PS Bearings Co., Ltd.

PS Bearings Co., Ltd.

Products Category
Contact Us

Tel: 0086-519-86399561
Fax: 0086-519-82076087
E-mail: sales@psbearings.com
Add: No.2 Hengxi Road, Niutang Town, Changzhou 213168, China
Skype: psbearings
SKYPE: psbearings

News

Needle Roller Standard

Author:PS Bearings/www.psbearings.com Date:2012-03-13 22:46:11
Needle Roller is very important part for Needle Roller Bearings, Track Rollers and One Way Clutches. Their performance will influence the bearings much. However, we need a standard to control the quality. Roughness, Roundness and Sorting are the most important three factors. Please check the details PS Bearings collecting for you as follows:

Material:

Usually it is GCr15. Some special application will select 440C stainless steel. 

Hardness:

61~65 HRC

Roughness:

Roughness must be no larger than 0.2 um. Superfinished needle roller roughness will be smaller than 0.1 um, some perfect will be smaller than 0.8 um.

 

Sorting:

Sorting means the diameter difference in one lot of needle roller. There are G2, G3 and G5 sorting usually. G2 and G3 is more common. However, customers will need 100% G2 sorting needle roller in some special case, we call them “Size Classification”.

 

Roundness:

G2 Sorting: No larger than 1 um

G2 Sorting: No larger than 1.5 um

G5 Sorting: No larger than 2.5 um

 

If you have any other questions about Needle Rolleror need catalogue, please feel free to contact sales@psbearings.com