Changzhou Liangze Bearing Factory
Main products:needle bearing,bearing roller,bearing pin
Products
Contact Us
  • Contact Person : Ms. Iris
  • Company Name : Changzhou Liangze Bearing Factory
  • Tel : 86-519-86398986
  • Fax : 86-519-86390991
  • Address : Jiangsu,changzhou,NO.13 Zhenbei West Road, Niutang Town ,Wujin area.
  • Country/Region : China
  • Zip : 213163

NRA NRB 3*23.8mm needle roller using in machinery

NRA NRB 3*23.8mm needle roller using in machinery
Product Detailed
1.High precision 2.Smooth surface 3.Can meet customer's requirements 4.Good quality and reasonable price 5.Good service

We are manufacturer of cylindrical roller,needle roller and shaft in Changzhou,China.

 1.The details of 3*23.8 mm needle roller

Material standard:GCr 15

Diameter :3mm /Length:23.8 mm

DiameterTolerance:0.003mm/Length Tolerance:0.2mm

2.The details of our products:

Material 

GCr15,Stainless steel,20crmo,40crmo,45#

Our main products 

Needle roller,roller,shaft,needle roller  bearing

Needle roller length tolerance 

0~0.2mm

Roller length tolerance 

0~0.03mm

Diameter tolerance 

0~0.001mm

Diameter

0.7mm to 80mm

Length

2mm to 150mm

Roundnesswithin 0.001mm
Hardness standardHRC58—65
Surface finishwithin 0.1μm
Chamfer

0.1,0.2,0.3

Use                                        

Widely used in machinery industry

Grade

 G1.G2,G3
Certificate ISO 9001:2008

(1)The shape of needle roller

(2)Dimension Tolerance and Geometrical precision

Quality  grade

Deviation

(μm)

Tolerance of each sort (μm)

Group of sort Deviation  (μm)

Roundness Tolerance(Max)

Length Tolerance

G2

0-10

2

0/-2,-1/-3,-2/-4

1

h13

-3/-5,-4/-6,-5/-7

-6/-8,-7/-9,-8/-10

G3

0/-10

3

0/-3,-1.5/-4.5,-3/-6

1.5

-4.5/-7.5,-6/-9,-7/-10

G5

0/-10

5

0/-5,-3/-8,-5/-10

2.5

Shaft

 Bearing

3.About material-----GCr15 

 (1)What's GCr15?

GCr15 is the mostly widely used high-carbon  chromium  bearing steel  with 

 less  alloy content and good performance.It has high and uniform hardness, good 

 abrasion resistance and high contact fatigue performance after heat-treatment 

 and tempring.

 (2)The details of GCr15

Elment

C

Si

Mn

P

S

Cr

Content

0.95-1.05

0.15-0.35

0.20-0.40

≤0.027

≤0.020

1.30-1.65

 (3)GCr15 in other country

  executive standard:

Country

China

US

Janpan

Germany

France

ISO

Grade

GB

AST

JIS

DIN,DINEN

NP,NPEN

ISO630

Bearing steel

Chrome steel

GCr9

51100

SUJ1

 

 

 

GCr15

52100

SUJ2

100Cr6

100Cr6

1

9Cr18Mo

440C

SUS440C

Z100C

D17

 

 

 4.Show you part of our process flow:

  

Cutting of wires,grinding,heat treatment,ploishing.

 5.Package:

plastic bag----box-----carton-----wooden pallet.

6.This is our Plant:

Centerless grinding machine & Cutting machines

7.Quality Control

You should believe the quality of our products,because we have these machines to control our quality.

8.Certificate

 For more informations,please contact with me!

NRA NRB 3*23.8mm needle roller using in machinery



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