EN 
ZH Details
Four point contact ball bearings resemble in their construction a pair of single-row angular contact ball bearings in O-arrangement and thus also double-row angular contact ball bearings. Four point contact ball bearings – they have only one row of balls- thus save significantly on installation space in the axial direction. Because of their geometry, they are especially suited to absorbing high axial forces from changing directions.
Special bearing
- Coated bearing
- Thin-section four point contact ball bearing
- Customer-individual construction
Manufacture sizes
Individual manufacture beginning at outer diameter of 250 mm – serial manufacture even at the smallest diameters.
Designs
- With inner ring split in radial direction (QJ)
- With outer ring split in radial direction (Q)
Bearing ring materials
Roller bearing steel (Standard)
Rolling elements materials
Roller bearing steel (Standard)
Heat treatments
–
Cage materials
Brass, sheet steel
Main dimensions
The main dimensions of the standardised four point contact ball bearing comply with the details in DIN 628-4
Dimensional and running accuracy
We manufacture angular contact ball bearings of tolerance classes normal to tolerance class P4 as per DIN 620-2. We manufacture double-
Bearing clearance
We manufacture four point contact ball bearings with bearing clearances C2, normal, C3 and C4 as per the details in DIN 628-4, up to individually limited clearance classes. The values apply to non-built-in bearings with zero measurement load.
Contact angle
Usually 35°
Lubrication
The bearings are not greased and can be lubricated with grease or oil.
Connection with adjacent construction
Positive locking shaft-hub Connection