Product Description

Product Description

Ball Bearings

Deep Groove Ball Bearings

Self Aligning Ball Bearings

Angular Contact Ball Bearings

Thrust Bearings

Applications
Electric motors
Elevators
Conveyor systems
Agriculture industry
Steering applications
Industrial pumps and drive cars
Pulp and paper industry
Industrial gearboxes
Trucks, trailers & buses

*Own Manufacturing Full Range*

P4 Spindle ABEC5/7 Precision Mini High Speed Angular Contact Bearing

Angular contact ball bearings that can receive a certain amount of axial load.
 About Item

BearingType	7005C/AC/B 7005C/AC/B Angular Contact Bearing	Size	25x47x12
Closure Type	ZZ/2RS/OPEN	Material	GCr15, Stainless steel and etc.
Outer Ring Shape	Flat	Accuracy	P0, P6, P5, P4, P2
Clearance	Normal, C2, C0, C3, C4, C5	Cage	Nylon, Brass and etc.
Application	Ideal for machine tools, feed screw mechanisms, ball screw support units, etc	Advantage	Engineered to meet your requirements
Packing	Industrial/Individual Packing	Marking	Neutral or Designated
Durable	GCr15 races offer high hardness and great wear resistance	Service	Together create special solutions for your business

Features: The straight line connecting the contact points between the ball and the inner and outer rings has an angle with respect to the radial direction.-Radial load and unidirectional axial load can be applied.-When a radial load acts, an axial component force is generated, so 2 are generally used facing each other.

Product Parameters

Suffix:
A     : 30 degree contact angel
AC   : 25 degree contact angel
B     : 40 degree contact angel
C     : 15 degree contact angel
TN  : Nylon cage
M   : Brass cage

 

Bearing No.			dxDxB (mm)			Weight(kg)
7005C	7005AC	7005B	25	47	12	0.093

More Choices

Please note our catalogue of this series,do not hesitate let us know what we can do for you.

Single Row Angular Contact Ball Bearing
Bearing No.			dxDxB (mm)			Weight(kg)		Bearing No.			dxDxB (mm)			Weight(kg)
7000C	7000AC	7000B	10	26	8	0.018		7200C	7200AC	7200B	10	30	9	0.030
7001C	7001AC	7001B	12	28	8	0.571		7201C	7201AC	7201B	12	32	10	0.036
7002C	7002AC	7002B	15	32	9	0.571		7202C	7202AC	7202B	15	35	11	0.045
7003C	7003AC	7003B	17	35	10	0.035		7203C	7203AC	7203B	17	40	12	0.065
7004C	7004AC	7004B	20	42	12	0.080		7204C	7204AC	7204B	20	47	14	0.110
7005C	7005AC	7005B	25	47	12	0.093		7205C	7205AC	7205B	25	52	15	0.130
7006C	7006AC	7006B	30	55	13	0.135		7206C	7206AC	7206B	30	62	16	0.200
7007C	7007AC	7007B	35	62	14	0.180		7207C	7207AC	7207B	35	72	17	0.280
7008C	7008AC	7008B	40	68	15	0.222		7208C	7208AC	7208B	40	80	18	0.370
7009C	7009AC	7009B	45	75	16	0.282		7209C	7209AC	7209B	45	85	19	0.420
7571C	7571AC	7571B	50	80	16	0.306		7210C	7210AC	7210B	50	90	20	0.470
7011C	7011AC	7011B	55	90	18	0.447		7211C	7211AC	7211B	55	100	21	0.620
7012C	7012AC	7012B	60	95	18	0.478		7212C	7212AC	7212B	60	110	22	0.800
7013C	7013AC	7013B	65	100	18	0.509		7213C	7213AC	7213B	65	120	23	1.000
7014C	7014AC	7014B	70	110	20	0.705		7214C	7214AC	7214B	70	125	24	1.100
7015C	7015AC	7015B	75	115	20	0.745		7215C	7215AC	7215B	75	130	25	1.200
7016C	7016AC	7016B	80	125	22	0.994		7216C	7216AC	7216B	80	140	26	1.450
7017C	7017AC	7017B	85	130	22	1.040		7217C	7217AC	7217B	85	150	28	1.850
7018C	7018AC	7018B	90	140	24	1.350		7218C	7218AC	7218B	90	160	30	2.300
7019C	7019AC	7019B	95	145	24	1.410		7219C	7219AC	7219B	95	170	32	2.700
7571C	7571AC	7571B	100	150	24	1.470		7220C	7220AC	7220B	100	180	34	3.300
7571C	7571AC	7571B	10	30	9	1.620		7221C	7221AC	7221B	105	190	36	3.816
7571C	7571AC		110	170	28	2.160		7222C	7222AC	7222B	110	200	38	4.500
7571C	7571AC		120	180	28	3.110		7224C	7224AC	7224B	120	215	40	5.600
7026C	7026AC		130	200	33	3.910		7226C	7226AC	7226B	130	230	40	7.300
7571C	7571AC		140	210	33	4.200		7228C	7228AC	7228B	140	250	42	9.000
7030C	7030AC		150	225	35	5.000		7230C	7230AC	7230B	150	270	45	11.00
7032C	7032AC		160	240	38	5.440		7232C	7232AC	7232B	160	290	48	14.50
7034C	7034AC		170	260	42	8.270		7234C	7234AC	7234B	170	310	52	16.50
7036C	7036AC		180	280	46	10.900		7236C	7236AC	7236B	180	320	52	18.10
7038C	7038AC		190	290	46	11.200		7238C	7238AC	7238B	190	340	55	20.00
7040C	7040AC		200	310	51	14.900		7240C	7240AC	7240B	200	360	58	24.00
7044C	7044AC		220	340	56	16.200		7244C	7244AC	7244B	220	400	65	36.10

