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Ball Bearings
A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the moving parts of the bearings – the inner and outer part of the bearings. The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. Ball bearings are of simple design, durable in operation and easy to maintain. They are available in single and double row designs and in open and sealed variants. Due to their low frictional torque, they are suitable for high speeds.
Deep Groove Ball Bearings
The deep groove ball bearings are non – separable bearings. These bearings can take radial & axial load and can run at high speed. They are available as plain or sealed bearings. The bearings are economically prized and hence most widely used. The bearings are available in metric and inch series.
Angular misalignment capability of these bearings are very limited, hence while mounting bearing positioned must be perfectly aligned in housing and shaft. Minimum load of P/Cr >0.01 is required for these bearings for smooth and slippage free operation.
Single Row Deep Groove Ball Bearings with Shield/Seal
A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the moving parts of the ball bearings – the inner and outer part of the bearings. The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. Ball bearings are of simple design, durable in operation and easy to maintain.
They are available in single and double row designs and in open and sealed variants. Due to their low frictional torque, they are suitable for high speeds. NBC bearing manufactures a wide range of both metric and inch series deep groove ball bearings, angular contact ball bearings, and self-aligning ball bearings among others, including Thermo Mechanical Bearings (TMB) for longer life and special heat-treated bearings for dimensional stability at high temperatures.
Double Row Deep Groove Ball Bearings
Angular Contact Ball Bearings
The contact angle is defined as the angle between the line joining the point of contact between the raceway and ball at the radial plane. In addition to the radial loads, because of contact angle, these bearings can also support axial load. The axial load carrying capacity of these bearings increases as the contact angle.
Due to lower shoulder, number balls can be accommodated in these bearings. This increases the radial load carrying capacity.
Single Row Angular Contact Bearing
Double Row Angular Contact
Double row angular contact ball bearings consists of inner, outer rings, ball and cage assemblies with sheet steel or polyamide cage. The bearings are available in open and sealed designs. Bearing can support radial and axial loads in both the directions due to the raceway geometry and the two rows of balls.
Double row angular contact bearing design is similar to single row. Design d on back to back arrangement. They can support load in both the direction. Because of the second row the load carrying capacity is enhanced. The contact angle is 250. The bearings are available in shield and rubber seals.
Thrust Ball Bearings
It consists of balls supported in a ring, can be used in low thrust applications where there is less axial load.
Lubrication
- Reduces friction and wear.
- Extends Bearing life.
- Prevents rusting.
- Prevents penetration of foreign matter.
Seals
Self – Aligning Ball Bearing
In a self-aligning bearing, outer ring has a single spherical raceway with its center of curvature in line with the bearing axis and the inner ring has two raceways. The bearings support radial and limited axial loading. This allows the axis of the inner ring, balls and cage to deflect around the bearing center to correct misalignment caused between housing and shaft . In case of misalignment, the ball, cage and inner ring can swivel with respect to outer race. The bearings are available with straight bore and tapered bore. In some cases, the ball slightly protrude from the bearing face. For more details contact NEI engineering.
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