Which type of bearing is used in motor?

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Which type of bearing is used in motor?

Rolling-element bearings, also known as anti-friction bearings, are an indispensable part of most electric motors.

What are the two types of bearings used in most motors?

There are two main types of load that act on the bearings of a motor – radial and axial. Radial – A radial load is defined as a load that is applied perpendicular to the shaft.

Why we use ball bearings in shafts of motors?

The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. It achieves this by using at least two races to contain the balls and transmit the loads through the balls.

What are the advantages of roller bearings?

The outstanding benefits of the tapered roller bearings include being able to handle significant load capacity from both the axial and radial force directions of the metal components in use. Additionally, the tapered design allows for larger grease reservoirs between the radial and axial clearance zones.

Do motors have ball bearings?

Most electric motors in industrial facilities consist of rolling element bearings, either ball bearings or roller bearings.

How do you choose a motor bearing?

Other primary factors for bearing selection include:

  1. Connection type.
  2. Speed.
  3. Temperature.
  4. Type of lubrication.
  5. Electric arcing.
  6. Moisture.
  7. Shaft misalignment.
  8. Avoid over-lubrication.

What is the disadvantage of ball bearing?

Disadvantages of Ball bearings: It may break due to shocks. Little noisy.

What are the advantages of roller bearing?

Rolling-element bearings have the advantage of a good trade-off between cost, size, weight, carrying capacity, durability, accuracy, friction, and so on.

What is the difference between roller and ball bearing?

A roller bearing is a cylindrical unit that is used to provide low-friction movement for a bushing or bearing block. A ball bearing is a spherical unit that accomplishes the same objective as a roller bearing. The real difference has to do with the contact surface between the bearing and the rail.

What is advantage of ball bearing?

Ball bearings are traditionally used in high-speed, low-load applications, where their reduced friction, noise, and vibration help prevent excess wear and tear. Ball bearings typically accommodate radial loads or loads that are perpendicular to the shaft.

What is the main disadvantages of rolling bearing?

More noisy at very high speeds. Low resistance to shock loading. More initial cost. Design of bearing housing complicated.

Which bearing is more efficient?

ordinary bearings : 95 – 98% roller bearings : 98% ball bearings : 99% spur gears with cut teeth including bearings : 99%

What are the benefits of ball bearings?


  • The bearing uses grease with higher dripping point (195 degree)
  • Large operating range temperature ( -40 ~ 180 degree)
  • Better sealing shield to prevent leaking of lubricant and avoid foreign particles.
  • Easy bearing replacement.
  • Increase motor performance (less motor friction)
Categories: FAQ