Company Profile

What We Do
Comprehensive product range:

– Bearings
– Oil seals, Transmission belt
– Chain and Sprocket
– Hub assembly & Wheel bearings
– Coupling, castings
– Linear motion

About Us
Focus on a variety of industries
Provide maintenance solutions
Optimize customer inventory and reduce cost

Vision
Continue to innovate through resource integration and business diversification to maintain uniqueness in the market

Mission
Provide comprehensive quality products and thoughtful customer service

Our Values
Behavior-based, service oriented, focused on results, and committed to continuous improvement
 

Advantage
1. Advanced Automatic Lines
2. Comprehensive Range
3. Premium Quality
4. Sustainability

Factory
Granville Industrial Co., Ltd.
HangZhou Granville Mechanical & Electrical Co., Ltd.
The advantage ball bearing factory located in the bearing manufacturing center – HangZhou, China. There are 2 plants, 1 specialized in manufacturing common grade ball bearings, another 1 professional in EMQ bearings with stablized Z3V3 quality. The factory takes her every effort in purchasing the most advanced bearing process equipments, NC automatic facilities are widely used in the factory and has becomes a bearing factory owning the most advanced process equipments in China. The Granville own ball bearing factory division manufacturing a whole range of radial deep groove ball bearings, open – shield – sealed – chrome steel, stainless steel available.

Product Offering:

Bore Size	3mm and up
Closures	Open, Non-contact metallic shields, Non-contact seals
Ring Material	52100 chrome steel 440C stainless steel 420C stainless steel
Seal Material	Nitrile, Polyacrylic, Viton
Retainer	Riveted steel, Crimped steel, Crowned steel, Crowned nylon
Precision Class	ABEC1, ABEC3, ABEC5, ABEC-7
Radial Clearance	C2, CO, C3, C4, C5
Heat stabilization	SO, S1, S2, S3

The Granville stablized high precision EMQ bearings in 10 series for below OE industries:
1 EM bearings for automobiles
2 EM bearings for air conditioners
3 EM bearings for industrial sewing machines
4 EM bearings for textile machines
5 Bearings for electric tools
6 EM bearings for general machinery
7 EM bearings for washers
8 EM bearings for vacuum cleaners
9 Bearings for bank note counters
10 EM bearings for cleanout machines

Workshop

Quality Warranty

Granville as a manufacturer of high quality products, guarantees compliance with the highest standards relative to the use of the best steel quality in the production process, the highest standards in the design of contact surfaces, as well as the most efficient packing and lubrication of parts. From material coming, quality control through all processes. Except interal test, goods to third party inspection if required. After the center of inspection and experiment being founded, effective methods of inspecting all kinds of raw materials are mastered and then the reliability of bearings is ensured. One of our main objectives is the continued improvement in the quality of our products and processes, in pursuit of which we obtained ISO certification 9001:2008 and TS16949. 

