Imported from Germany FAG bearing code by the basic code, codes of front and rear codes. Basic types of basic code said FAG bearing, structure and size. Pre - code the imported bearing parts in the basic code before. Rear code said imports bearing structure shape, size, sealing, cage, tolerance, clearance, heat treatment, packaging, technical requirements, such as have change, after the imported bearing basic code to add complementary code.
A, front-end code
Front code R the direct bearing on the basic code before the rest of the front code with basic code separated by dots.
GS - thrust cylindrical roller bearing race. Example: 81112 GS.
K - rolling element and cage assembly. Example: thrust cylindrical roller and cage assembly k. 81108.
R - without a separable inner ring and outer ring of the bearing. Example: RNU207 - not NU207 cylindrical roller bearings with inner ring.
WS - thrust cylindrical roller bearing shaft circle. Example: the WS. 81112.
Second, the post code
Post code on the back of the basic code. When the rear with multiple sets of symbol should be listed in the table according to import bearing code post code of the arrangement of the order from left to right. Some post code with basic code is separated by dots.
(1) internal structure
A, B, C, D, E, internal structure change
Case 1: angular contact ball bearings, 7205 E, 7205 B, 7205 C 15 degrees C - contact Angle, E - 25 degrees of contact Angle, contact Angle B - 40 degrees.
Example 2: cylindrical roller thrust spherical roller bearing, spherical roller and N309E, 21309 e, 29412 e - enhanced design, bearing load capacity.
The VH - full cylindrical roller bearing (months-moons diameter is different from the standard of the same model of roller bearing). Example: NJ2312VH
(2) the appearance of the bearing size and external structure
DA - with double half an inner ring of the separable type double row angular contact ball bearings. Example: 3306 da
DZ - cylindrical roller bearing outside diameter. Example: ST017DZ
K - cone bearing and taper 1:12. Example: 2308 k.
K30 - cone bearing and taper 1:30. Example: 24040 k30.
Both sides 2 ls - double inner ring, double row cylindrical roller bearings with dust cover. Example: NNF5026C. 2 ls. V - internal structure change, double inner ring, two sides with dust cover, double row full cylindrical roller bearing.
N - with locking slot on outer ring of bearing. Example: 6207 n.
NR - on the outer ring with locking slot and stop ring bearings. Example: 6207 nr.
N2 - with two locking slot on the outer ring four-point contact ball bearing. Example: QJ315N2.
S - outer ring lubrication oil and three oil hole of the bearing. Example: 23040 was. Bearing outside diameter D is greater than or equal to 320
X - shaped size comply with the provisions of the international standard. Example: 32036 x.
Z - the technical requirement of special structure. Since Z11 drill down in turn. Example: Z15 - stainless steel bearing (W - N01.3541).
ZZ - two guide roller bearing with outer ring.
(3) the sealing and dustproof
RSR - bearing with seals. Example: 6207 RSR.
ZR - bearing side with dust cover. Example: 6207 zr.
2 zr - both sides bearing with sealing cover. Example: 62072 zr.
ZRN - bearing side with dust cover, the other side with locking slot on the outer ring. Example: 6207 ZRN.
2 ZRN - both sides bearing with dust cover, with locking slot on the outer ring. Example: 62072 ZRN.
(4) the cage and its materials
1) solid cage
A or B in the cage code, after A for cage guided by outer ring, B says cage guided by inner ring.
F - steel solid cage, guide roller.
FA entities - steel cage, outer guide.
FAS entities - steel cage, outer guidance, with lubrication slot.
FB entities - steel cage and inner ring.
FBS entities - steel cage and inner ring, with lubrication slot.
FH entities - steel cage, after carburizing and quenching.
H, H1 - carburizing and quenching cage.
FP - steel window of entity type cage.
FPA entities - steel window type cage, outer ring.
FPB entities - steel window type cage, inner ring.
FV FV1 - steel entity hole is keep frame, the limitation and tempering treatment.
L - light metal solid cage, roller guides.
LA entities - light metal cage, outer guide.
LAS entities - light metal cage, outer guide, with lubrication slot.
LB - light metal solid cage and inner ring.
LBS - light metal solid cage, inner ring, with lubrication slot.
LP - light metal entity window type cage.
LPA entities - light metal window type cage, outer guide.
LPB entities - light metal window type cage, inner ring guide (thrust roller bearing shaft guide).
M, M1 entities - brass cage.
MA entities - brass cage, outer guide.
MAS entities - brass cage, outer guidance, with lubrication slot.
MB - brass solid cage, inner ring guide (thrust spherical roller bearing ring for shaft guide).
MBS entities - brass cage, inner ring, with lubrication slot.
MP - brass entities cage pocket hole straight.
MPA - brass entity straight hole cage, outer guide.
MPB - brass entity straight hole cage, inner ring.
T - phenolic laminated tube distribution entities cage, roller guides.
TA - phenolic laminated tube distribution entities cage, outer guide.
B - phenolic laminated tube distribution entities cage, inner ring.
Considered - phenolic laminated tube roller cage, inner ring.
TP - phenolic laminated tube straight hole bag cage.
TPA - phenolic laminated tube straight hole cage, outer guide.
TPB - phenolic laminated tube straight hole cage, inner ring.
TN - engineering plastic mold injection cage, roller guide, with additional figures show that the different materials.
TNH - engineering plastics self-locking pocket roller cage.
TV - glass fiber reinforced polyamide solid cage, ball guide.
TVH - glass fiber reinforced polyamide self-locking pass entities cage, ball guide.
TVP - glass fiber reinforced polyamide window entities cage, ball guide.
TVP2 entities - glass fiber reinforced polyamide cage, roller guides.
TVPB entities - glass fiber reinforced polyamide cage, inner ring guide (thrust roller bearing shaft guide).
TVPB1 - glass fiber reinforced polyamide entity window cage, shaft guide (thrust roller bearings).
