What is a C3 bearing fit?
Internal clearance being C3 means that the bearing has room for expansion if needed between the races of the bearing, whilst holding the outer ring and moving the inner ring in a radial movement you will detect a little amount of play between the two rings. C3 means the bearing has more clearance than standard.
How do I choose a bearing fit?
When selecting fits, you should consider the following topics.
- Conditions of rotation.
- Magnitude of load.
- Temperature differences.
- Precision requirements.
- Design and material of the shaft and housing.
- Ease of mounting and dismounting.
- Axial displacement of the bearing in the non-locating position.
What is the difference between C2 and C3 bearing?
C2 – Refers to a “less than standard clearance”. Bearings with this type of clearance are uncommon and have very limited uses. C3 – Refers to a “greater than standard clearance”. This is the most common type of bearing, and is the correct choice for the majority of applications.
What are C3, C4 and C5 bearings?
C3, C4 and C5 bearings are bearings that have an additional internal radial clearance to cope with high speed environments where excess heat is generated. They are not suited to environments where critical alignment is required from the onset e.g. Where blades and cutters are set up to each other.
When to use a SKF bearing fit chart?
SKF bearing fit chart do not cover all details of a specific application and so you may find that adjustments may be necessary. When selecting fits, you should consider the following topics. Conditions of rotation refer to the relative motion between a bearing ring and the load acting upon it.
What kind of bearings have extra radial clearance?
C3, C4 and C5 bearings are bearings that have an additional internal radial clearance to cope with high speed environments where excess heat is generated. They are not suited to environments where critical alignment is required from the onset e.g.
What causes a loosening of a bearing fit?
This can loosen the fit on the shaft seat, while outer ring expansion can prevent the desired axial displacement in the housing. Rapid start-up can loosen the inner ring fit when the frictional heat generated by the bearing is not dissipated quickly enough.