Advantage Manufacturing Processes and Quality Control:
01 Heat Treatment
02 Centerless Grinding Machine 11200 (most advanced)
03 Automatic Production Lines for Raceway
04 Automatic Production Lines for Raceway
05 Ultrasonic Cleaning of Rings
06 Automatic Assembly
07 Ultrasonic Cleaning of Bearings
08 Automatic Greasing, Seals Pressing
09 Measurement of Bearing Vibration (Acceleration)
10 Measurement of Bearing Vibration (Speed)
11 Laser Marking
12 Automatic Packing

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What Are Worm Gears and Worm Shafts?

If you’re looking for a fishing reel with a worm gear system, you’ve probably come across the term ‘worm gear’. But what are worm gears and worm shafts? And what are the advantages and disadvantages of worm gears? Let’s take a closer look! Read on to learn more about worm gears and shafts! Then you’ll be well on your way to purchasing a reel with a worm gear system.

worm gear reducers

Worm shaft reducers have a number of advantages over conventional gear reduction mechanisms. First, they’re highly efficient. While single stage worm reducers have a maximum reduction ratio of about 5 to 60, hypoid gears can typically go up to a maximum of 1 hundred and 20 times. A worm shaft reducer is only as efficient as the gearing it utilizes. This article will discuss some of the advantages of using a hypoid gear set, and how it can benefit your business.
To assemble a worm shaft reducer, first remove the flange from the motor. Then, remove the output bearing carrier and output gear assembly. Lastly, install the intermediate worm assembly through the bore opposite to the attachment housing. Once installed, you should carefully remove the bearing carrier and the gear assembly from the motor. Don’t forget to remove the oil seal from the housing and motor flange. During this process, you must use a small hammer to tap around the face of the plug near the outside diameter of the housing.
Worm gears are often used in reversing prevention systems. The backlash of a worm gear can increase with wear. However, a duplex worm gear was designed to address this problem. This type of gear requires a smaller backlash but is still highly precise. It uses different leads for the opposing tooth face, which continuously alters its tooth thickness. Worm gears can also be adjusted axially.

worm gears

There are a couple of different types of lubricants that are used in worm gears. The first, polyalkylene glycols, are used in cases where high temperature is not a concern. This type of lubricant does not contain any waxes, which makes it an excellent choice in low-temperature applications. However, these lubricants are not compatible with mineral oils or some types of paints and seals. Worm gears typically feature a steel worm and a brass wheel. The brass wheel is much easier to remodel than steel and is generally modeled as a sacrificial component.
The worm gear is most effective when it is used in small and compact applications. Worm gears can greatly increase torque or reduce speed, and they are often used where space is an issue. Worm gears are among the smoothest and quietest gear systems on the market, and their meshing effectiveness is excellent. However, the worm gear requires high-quality manufacturing to perform at its highest levels. If you’re considering a worm gear for a project, it’s important to make sure that you find a manufacturer with a long and high quality reputation.
The pitch diameters of both worm and pinion gears must match. The 2 worm cylinders in a worm wheel have the same pitch diameter. The worm wheel shaft has 2 pitch cylinders and 2 threads. They are similar in pitch diameter, but have different advancing angles. A self-locking worm gear, also known as a wormwheel, is usually self-locking. Moreover, self-locking worm gears are easy to install.

worm shafts

The deflection of worm shafts varies with toothing parameters. In addition to toothing length, worm gear size and pressure angle, worm gear size and number of helical threads are all influencing factors. These variations are modeled in the standard ISO/TS 14521 reference gear. This table shows the variations in each parameter. The ID indicates the worm shaft’s center distance. In addition, a new calculation method is presented for determining the equivalent bending diameter of the worm.
The deflection of worm shafts is investigated using a four-stage process. First, the finite element method is used to compute the deflection of a worm shaft. Then, the worm shaft is experimentally tested, comparing the results with the corresponding simulations. The final stage of the simulation is to consider the toothing geometry of 15 different worm gear toothings. The results of this step confirm the modeled results.
The lead on the right and left tooth surfaces of worms is the same. However, the lead can be varied along the worm shaft. This is called dual lead worm gear, and is used to eliminate play in the main worm gear of hobbing machines. The pitch diameters of worm modules are equal. The same principle applies to their pitch diameters. Generally, the lead angle increases as the number of threads decreases. Hence, the larger the lead angle, the less self-locking it becomes.

