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High Quality Ball Bearings

High Quality Ball Bearings

Ball bearings are a part of rolling bearings. As a professional bearing supplier and one of the ball bearing manufacturers in China, ZWA has its own ball bearing factory and the business covers home and abroad. Compared with roller bearings, ball bearings are point contact which makes the obstruction is small, and the contact section is oval. Ball bearings are composed of an inner ring, outer ring, cage or retainer, and balls. The balls are mounted between the inner ring and outer ring. This kind of bearings allows for smooth, high-speed motion, reduced friction, and both axial & radial load capacity. The main function of ball bearings is to confirm the relative position of two parts ( usually shaft and housing), make them rotate freely, and transmit the loads in between. Especially in those high rotating speed conditions, the function can be expanded to free rotating without abrasion.

Different Types of Ball Bearings and Their Uses

In general, ZWA's steel ball bearings for sale use chrome steel and cage can be steel one or brass one. The balls are usually steeled ones, too. ZWA's ball bearings include deep groove ball bearings, angular contact ball bearings and thrust ball bearings with multiple bearing rows. Leam more about our ball bearings of different diameters with diferent numbers.

Deep groove ball bearings are the typical rolling bearings which have the most widely application. It’s suitable for those working conditions with higher rotating speed, lower noise and vibrating levels. Meanwhile, this kind of bearings is easy to mount or dismount, require for less maintenance and inspection.
With deep groove ball bearing factory, ZWA' s products include single row and double row ones. For the single row deep groove ball bearings which are also the most widely used type, ZWA offer it with both capped and open. For the capped ones, it includes anti-rust design and anti-oil design. For the anti-dust design, the bearings are with pressed steel cap. And for the anti-oil design, the bearings are with seals to prevent lubrication leaking from inside.For the double row deep groove ball bearings, while there is deviation of alignment between the inner ring and outer ring, extra load will occur which will cause extra loads to the balls and cages. In this case, the service life of the bearing will reduced. Therefore, the max allowable deviation is only 2 arc minute. Any bigger deviation will increase the noise level.
In the past years, ZWA has offered hundreds pieces of deep groove ball bearings, especially single-row ones to the customers. With higher precision and excellent performance of the bearings, ZWA has favored the customers to reduce the cost, increase the productivity and prolong the service life of the equipment.
  • Deep groove ball bearings are made of

    Basic China deep groove ball bearing is made up of one inner ring, one outer ring, one cage and a group of balls. It can bear both radial and axial load capacity.

  • Features of deep groove ball bearings

    Bearing both radial and axial loads

    Lower friction

    Higher rotating speed

    A kind of self-alignment function 

  • Use and Application of deep groove ball bearings

    As the most widely used bearings, deep groove ball bearings appear in almost every industry, especially in agricultural, construction industry and automobiles

Angular contact ball bearings, also known as acbb bearing, are a kind of inseparable bearings, the side shoulders of the inner ring and outer ring are uneven. In order to increase the load capacity, one of the side shoulders will be lower than the other. This kind of bearings has raceways both on the inner ring and outer ring. The inner ring and outer ring can make a relative replacement in the axial direction. Angular contact ball bearings can bear combined radial and axial loads and also work at a higher rotating speed. In general, the bigger the contact angle, the higher the axial load capacity is. ZWA’s angular contact ball bearings usually with a brass cage.
Angular Contact Ball Bearings Angular Contact Ball Bearings Size PDF
  • Feature of angular contact ball bearings

    Bear higher radial loads

    Bear combined radial and axial loads

    Bear higher rotating speed

    Special design on the raceways of inner ring and outer ring

  • Use and Application of angular contact ball bearings

    Angular contact ball bearings are designed for high-speed and high precision applications, like compressor, chemical industry, main spindle of tooling machine, gearbox, pumps,  agriculture etc.

