It represents SKF double row angular contact ball bearings suffix explanation
A No filling slots
CB adjusted axial internal clearance
C2 axial clearance less than ordinary group
C3 axial clearance greater than Normal
D two-piece inner ring
E biggest types of bearings with filling slots
HT51 is used to run a temperature of minus 30 degrees Celsius temperature grease to 140 degrees above zero
J1 steel cage, ball guide
M machined brass cage, ball guide
MA machined brass cage, outside the ring guide
MT33 is used to run a temperature of minus 30 degrees Celsius to 120 degrees above zero containing lithium thickener grease, NLGI grade 3 (normal fill volume)
N outer ring with snap ring groove
NR outer ring with snap ring groove and snap ring
P5 dimensional accuracy and running accuracy in accordance with ISO standard tolerance 5
P6 dimensions and running accuracy in accordance with ISO standard tolerance 6
P62 P6 + C2
P63 P6 + C3
TN9 glass fiber reinforced nylon 66 cage, ball guide
2RS1 bearings on both sides of the belt reinforcing steel Nitrile rubber seals
W64 solid oil filling
2Z bearings on both sides with a stamped steel dust cover (non-rubbing seals)
Some drawings bearing model number prefix BA2B, express this bearing is a double row angular contact ball bearings.
