power density requires improved manufacturing quality. The continuous advancement in bronze materials and lubricants has also facilitated the continued increase in power density.
The toothing of the worm gears determines the worm shaft deflection. The bending stiffness of the worm gear toothing is also calculated by using a tooth-dependent bending stiffness. The deflection is then converted into a stiffness value by using the stiffness of the individual sections of the worm shaft. As shown in figure 5, a transverse section of a two-threaded worm is shown in the figure.