  • Angular contact ball bearings made of

    Based on different contact angle, angular contact ball bearings can be divided into 70000C type (α=15°), 70000AC type (α=25°), 70000B type (α=40°). Usually, for higher precision and higher rotating speed, the contact angel is 15°.

    Based on different match method, ZWA’s angular contact ball bearings can be divided into back to back paired 70000 C(AC, B) DB type, face to face paired 70000C(AC, B)DF type and four point angular contact bearings (QJ0000).

    Single-row angular contact ball bearings can only bear axial load from one direction and limit the axle or shaft make replacement in only one axial direction. If in case of accommodating radial load, extra axial load will occur.

    Double row angular contact ball bearings can bear combined axial and radial loads in which radial loads are higher.

    For the paired angular contact ball bearings, while mounting the pair, the wide surface should match the wide ones, narrow surface with the narrow one. For further details, please contact ZWA. 

Thrust ball bearings is one of the rotary ball bearings. It owns the same features of other ball bearings, i.e permitting rotation among the parts. Depending on different load capacity, ZWA’s thrust ball bearings include single direction and double direction ones. For the one direction thrust ball bearing, it consist of a shaft ring, a housing ring , cage and balls. It can bear one direction axial load. For double direction thrust ball bearings, it consist of one shaft ring, two housing rings, two-row balls and cage. Those two housing rings and cage components of double direction thrust ball bearing are almost the same to those of single direction thrust ball bearings. It can bear axial loads in two directions. The shaft ring match with the shaft and the mounting surface of housing ring is a kind of spherical bearing which owns the aligning function. Those function can reduce the affect error in mounting. The cages of ZWA’s thrust ball bearings are usually pressed steel and machined brass ones and in ZWA, the thrust ball bearings are usually served in pairs. If you are looking for a special bearing design for your equipment, please keep in mind that ZWA’s engineering team are at your service.
  • Thrust ball bearings made of

    Thrust ball bearing is composed by housing ring, shaft ring, cage and balls. The ring match with the shaft is called shaft ring and the one matched with the housing is called housing ring. Those parts are separable and assembled on the shaft while in application. This kind of bearing can only bear axial load not subjected to any radial load. If in high speed application, oil lubrication is a must. 

  • Features of thrust ball bearings

    Separable and interchangeable due to inner design

    Bear the original misalignment

    Bear high axial load capacity

    Interference fit allowed

  • Use and Application of thrust ball bearings

    Metals, pumps, hook of crane, centrifuge, reducers, mining and cement.

Are you searching for a high and stable quality bearing supplier? Are you managing to reduce the cost by bearings? Do you need customized bearings? ZWA is at your service to offer you all kinds of solutions concerning bearings.

ZWA is looking for distributors all over the world. If you are a quality-oriented distributor, if you suffer from long term delivery and after-sale service, if you want to increase the profit, contact us. ZWA bearings live up your expectations.


Ball Bearing Construction

Ball bearings is kind of rolling bearings. They allow very high rotating speed.

The following four parts usually constitute the ball bearing construction:

Outer ring: it in general does not move in case of rolling.

Inner ring: it rotates with the shaft.

Balls: they are mounted between the inner and outer rings, enable the movement between them.

Cages: they are holders for the balls to retain them in the right positions. Usually they are made of brass or steel.

Shields or seals: they are mainly functioned to prevent contaminant. Those bearings are well-lubricated with grease ex work.

Ball Bearing Construction
Industry Solutions

Applications of Ball Bearing

1.Ball bearings have a very wide application range, especially deep groove ball bearing which is one of the most widely used bearings. The application of ball bearings covers from agriculture, steel & metal process, gearbox, motors, centrifuges, a main spindle of tooling machine, motors, to textile process, etc.

Types of Ball Bearings With Images

  • Deep Groove Ball Bearing
    Deep Groove Ball Bearing
  • Thrust Ball Bearing
    Thrust Ball Bearing
  • Angular Contact Ball Bearing
    Angular Contact Ball Bearing
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