A – Bearings with internal design different from the standard.
A – Angular contact ball bearings with a contact angle of 30 degrees.
A5–Angular contact ball bearing with a contact angle of 25 degrees
Z, ZS–One side with steel plate dust cover.
ZZ, ZZS–Both sides with steel plate dust cover.
D, DU–One side with contact rubber seal.
C1–Radial clearance of radial bearing, smaller than C2 clearance.
C2–Radial clearance of radial bearing, smaller than standard clearance.
CN (omitted) – radial standard clearance of radial bearing.
C3–Radial clearance of radial bearing, larger than the standard clearance.
C4 – to the heart bearing radial clearance, than C3 clearance.
B–40 ° contact angle; A–25 ° contact angle; C–15 ° contact angle; J– hit the pressure steel cage; LI – machine-cut copper alloy cage; DB – back to back configuration; DF – face to face configuration; CS- -radial clearance greater than the standard clearance.
AB outer ring with flange outer ring, and the basic model is not interchangeable
AC inner ring Different inner diameter and rounded outer diameter, different internal geometry
Outer ring Different outer diameter / width / or fillet radius from the basic type
AD Outer ring Double outer ring, not interchangeable with basic model
CR inner/outer ring bearing series with outer raceway flange
CX Inner ring Dimensions different from the basic type, not interchangeable
D inner/outer ring double inner ring or double outer ring, and the basic model is not interchangeable
P- bearing with sealing ring on one side
PP- bearing with sealing ring on both sides
RS- bearing with sealing ring on one side
2RS- bearing with sealing ring on both sides
P6- Bearings with high dimensional tolerances and geometrical accuracy
P5- Bearings with high dimensional and geometrical tolerances
P4- Bearings with high dimensional tolerances and geometrical accuracy
4CRI- four-row cylindrical roller bearing inner ring, for example: 4CRI4560F
4CRO- four-row cylindrical roller bearing outer ring, example: 4CRO660AF
E- magnetic motor ball bearing, outside diameter for positive tolerance, example: E10
EN- magnetic motor ball bearing, outside diameter for negative tolerance, example: EN10
A- angular contact bearing, contact angle of 30 degrees (not marked), example: 7210
B- angular contact bearing, contact angle 40 degrees, example: 7210B
C- angular contact bearing, contact angle 15 degrees, example: 7210C
RSC- RS type seal made of silicone rubber, example: 6210RSC
RSD- RS type seal made of polypropylene rubber, example: 6210RSD
RSE- Single-sided, flange-guided contact synthetic rubber seal, example: 6206RSE
K- bearing with tapered hole, taper 1:12, example: 1210K
K30- bearing with tapered bore, tapered to 1:30, example: 23026K30
N- outer ring with stop groove bearing, example: 6206N
C- with lock hole tapered roller bearings
NR- outer ring with stop ring bearing, example: 6210NR
Y- smaller than the standard chamfer size of non-standard chamfer, example: 30206Y
S- tapered roller bearings, non-standard chamfer (oblique chamfer)
SG- tapered roller bearing with spiral groove inside diameter
CJ CC,CJ J C,CD Spherical roller bearings with pressed steel cage
YM M2 M CAM,M Single-piece roller-guided machined bronze cage
YMB MC MB – Machined bronze cage with single-piece inner ring guidance
C02 C02 T52BE P53 Inner ring with P5 running accuracy. W4 (SKF does not include W4)
C02 C3 C023 C3.T52BE – Inner ring with P5 running accuracy. Radial play of C3
C02 C4 C024 C4.T52BE – Inner ring with P5 running accuracy. Radial clearance of C4
C04 C04 T52BN P52 – outer ring with P5 running accuracy. W4 (SKF does not include W4)
C04 C3 C043 C3.T52BN – Outer ring with P5 running accuracy. Radial clearance of C3
C04 C4 C044 C4.T52BN – outer ring with P5 running accuracy. Radial clearance of C4
C08 C08 T52BW C02 P55 with P5 running accuracy (C02 and C04)
C08 C3 C083 C3.T52BW – with P5 running accuracy (C02 and C04). Radial play of C3
C08 C4 C084 C4.T52BW – with P5 running accuracy (C02 and C04). Radial clearance for C4
C6 C6 – – special clearance, no details
K K K K K Tapered bore (taper ratio 1:12, for series 22, 23, 30, 31, 31, 33, 39)
K K30 K30 – tapered bore (taper ratio 1:30, for 40,41,42 series)
W4 W4 J26A – high and low points marked on the inner and outer rings
W6R – – – Special surface on roller surface. Resistant to insufficient lubrication and abrasive wear loss
W8 – – Timken? TDCTM coating on inner and outer ring and roller surfaces
W20 W20 SY E3 outer ring with standard lubrication holes
W22 W22 70085 – Special outer ring OD tight tolerance
W25 W73 – – Outer ring with countersunk lube holes
WanYu Bearing Co., Ltd. is a bearing factory with more than 100,000 kinds of bearings, if you have a bearing problem you want to consult please contact us in time, we will provide you with fast service!
Tel: +86 15969613555