What Are Our Concerns About Bearings（37）

Q1:6205 bearing model size,FAG 6205, what is the bearing model size?  

A:Bearing Type: 6205  

Bearing brand: FAG  

Bearing type: deep groove ball bearing  

Inside diameter D: 25 mm  

Outer diameter D: 52 mm  

Thickness B: 15 mm  

Reference model no. : 6205  

Deep groove ball bearing (Type 60000)  

FAG6205 bearing old and new model replacement:  

New model replacement: 6205  

Old replacement model: 205  

Q2:The significance of the rolling bearing code: 6250, n308 / p4, 30207720 8 ac/p5, what type of bearing is respectively 51106?  

A:6250 deep groove ball bearing  

N308 / P4, Cylindrical roller bearing  

30207, Tapered roller bearing  

7208AC/p5, angular contact ball bearings  

51106 Thrust ball bearing  

1208 Self-aligning ball bearing  

Q3：What is the meaning of 6102 rolling bearing code?

A:It should be called 6002, the old code name is 102, the meaning is that the last two 04 is the inner diameter of the bearing, the larger the last two larger the inner diameter of the bearing, the third from the bottom 1(0) represents the outer diameter and thickness, the larger the outer diameter is, the thicker the thickness,6 represents the bearing category,6 represents the deep groove ball bearing

Q4:What is the meaning of RS in bearing 6005 2RS?  Does it represent the meaning of domestic bearings?  

A:6005 2RS. 2RS stands for bearing with sealing rings on both sides. The domestic model is 180105.  

FAG bearing rear code (suffix) and its meaning  

F- Steel solid cage, rolling body.  

Fa-steel solid cage, outer ring.  

FAS- steel solid cage, outer ring, with lubrication groove.  

FB- Steel solid cage, inner ring.  

FBS- Steel solid cage, inner ring, with lubrication groove.  

FH- Steel solid cage, carburized and hardened.  

H,H1- Carburizing and quenching retainer.  

P5- Tolerance class in accordance with the international standard ISO level 5.  

P4- Tolerance class in accordance with the international standard ISO level 4.  

P2- Tolerance classes ISO Grade 2 (excluding tapered roller bearings)  

NSK bearing pre-code meaning  

F — Deep groove ball bearings with flange outer ring (for d less than 10 mm), example :F605.  

HR — Tapered roller bearing with high load, example: HR30207J.  

Meaning of NSK bearing postposition code  

A — Bearing with internal design different from standard.  

A — Angular contact ball bearing, contact Angle is 30 degrees.  

A5 — Angular contact ball bearing, contact Angle 25 degrees  

Z, ZS — One side with steel dust cover.  

ZZ, ZZS — Dust cover with steel plate on both sides.  

D, DU — with contact rubber seal on one side.  

C1 — Radial clearance of centripetal bearing, smaller than C2 clearance.  

C2 — Radial clearance of centripetal bearing, smaller than the standard clearance.  

CN (omitted) — Radial standard clearance for radial bearings.

C3 — Radial clearance of centripetal bearing, larger than standard clearance.  

C4 — Radial clearance of centripetal bearing, larger than C3 clearance.  

NTN bearing suffix meaning  

B — 40° contact Angle;  A — 25° contact Angle;  C — 15° contact Angle;  J — Pressing steel cage;  LI — Machine cutting copper alloy cage;  DB – Back-to-back configuration;  DF — face to face configuration;  CS — Radial clearance is greater than standard clearance.  

TIMKEN bearing suffix meaning  

AB outer ring with flange outer ring, not interchangeable with the basic model  

AC inner ring with different inner diameter and rounded outer diameter, different inner geometry  

Outer ring outside diameter/width/or fillet radius different from base model  

AD outer ring Dual outer rings are not interchangeable with the basic model  

CR Series of bearings with flanges in inner/outer raceway  

CX inner ring size is different from the basic model and is not interchangeable  

D Inner/outer ring Double inner or double outer ring, not interchangeable with the basic model  

INA bearing suffix meaning  

P- bearing side with sealing ring  

PP- bearing with sealing rings on both sides  

Rs-bearing with sealing ring on one side  

2RS- Bearing with sealing rings on both sides  

P6- Bearings with higher dimensional tolerances and geometric accuracy requirements  

P5- Bearings with high dimensional tolerance and geometric accuracy requirements  

P4- Bearings with extremely high dimensional tolerances and geometric accuracy  

KOYO bearing precode meaning  

4CRI- four row cylindrical roller bearing inner ring, example: 4CRI4560F  

4CRO- outer ring of four row cylindrical roller bearing, example: 4CRO660AF  

E-magneto ball bearing with positive tolerance outside diameter, example: E10  

EN- magneto ball bearing with negative tolerance outside diameter, example: EN10  

KOYO bearing suffix meaning  

A-angular contact bearing, contact Angle 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-silicone rubber RS seal, example: 6210RSC  

RS type seal made of rsd-polypropylene rubber, example: 6210RSD  

RSE- single side, flange contact type synthetic rubber seal, example: 6206RSE  

K- bearing with taper hole, taper of 1:12, example: 1210K  

K30- bearing with taper hole, taper of 1:30, example: 23026K30  

N-ring bearing with stop groove, example: 6206N  

C- Tapered roller bearings with lock holes  

NR- bearing with stop ring on outer ring, example: 6210NR  

Y- Non-standard chamfering less than the standard chamfering size, for example, 30206Y  

S-tapered roller bearings, Non-standard Chamfering (Bevel Chamfering)  

SG- Tapered roller bearings with spiral grooves in inner diameter