Spindle Bearing

2019-11-11

The manufacturing of metal parts and components is so significant to any economic marketplace, typically, the machine tool industry is utilizing the latest technological advances in manufacturing processes.

Here we’d like to talk about machine tool SPINDLE BEARING

Most spindles use a combination of angular-contact ball bearings and cylindrical roller bearings. The angular-contact types install at a spindle work end because they handle both axial and radial loads. The other end houses a cylindrical roller bearing which, by design, floats or slips axially to compensate for spindle thermal expansion yet operates with zero radial clearance for rigidity.

The basic requirements for spindle:

High running accuracy
High speed
Wide range of speed
High rigidity
Low temperature rise
High reliability

Some of the above requirements are in confrontation, so it’s almost impossible for spindle to meet all the above requirements simultaneously. Therefore, the main performance of spindle should be taken into consideration when designing spindle supporting. Bearing types and matched method depend on machine tool different performances.

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