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Current Location: Home >> Bearing Technology >> Material tables
  Bearing Technology

Bearing Basic Technical How Bearings Works Lubricant Tables Material Tables
Radial Play Tables Tolerances Tables Tolerances Tips

Steel Specification Tables
(a) Chemical composition of bearing steel

 

Spec

C%

Si%

Mn%

P%

S%

Cr%

Mo%

Ni

N

Hard-
ness

Chrome

SAE52100
SUJ2

0.95
- 1.10

0.15
-0.35

0.50
max

0.025
max

0.025
max

1.30
-1.60

-

-

-

60-64
HRC

Stainless Steel

AISI440C
SUS440C
X105CrMo17

0.95
-1.20

1.00
max

1.00
max

0.04
max

0.03
max

16.0
-18.0

0.75
max

-

-

58-62
HRC

KS440
ACD34
X65Cr13

0.60
-0.75

1.00
max

1.00
max

0.04
max

0.03
max

11.50
-13.50

0.75
max

-

-

58-62
HRC

AISI420B
SUS420J2
X30Cr13

0.26
-0.35

1.00
max

1.50
max

0.04
max

0.03
max

12.0
-14.0

-

-

-

53-57
HRC

AISI304
SUS304
X5CrNi1810

0.08 max

0.75
max

2.00
max

0.045
max

0.03
max

18.0 -20.0

-

10.5

0.1
max

92
HRB

AISI316
SUS316
X5CrNiMo17-12-2

0.08 max

0.75
max

2.00
max

0.045
max

0.03
max

16.0 -18.0

2.0 -3.0

10.0 -14.0

0.1
max

95
HRB


(b) Stainless steel grades for EZO Japan bearings

 

Stainless Steel
Grade

Bearing Types

Comments

Inner
and
outer
rings

AISI440C
SUS440C
X105CrMo17

S6709 upwards
S6809 upwards
S6907 upwards
S6006 upwards
S6206 upwards
S6305 upwards


KS440
ACD34
X65Cr13

0.6mm - 9mm bore
0.04" - 0.75" bore
S6700 - S6708
S6800 - S6808
S6900 - S6906
S6000 - S6005
S6200 - S6205
S6300 - S6304

 

Balls

AISI440C
SUS440C
X105CrMo17

All

 

Shield

AISI304
SUS304
X5CrNi1810

All

 

Cage

AISI304
SUS304
X5CrNi1810

0.6mm - 9mm bore
0.04" - 0.75" bore
S6701 upwards
S6800 upwards
S6900 upwards
S6000 upwards
S6200 upwards
S6300 upwards

ribbon cage only +SMR128/SMR137 crown cage
ribbon cage only



S6000-2RS - S6006-2RS have nylon crown cage
S6200-2RS - S6206-2RS have nylon crown cage

SUS420J2
X30Cr13

0.6mm - 9mm bore
0.04" - 0.75" bore
S6700

crown cage only + SMR137/ SMR128 ribbon cage
crown cage only


(c) Stainless steel grades for SMB China bearings

Component

Stainless Steel
Grade

Bearing Types

Comments

Inner and
outer rings

AISI440C
SUS440C
X105CrMo17

All

 

Balls

AISI440C
SUS440C
X105CrMo17

All

 

Shield

AISI304
SUS304
X5CrNi1810

All

 

Cage

AISI304
SUS304
X5CrNi1810

All

 


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