|
|
| You are here:Home >> Technical Information |
 |
|
1. Characteristics of Various
of Bearings
2. Material
-The rings, balls,
needles and rollers of ACCOR bearings can be made of
refining bearing steel AISI52100, stainless steel
AISI440C, AISI420, etc.
-Cages are
normally punch-pressed from brass strips H62 or
steel strips 08, SPCC BQB402, as well as stainless
steel strips AISI304, AISI302, fiber reinforced
phenolic resin, plastics or copper stock, etc;
-The shields can be made of Japanese SPCC
JISG3141 or stainless steel AISI304 or
AISI302.
-Seals: synthetic rubber hot
pressed with phosphatizing steel (AISI304 or
AISI302 may used for stainless steel bearings)
skeleton
The chemical composition of
bearing steel and stainless steel are listed as
follows:
| Steel No. |
c% |
Si% |
Mn% |
S% |
P% |
Cr% |
| AISI52100 |
0.95-1.05 |
0.15-0.3 |
0.25-0.45 |
<0.025 |
<0.025 |
1.3-1.6 |
| AISI440C |
0.90-1.05 |
<0.8 |
<0.8 |
<0.04 |
<0.03 |
16-19 |
Country |
China |
ISO |
U.S.A |
Germany |
Japan |
Sweden |
Bearing Steel No. |
GCr15 |
683/XVII1 |
(AISI)52100 |
(Din)100Cr6 |
(Jis)SVJ2 |
SKF3 |
3. Bearing
Precision Grade
| Standards |
Precision Grade |
| GB |
G |
E |
D |
C |
B |
| ISO |
Normal Class |
Class6 |
Class5 |
Class4 |
Class2 |
| ANSI |
ABEC-1 |
ABEC-3 |
ABEC-5 |
ABEC-7 |
ABEC-9 |
| DIN |
P0 |
P6 |
P5 |
P4 |
P2 |
| JIS |
0 |
6 |
5 |
4 |
2 |
4. Rolling
Bearing's Tolerance
Precision of radial bearings
(excepting taper roller
bearings)
Precision of taper roller
bearings
Precision of thrust ball
bearings
Precision of conic bore radial
bearings
5. Deep Groove Ball
Bearing's Vibration and Noise Class
The
vibration and noise of deep groove ball bearings
are normally classified as Z1, Z2(higher class
than Z1), and Z3 (highest class). It is usually
measured by instrument of SO910-1. While for
bearings used for electric motors, the vibration
& noise is measured by BVT-1 and classified as
EMQ ZV1, ZV2 and ZV3. Customer needs to mark the
requirement of vibration and noise class in
order.
Bearing Vibration speed
Grade can not be over the following
Values(dB)
| Bore Diameter (mm) |
Diameter Series |
Diameter Series |
Diameter Series |
| Z1 |
Z2 |
Z1 |
Z2 |
Z3 |
Z1 |
Z2 |
Z3 |
| 4 |
34 |
32 |
35 |
32 |
30 |
36 |
33 |
31 |
| 5 |
36 |
34 |
37 |
34 |
32 |
37 |
35 |
33 |
| 6 |
36 |
34 |
37 |
34 |
32 |
37 |
35 |
33 |
| 7 |
38 |
35 |
38 |
36 |
34 |
-- |
-- |
-- |
| 8 |
38 |
35 |
38 |
36 |
34 |
-- |
-- |
-- |
| 9 |
40 |
36 |
40 |
37 |
35 |
-- |
-- |
-- |
| 10 |
42 |
38 |
42 |
39 |
35 |
44 |
40 |
37 |
| 12 |
43 |
39 |
43 |
39 |
35 |
45 |
40 |
37 |
| 15 |
44 |
40 |
44 |
41 |
36 |
46 |
42 |
38 |
| 17 |
44 |
40 |
45 |
41 |
36 |
47 |
42 |
38 |
| 20 |
45 |
41 |
46 |
42 |
38 |
48 |
43 |
39 |
Single Bearing
Vibration Speed Grade Allowed The Limit
Value(um/s)
Bore Diameter
d
mm |
V1 |
V2 |
V3 |
| Low Frequency |
Medium Frequency |
High Frequency |
Low Frequency |
Medium Frequency |
High Frequency |
Low Frequency |
Medium Frequency |
High Frequency |
| 5 |
90 |
60 |
50 |
58 |
36 |
30 |
35 |
21 |
18 |
| 6 |
90 |
60 |
50 |
58 |
36 |
30 |
35 |
21 |
18 |
| 7 |
110 |
80 |
65 |
72 |
48 |
40 |
44 |
28 |
24 |
| 8 |
110 |
80 |
65 |
72 |
48 |
40 |
44 |
28 |
24 |
| 9 |
110 |
80 |
65 |
72 |
48 |
40 |
44 |
28 |
24 |
| 10 |
140 |
100 |
85 |
90 |
60 |
50 |
55 |
35 |
30 |
| 12 |
140 |
100 |
85 |
90 |
60 |
50 |
55 |
35 |
30 |
| 15 |
180 |
130 |
100 |
110 |
78 |
60 |
65 |
46 |
35 |
| 17 |
180 |
130 |
100 |
110 |
78 |
60 |
65 |
46 |
35 |
| 20 |
220 |
160 |
125 |
130 |
100 |
75 |
80 |
60 |
45 |
| 22 |
220 |
160 |
125 |
130 |
100 |
75 |
80 |
60 |
45 |
| 25 |
220 |
160 |
125 |
130 |
100 |
75 |
80 |
60 |
45 |
6.
Bearing's Internal Radial Clearance of
...
Deep Groove Ball
Bearings
Matched Angular Contact Ball
Bearings
Double Row Angular Contact
Ball
Bearings
Self-aligning Ball
Bearings
Electrical Motor
Bearings
Cylindrical Roller Bearings
Needle Roller
Bearings
Spherical Roller
Bearings
7. ISO1132/GB4199
Bearing Tolerance Symbols Definitions
8. Characteristics
of grease
lubrication
9. inch-mm conversion
table |
|
|
