Four Point Contact Bearing QJ312-MPA

Four point contact bearings are single row angular contact ball bearings and therefore require significantly less space in an axial direction than double row designs.The bearings comprise solid outer rings, split inner rings and ball and cage assemblies with brass or polyamide cages.

C3 :Axial internal clearance larger than normal
MPA: Solid brass cage
TVP :Window cage made from glass fibre reinforced polyamide 66
N2: Two retaining slots in outer ring  Standard for larger bearings

Due to the design of the rolling element raceways with their high raceway shoulders, the contact angle of 35° and the large number of rolling elements, four point contact bearings have a high load carrying capacity.

Bearings with solid brass cages can be used at operating temperatures from –30 °C to +150 °C. Bearings with an outside diameter of more than 240 mm are dimensionally stable up to +200 °C.Bearings with cages made from glass fibre reinforced polyamide are suitable for operating temperatures up to +120 °C.