worm gears in fishing reels

Fishing reels usually include worm shafts as a part of the construction. Worm shafts in fishing reels allow for uniform worm winding. The worm shaft is attached to a bearing on the rear wall of the reel unit through a hole. The worm shaft’s front end is supported by a concave hole in the front of the reel unit. A conventional fishing reel may also have a worm shaft attached to the sidewall.
The gear support portion 29 supports the rear end of the pinion gear 12. It is a thick rib that protrudes from the lid portion 2 b. It is mounted on a bushing 14 b, which has a through hole through which the worm shaft 20 passes. This worm gear supports the worm. There are 2 types of worm gears available for fishing reels. The 2 types of worm gears may have different number of teeth or they may be the same.
Typical worm shafts are made of stainless steel. Stainless steel worm shafts are especially corrosion-resistant and durable. Worm shafts are used on spinning reels, spin-casting reels, and in many electrical tools. A worm shaft can be reversible, but it is not entirely reliable. There are numerous benefits of worm shafts in fishing reels. These fishing reels also feature a line winder or level winder.

worm gears in electrical tools

Worms have different tooth shapes that can help increase the load carrying capacity of a worm gear. Different tooth shapes can be used with circular or secondary curve cross sections. The pitch point of the cross section is the boundary for this type of mesh. The mesh can be either positive or negative depending on the desired torque. Worm teeth can also be inspected by measuring them over pins. In many cases, the lead thickness of a worm can be adjusted using a gear tooth caliper.
The worm shaft is fixed to the lower case section 8 via a rubber bush 13. The worm wheel 3 is attached to the joint shaft 12. The worm 2 is coaxially attached to the shaft end section 12a. This joint shaft connects to a swing arm and rotates the worm wheel 3.
The backlash of a worm gear may be increased if the worm is not mounted properly. To fix the problem, manufacturers have developed duplex worm gears, which are suitable for small backlash applications. Duplex worm gears utilize different leads on each tooth face for continuous change in tooth thickness. In this way, the center distance of the worm gear can be adjusted without changing the worm’s design.

worm gears in engines

Using worm shafts in engines has a few benefits. First of all, worm gears are quiet. The gear and worm face move in opposite directions so the energy transferred is linear. Worm gears are popular in applications where torque is important, such as elevators and lifts. Worm gears also have the advantage of being made from soft materials, making them easy to lubricate and to use in applications where noise is a concern.
Lubricants are necessary for worm gears. The viscosity of lubricants determines whether the worm is able to touch the gear or wheel. Common lubricants are ISO 680 and 460, but higher viscosity oil is not uncommon. It is essential to use the right lubricants for worm gears, since they cannot be lubricated indefinitely.
Worm gears are not recommended for engines due to their limited performance. The worm gear’s spiral motion causes a significant reduction in space, but this requires a high amount of lubrication. Worm gears are susceptible to breaking down because of the stress placed on them. Moreover, their limited speed can cause significant damage to the gearbox, so careful maintenance is essential. To make sure worm gears remain in top condition, you should inspect and clean them regularly.

Methods for manufacturing worm shafts

A novel approach to manufacturing worm shafts and gearboxes is provided by the methods of the present invention. Aspects of the technique involve manufacturing the worm shaft from a common worm shaft blank having a defined outer diameter and axial pitch. The worm shaft blank is then adapted to the desired gear ratio, resulting in a gearbox family with multiple gear ratios. The preferred method for manufacturing worm shafts and gearboxes is outlined below.
A worm shaft assembly process may involve establishing an axial pitch for a given frame size and reduction ratio. A single worm shaft blank typically has an outer diameter of 100 millimeters, which is the measurement of the worm gear set’s center distance. Upon completion of the assembly process, the worm shaft has the desired axial pitch. Methods for manufacturing worm shafts include the following:
For the design of the worm gear, a high degree of conformity is required. Worm gears are classified as a screw pair in the lower pairs. Worm gears have high relative sliding, which is advantageous when comparing them to other types of gears. Worm gears require good surface finish and rigid positioning. Worm gear lubrication usually comprises surface active additives such as silica or phosphor-bronze. Worm gear lubricants are often mixed. The lubricant film that forms on the gear teeth has little impact on wear and is generally a good lubricant.