| Stainless steel bearings manufacturer |
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Wolee Bearing Co.,Ltd is a Chinese factory specializing in Ball Bearings since 1995 in China. We supply high quality Stainless Steel Ball Bearing at reasonable prices and prompt delivery. Corrosion resistant bearings are key to further development. We also can supply many kind special bearings for stainless steel and carbon steel .If you have any special requirement please contact us maybe we can do that for you...
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 Accuracy Standard |
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ABMA (AFBMA) Standards, ABEC Standards |
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| ABEC 1 |
INNER RING
| BORE DIAMETER |
Tol. for Bore |
Radial
Runout |
| MM |
INCH |
dm |
| Over |
Incl. |
Over |
Incl. |
Low |
High |
| 0 |
10 |
0 |
.3937 |
-3 |
+0 |
4 |
| 10 |
18 |
.3937 |
.7087 |
-3 |
+0 |
4 |
| 18 |
30 |
.7087 |
1.1811 |
-4 |
+0 |
5 |
| 30 |
50 |
1.1811 |
1.9685 |
-4.5 |
+0 |
6 |
| 50 |
80 |
1.9685 |
3.1496 |
-6 |
+0 |
8 | |
กก |
OUTER RING
| OUTSIDE DIAMETER |
Tol. for outer
diameter |
Radial
Runout |
| MM |
INCH |
dm |
| Over |
Incl. |
Over |
Incl. |
Low |
High |
| 0 |
18 |
0 |
.7087 |
+0 |
-3 |
6 |
| 18 |
30 |
.7087 |
1.1811 |
+0 |
-3.5 |
6 |
| 30 |
50 |
1.1811 |
1.9685 |
+0 |
-4.5 |
8 |
| 50 |
80 |
1.9685 |
3.1496 |
+0 |
-5 |
10 |
| 80 |
120 |
3.1496 |
4.7244 |
+0 |
-6 |
14 | |
ABEC 3 |
INNER RING
| BORE DIAMETER |
Tol. for Bore |
Radial
Runout |
| MM |
INCH |
dm |
| Over |
Incl. |
Over |
Incl. |
Low |
High |
| 0 |
10 |
0 |
.3937 |
-3 |
+0 |
2.5 |
| 10 |
18 |
.3937 |
.7087 |
-3 |
+0 |
3 |
| 18 |
30 |
.7087 |
1.1811 |
-3 |
+0 |
3 |
| 30 |
50 |
1.1811 |
1.9685 |
-4 |
+0 |
4 |
| 50 |
80 |
1.9685 |
3.1496 |
-4.5 |
+0 |
4 | |
กก |
OUTER RING
| OUTSIDE DIAMETER |
Tol. for outer
diameter |
Radial
Runout |
| MM |
INCH |
dm |
| Over |
Incl. |
Over |
Incl. |
Low |
High |
| 0 |
18 |
0 |
.7087 |
+0 |
-3 |
3 |
| 18 |
30 |
.7087 |
1.1811 |
+0 |
-3 |
3.5 |
| 30 |
50 |
1.1811 |
1.9685 |
+0 |
-3.5 |
4 |
| 50 |
80 |
1.9685 |
3.1496 |
+0 |
-4.5 |
5 |
| 80 |
120 |
3.1496 |
4.7244 |
+0 |
-5 |
7 | |
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WIDTH TOLERANCES
ABEC 1, ABEC 3 |
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BEARINGS OTHER THAN DUPLEX, WIDTH OF INDIVIDUAL INNER OR OUTER RING
| Nominal Bore in MM. |
Width Tolerance |
| Over |
Incl. |
+ |
- |
| 0 |
50 |
0 |
47 | |
กก |
DUPLEX BEARINGS *
TOTAL WIDTH OF INNER OR OUTER RINGS
| Nominal Bore in MM. Width Tolerance |
| Over |
Incl. |
+ |
- |
| 0 |
50 |
0 |
98 |
* If other than a pair of bearings is involved, the tolerance is in proportion to the number of bearings. |
RADIAL INTERNAL CLEARANCE, SINGLE ROW, RADIAL CONTACT, BALL BEARINGS
Tolerance Limits for Radial Internal Clearance of Single Row, Radial Contact Ball Bearings under no load (Applicable to Bearings of ABEC 1, ABEC 3, ABEC 5 and ABEC 7 Tolerance Classes) |
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Basic
Bore
Diameter
d |
SYMBOL 2 |
SYMBOL 0 |
SYMBOL 3 |
SYMBOL 4 |
| mm |
| Over |
Incl. |
Low |
High |
Low |
High |
Low |
High |
Low |
High |
| 6 |
10 |
0 |
3 |
1 |
5 |
3 |
9 |
6 |
11 |
| 10 |
18 |
0 |
3.5 |
1 |
7 |
4 |
10 |
7 |
13 |
| 18 |
24 |
0 |
4 |
2 |
8 |
5 |
11 |
8 |
14 |
| 24 |
30 |
0.5 |
4.5 |
2 |
8 |
5 |
11 |
9 |
16 |
| 30 |
40 |
0.5 |
4.5 |
2 |
8 |
6 |
13 |
11 |
18 |
| 40 |
50 |
0.5 |
4.5 |
2.5 |
9 |
7 |
14 |
12 |
20 |
| 50 |
65 |
0.5 |
6 |
3.5 |
11 |
9 |
17 |
15 |
24 |
| 65 |
80 |
0.5 |
6 |
4 |
12 |
10 |
20 |
18 |
28 | | | |
The bearings accuracy corresponding for each country
| Country |
Standard |
Accuracy Grade |
| China |
GB307.1 |
0 |
6 |
5 |
4 |
2 |
| International |
ISO |
0 |
6 |
5 |
4 |
2 |
| Sweden |
SKF |
P0 |
P6 |
P5 |
P4 |
P2 |
| Germany |
DIN |
P0 |
P6 |
P5 |
P4 |
P2 |
| Japan |
JIS |
P0 |
P6 |
P5 |
P4 |
P2 |
| U.S.A |
ABMA |
ABEC-1 |
ABEC-3 |
ABEC-5 |
ABEC-7 |
ABEC-9 | |
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See super precision miniature bearings (ABEC 7) Bearings, please visit our precision division of WOLEE | |
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2008-03-06
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