28, 30, 34, 36, 37
GRW Duplex Bearings are world class, they provide accurate alignment in both radial and axial directions. Vibration can be eliminated and a higher load capacity can be achieved by using controlled stiffness within the duplex, which results in increased system reliability.
The matching of GRW duplex bearings is achieved by loading each single bearing with the desired preload, measuring the axial off set and grinding the relevant ring face; when the bearings are assembled they create a precise sub-assembly which can offer:
- Increased load capacity.
- A stiffer assembly
- Controlled axial play or pre-load; lightly pre-loaded bearings help to increase bearing life as the balls run in defined tracks in a true circle.
It is very important that GRW duplex ball bearings are mounted in accordance with the installation instructions on the packaging labels or the marks on the ball bearings themselves.
The individual bearings are matched to ensure the bore and outside diameter have a maximum tolerance range of 2.5 microns. This results in a more balanced and accurate duplex bearing pair. To ensure the correct fits, GRW duplex bearings should be mounted using carefully selected mating parts (shafts and housings). The full assembly can be supplied assembled in GRW's ISO standard (ISO14644-1), class 7 cleanroom.
'Face to face' and 'back to back' duplex bearings are supplied in matched pairs. Universal duplex bearings are supplied individually.