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Stainless steel bearings manufacturer
 


Founded in 1995, CIXI WOLEE INDUSTRY CO., LTD has been specializing in manufacturing bearing accessories and bearings with a lot of experiences in bearing industry. With our business developing and expanding, in May 2015, we acquired CIXI MINHON TRADING CO LTD, that deals with our international business. We now not only produce bearings, but also other mechanical parts and components. Our professional engineers and workers have been especially trained, and worked in mechanical part industry for many years. We have advanced machining and testing equipment. We sincerely welcome any individual or company from all over the world to co-operate with us.

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Our Products
»  More Bearings Products
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»  Stainless steel mirco thrust bearing
»  Stainless steel thrust ball bearing
»  Stainless steel external sphere ball bearings
»  Inch size stainless steel ball bearings
»  Metric size stainless steel ball bearings
»  Angular Contact Ball Bearings
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» Accuracy Standard - 2008-03-06

 



  Accuracy Standard

ABMA (AFBMA) Standards,  ABEC Standards

 
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
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
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

 

WIDTH TOLERANCES
ABEC 1, ABEC 3

 
BEARINGS OTHER THAN DUPLEX, WIDTH OF INDIVIDUAL INNER OR OUTER RING
 
Nominal Bore in MM. Width Tolerance
Over Incl. + -
0 50 0 47
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)

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

See super precision miniature bearings (ABEC 7) Bearings, please visit our precision division of WOLEE

2008-03-06
 

Contact info
» Add:31th Caosean Road Hushan Town Cixi City Zhejiang China.
» Tel: +86-574-81351007
» Fax: +86-574-63838786
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Company News
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» Renamed company name - 2015-05-28
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Industry News
» Stainless steel rod end bearings - 2014-06-03
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» more

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