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Bearing preamble (prefix) & post code (suffix) meaning
Source: Bearing network time: 2013-04-05
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Imported bearing pre-post code meaning suffix and prefix number
SKF bearing front code (prefix) and its meaning GS thrust cylindrical roller; thrust needle roller bearing race. Example: GS81107 - thrust cylindrical roller bearing 81107 seat.
K thrust roller and the holder of the bracket. Example: K81170.
K- Fit AFBMA specification series Inch tapered roller bearings with inner ring (inner cone) or outer ring (cone ring) with roller and holder assembly. Example: K-09067 series is the inner cone of 09000 tapered roller bearing body.
L Single bearing inner ring or outer ring. Example: LNU207 cylindrical roller bearing NU207 inner ring.
SKF bearing rear code (suffix) and its meaning single-row angular touch ball bearing ACD touch angle is 25 degrees.
B The touch angle is 40 degrees.
The CC touch angle is 12 degrees.
Spherical roller bearings CAC; ECAC; CA; ECA These are used for large-scale bearings; the rollers are symmetrical. The inner ring has fixed ribs on both sides; the active circlip is guided by the inner ring. The bracket is made of brass or Steel solid frame. CAC and ECAC bearing roller and raceway surface are optimized for machining; help roller guide; and reduce conflicts. ECAC type with reinforced roller;
-2F Spherical ball bearings with dust ring on both sides.
-2FF outer spherical ball bearing with combined dust ring on both sides.
G Universal pairing single row angular contact ball bearings. When placed face to face or back to back; there is a certain preload of the device in the bearing.
GA face to face; when placed back to back; there is a lighter preload in the bearing.
GB face to face; when placed back to back; medium preload in the bearing.
GC face to face; when placed back to back; heavy preload in the bearing.
K tapered hole; taper 1:12.
K30 tapered hole; taper 1:30.
The FAG bearing pre-code (prefix) and its meaning R are placed directly before the bearing code; other pre-codes are separated from the root code by small dots.
GS thrust cylindrical roller bearing race. Example: GS. 81112
KC-Combination of the roll and the holder. Example: The combination of the thrust cylindrical roller and the holder. 81108.
FAG bearing rear code (suffix) and its meaning F-steel entity adhere to the frame; roll body guidance.
The FA-steel entity adheres to the frame; the outer ring guides.
FAS-steel body adheres to the frame; outer ring guides with lubrication grooves.
FB-steel body adheres to the frame; inner ring guides.
FBS-steel body adheres to the frame; inner ring guides with lubrication grooves.
FH-steel solids adhere to the frame; carburized and quenched.
H, H1-carburized and quenched to stand.
The P5-public service level meets the 5th level of the international standard ISO rules.
P4 - The level of public service is in line with the international standard ISO level 4.
P2-Public service level meets international standard ISO level 2 (excluding tapered roller bearings)
NSK bearing front code name F Flange outer ring deep groove ball bearing (for d less than 10 mm); Example: F605.
HR high load tapered roller bearings; example: HR30207J.
NSK bearing rear code meaning A internally depicts a bearing different from the specification.
A corner touch ball bearing; touch angle is 30 degrees.
A5 angular touch ball bearing; touch angle is 25 degrees Z; ZS side with steel dust cover.
ZZ; ZZS with steel plate dust cover on both sides.
D; DU with a touch rubber seal on one side.
C1 radial bearing radial clearance; smaller than C2 clearance.
C2 radial bearing radial clearance; smaller than the gauge clearance.
CN (saving) radial bearing radial gauge clearance.
C3 radial bearing radial clearance; larger than the specification clearance.
C4 radial bearing radial clearance; larger than C3 clearance.
NTN bearing suffix meaning B 40° touch angle, A 25° touch angle, C 15° touch angle, J pressure steel holder, LI machined copper alloy holder, DB back to back equipment, DF face-to-face equipment, CS radial clearance Greater than the specification clearance.
The TIMKEN bearing suffix means that the AB outer ring has a flanged outer ring, which is different from the inner diameter and the rounded outer diameter of the AC inner ring. The inner outer ring is not the same as the outer diameter/width/or Fillet radius AD outer ring double outer ring, with the basic type not interchangeable CR inner/outer ring outer raceway with rib flange bearing series CX inner ring scale is different from the basic type, can not exchange D inner/outer ring double inner ring or Double outer ring, with the basic type can not exchange INA bearing suffix meaning P- bearing one side with sealing ring PP- bearing two sides with sealing ring RS- bearing one side with sealing ring 2RS- bearing two sides with sealing ring P6- scale public service and a few Bearings with high precision requirements P5-scale public service and high precision bearings P4-scale public service and a few high precision bearings KOYO bearing front code meaning 4CRI- four-row cylindrical roller bearing inner ring; 4CRI4560F
4CRO- four-row cylindrical roller bearing outer ring; example: 4CRO660AF
E- magnetic motor ball bearing; outer diameter is positive public service; example: E10
EN- Magnetic motor ball bearing; outer diameter is negative public service; Example: EN10
KOYO bearing suffix meaning A- angular touch bearing; touch angle 30 degrees (not marked); Example: 7210
B-angle touch bearing; touch angle 40 degrees; example: 7210B
C-angle touch bearing; touch angle 15 degrees; example: 7210C
RSC- silicone rubber RS ​​seal; Example: 6210RSC
RSD- polypropylene rubber RS ​​seal; Example: 6210RSD
RSE- single-sided; rib-guided touch-type synthetic rubber seal; example: 6206RSE
K- with tapered bearing; taper 1:12; example: 1210K
K30- with tapered bearing; taper 1:30; example: 23026K30
N-outer ring with snap groove bearing; Example: 6206N
C- Tapered roller bearing with locking hole NR- Outer ring with snap ring bearing; Example: 6210NR
Y- is a non-canonical chamfer smaller than the standard chamfering scale; Example: 30206Y
S- tapered roller bearing; non-standard chamfering (inclination)
SG- Tapered Roller Bearing with Spiral Groove
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