We can produce the diameter from 3mm~1 500mm single row deep groove ball bearings. 10mm~100mm double row deep groove ball bearings\and sealed single row deep groove ball bearings\single row deep groove ball bearings with filling slots etc. Following is the internal structure of different product descriptions we produce.

C2 Radial internal clearance smaller than Normal
C3 Radial internal clearance greater than Normal
C4 Radial internal clearance greater than C3
C5 Radial internal clearance greater than C4
dB Two single row deep groove ball bearings matched for paired mounting in a back-to-back arrangement
DF Two single row deep groove ball bearings matched for paired mounting in a face-to-face arrangement
DT Two single row deep groove ball bearings matched for paired mounting in a tandem arrangement
E Reinforced ball set
J Pressed steel cage
M Machined brass cage, ball centred.
MA Machined brass cage, outer ring centred
MAS As MA but with lubrication grooves in the guiding surfaces
MB Machined brass cage, inner ring centred
MBS As MB but with lubrication grooves in the guiding surfaces
N Snap ring groove in outer ring
NR Snap ring groove in the outer ring, with appropriate snap ring
N1 One locating slot (notch) in one outer ring sideface
RS1 Sheet steel reinforced contact seal of acrylonitrile-butadiene rubber (NBR) on one side of the bearing
RSH Sheet steel reinforced contact seal of acrylonitrile-butadiene rubber (NBR) on one side of the bearing
RSL Sheet steel reinforced low friction contact seal of acrylonitrile-butadiene rubber (NBR) on one side of the bearing
RZ Sheet steel reinforced low friction seal of acrylonitrile- butadiene rubber (NBR) on one side of the bearing

TH Snap-type cage of fabric reinforced phenolic resin, ball centred
TN Injection moulded snap-type cage of polyamide, ball centred
TNH Injection moulded snap-type cage of glass fibre reinforced polyetheretherketone (PEEK), ball centred
TN9 Injection moulded snap-type cage of glass fibre reinforced polyamide 6, 6, ball centred
VL0241 Aluminium oxide coated outside surface of the outer ring for electrical resistance up to 1 000 V DC
VL2071 Aluminium oxide coated outside surface of the inner ring for electrical resistance up to 1 000 V DC
WT Grease with polyurea thickener of consistency 2-3 to the NLGI Scale for temperature range -40 to +160 centi degree (normal filling grade)
Y Pressed brass cage, ball centred
Z Shield of pressed sheet steel on one side of the bearing
ZNR Shield of pressed sheet steel on one side of the bearing and snap ring groove in the outer ring with snap ring on the opposite side of the shield
2RS1 RS1 contact seal on both sides of the bearing
2RSH RSH contact seal on both sides of the bearing
2RSL RSL low friction contact seal on both sides of the bearing
2RZ RZ low friction seal on both sides of the bearing
2Z Z shield on both sides of the bearing
2ZNR Z shield on both sides of the bearing and snap ring groove in the outer ring with snap ring