Set code after FAG
(1) the internal structure of
A, B, C, D, E internal structural changes
Example 1: angular contact ball bearings 7205C, 7205E, 7205B, C-15 ° contact angle, E-25 contact angle, the B-40 degree contact angle.
Example 2: cylindrical roller, spherical roller thrust-aligning roller bearings N309E, 21309E, 29412E enhanced design of the bearing load capacity.
VH-roller self-locking, full roller cylindrical roller bearings (roller diameter of the umbra is different from the same type of standard bearings). Cases: NJ2312VH
(2) Bearing Dimensions and external structure
DA-band pairs of semi-inner detachable double row angular contact ball bearings. Cases: 3306DA
DZ-cylindrical outer diameter of the wheel bearings. In: ST017DZ
K-tapered bore bearings, taper 1:12 Example: 2308K.
K30-tapered bore bearings, taper 1:30. Example: 24040K30.
2LS-double inner ring, with a dust cover on both sides of the double row cylindrical roller bearings. Cases of:-internal structure of the Change in NNF5026C.2LS.V, double inner ring, on both sides with a dust cover, full roller double row cylindrical roller bearings.
N-band-stop on the outer ring groove bearing. Example: 6207N.
NR-outer with a stopper bearing groove and snap ring. Example: 6207NR.
N2-outer ring with a groove in two four-point contact ball bearings. Example: QJ315N2.
S-outer ring with lubrication groove and three lubrication holes in the bearing. Cases: 23040. The bearing outer diameter D greater than or equal to 320 mm self-aligning roller bearings are not marked S-.
X-Dimensions comply with the provisions of international standards. Example: 32036X.
Z. - the special structure of technical conditions. From the Z11 from the turn down order. Cases: Z15-stainless steel bearings (W-N01.3541).
ZZ-roller bearings with two guide the outer ring of the retaining ring.
(3) seal and dust
RSR-bearing side with the seals. Example: 6207RSR.
ZR-bearing side with dust cover. Example: 6207ZR.
2ZR-bearings with closures on both sides. Example: 62072ZR.
ZRN-bearing side with dust cover, with the other side of the outer groove. Example: 6207ZRN.
2ZRN-bearing on both sides with a dust cover, with a groove on the outer ring. Example: 62072ZRN.
(4) cage materials
1) solid cage.
A or B is placed in the cage class A cage outer ring guide, B, said cage from the inner guide.
F-steel solid cage, rolling element guide.
FA-steel solid cage, the outer guide.
FAS-steel solid cage, the outer ring guide, with a lubrication groove.
FB-steel solid cage, the inner guide.
FBS-steel solid cage, inner guidance, with a lubrication groove.
FH-steel entity cage, after carburizing and quenching.
H, H1-carburized cage.
FP-steel solid window-type cage.
FPA-steel solid window type cage, the outer guide.
FPB-steel solid window-type cage, the inner guide.
FV, FV1-steel solid fenestrae cage, aging, quenching and tempering treatment.
L-light metal solid cage, ball centered.
LA-light metal solid, the outer guide.
LAS-light metal solid, the outer ring guide, with a lubrication groove.
LB-light metal solid, the inner guide.
LBS-light metal solid, inner guidance, with a lubrication groove.
LP-light metal entity window type cage.
LPA-light metal entity window type cage, the outer guide.
LPB-light metal entity window type cage, the inner guide (thrust roller bearing axis guide).
M, M1-brass solid cage.
MA-brass solid cage, the outer guide.
MAS-brass solid cage, outer ring guide, with a lubrication groove.
MB-brass solid cage, the inner guide (thrust-aligning roller bearing axis circle guide).
MBS-brass solid cage, inner guidance, with a lubrication groove.
MP-brass solid straight Pockets cage.
MPA-brass solid straight the Pockets cage, the outer guide.
Of MPB-brass solid straight Pockets cage, the inner guide.
T-phenolic laminate piping solid cage, ball.
TA-phenolic cloth laminated tube solid cage, the outer guide.
TB-phenolic cloth laminated tube solid cage, the inner guide.
THB-phenolic cloth laminated tube pocket pass the cage, the inner guide.
TP-phenolic cloth laminated tube straight Pockets cage.
TPA-phenolic laminate piping straight Pockets cage, outer boot.
TPB-phenolic cloth laminated tube straight Pockets cage, the inner guide.
TN-engineering plastic mold injection cage, rolling element guide, with figures of different materials.
TNH-engineering plastic self-locking pocket pass cage.
TV-glass fiber reinforced polyamide solid cage, ball guide.
TVH-glass fiber reinforced polyamide self-locking pocket hole entity cage, ball guide.
TVP-glass fiber reinforced polyamide Window solid cage, ball guide.
TVP2-glass fiber reinforced polyamide solid cage, roller guide.
TVPB-glass fiber reinforced polyamide solid cage, the inner guide (thrust roller bearing axis guide).
TVPB1-glass fiber reinforced polyamide solid window-type cage axis guide (roller thrust bearings).
2) cages
J-steel cages.
JN-deep groove ball bearings riveted cage.
3) cage changes.
Plus cage code, or inserted in the cage code the middle of the figure, indicating that maintain the structure after changes. These figures are used only for the transitional period, for example: NU1008M1.
(5) non-cage bearings
V-filled rolling element bearings. Example: NU207V.
VT-with isolation ball or roller filled rolling element bearings. Example: 51120VT.
(6) tolerance level (including dimensional accuracy and rotation accuracy)
P0-tolerance class in accordance to international standards ISO 0, code omitted, does not mean that.
P6-tolerance class in accordance with international standards ISO 6.
P6X-tolerance class in accordance with international standards ISO of 6X tapered roller bearings.
P5-tolerance class in accordance with international standards ISO 5.
P4-tolerance class in accordance with international standards ISO 4.
P2-tolerance class in accordance with International Standard ISO 2 (excluding tapered roller bearings).
SP-dimensional accuracy equivalent to 5 rotation accuracy is equivalent to four (double row cylindrical roller bearings).
UP-dimensional accuracy equivalent to 4, the rotation accuracy is higher than 4 (double row cylindrical roller bearings).
HG-dimensional accuracy equivalent to 4, the rotation accuracy is higher than 4, less than two (spindle bearings).


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