71944C / 71956CP4 EPB60-47 C3P5A high speed ceramic ball bearing EPB60-47

71944C / 71956CP4 EPB60-47 C3P5A high speed ceramic ball bearing EPB60-47
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angular contact thrust bearing


thin section angular contact bearings

Basic Infomation
Place of Origin: CHINA
Brand Name: MONTON
Certification: ISO9001
Model Number: 71944C / 71956CP4
Payment & Shipping Terms
Packaging Details: Singlebox
Delivery Time: 7-35 days
Payment Terms: T/T
Supply Ability: 10000PCS/WEEK
Product Description

71944C / 71956CP4 With Bakelite Cage

Single Row Angular Contact Ball Bearing precision spindle bearings suppliers


Single Row Angular Contact Ball Bearing 71944C / 71956C With Bakelite Cage

Model Size 〆15º 〆25º Cage Material
Limit Speed Limit Speed
ID OD H Rated load amount   Rated load amount  
Cr Cor Grease Oil Cr Cor Grease Oil
71944C 220 300 38 206.6 341.1 2600 4300 194.8 323.0 2200 3800 Bakelite
71948C 240 320 38 225 310 2300 3500 212 300 2200 3300 Bakelite
71952C 260 360 46 281 425 2100 3100 265 400 2000 2900 Bakelite
71956C 280 380 46 282 425 2101 3100 266 400 2001 2900 Bakelite


1) Model: Open, Z, ZZ, RZ, 2RZ, RS, 2RS

2) Quality level: reach the same level as the Japanese and European bearings

3) Tolerance level: ABEC-1 (P0), ABEC-3 (P6), ABEC-5(P5)

4) Noise Level: EMQ V1 Z2, EMQ V2 Z3, EMQ V3 Z4, EMQ V4

5) Application: home appliances, low noise and high speed electric motors; automotive components, pumps, machinery.


Feature of Angular contact ball bearings:

When the single-row angular contact ball bearing is carrying the radial load, they will be a component of force in the axial direction. Therefore it is suggested that two of there bearings be applied in back-to-back or face-to-face arrangements. Single row bearings can carry radial load and axial load in one direction. Double-row angular contact ball bearings have two designs of one outer ring and two inner rings and one outer ring and one inner ring. For the design with one outer ring and two inner rings, the axial clearance is easy to control during machining.



These bearings are mainly applied in the machine tool spindles, high-frequency motors, gas turbines, oil pumps, air compressors, printing machines and other installations.



Ball Bearing - Spindle Bearings

Spindle ball bearings are single-row large ball bearings characterized by their particular design engineered with either a 15° or a 25° angular contact. They contain raceways in both the inner and outer rings which can be displaced in relation to the bearing axis and in relation to each other. These rings are assembled with a stationary cage, and the balls cannot be dismantled from the ball bearing housing.

Spindle ball bearings are designed to provide the utmost support for a number of different types of loads making them popular mining bearings. The mechanism's loading capacity proportionally increases with the augmentation of the contact angle. Due to the device's eminent and relentless accuracy, these ball bearings are often utilized when there is a need for utmost precision, high bearing capacity, high-speed and an impeccable accuracy. As a result, they are primarily used as machine tool spindle bearings and mining bearings.

Engineering & Design
Spindle bearings are designed with a soaring level of radial and axial rigidity in order to accommodate to heavy loads and high speed environments. The axial load is supported in only one of its sides, and is adjusted against a second spindle ball bearing of the same type.

The rings of high speed spindle bearings are typically made from corrosion-resistant steel, while the balls are made from either steel or ceramic. In order to decrease the mechanism's friction and increase the speed, the device is usually supported by a solid plastic (usually phenolic resin) window cage, but different materials are available and may be chosen to accommodate specific room temperatures. Spindle ball bearings are often finished with an external grease, oil or air lubricating coating.

In order to comply by ISO regulations, spindle bearings must abide by tolerance restrictions in regard to their accuracy and dimensions. While these control the shaft's installation onto the bearing houses and the dimensions of the apparatus, the regulations create universal standards which yield utmost simplicity in dissembling and replacing pieces of large ball bearings worldwide.


There are two primary kinds of spindle bearings:

Open Spindle Bearings: These types of spindle bearings contain large balls inside the bearing housing in order to maximize its performance capacity. The external ring in these large ball bearings usually has only one shoulder.

Closed Spindle Bearing: This model has the same external dimensions as open large ball bearings, but is often packed with small balls, reducing the capacity yet increasing the axial rigidity and speed.



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