2*3.8 mm needle roller using in Nadellager

1. High precision 2. Smooth surface 3. Good quality and reasonable price 4. Can meet customer's requirement

We are manufacture of cylindrical rollers and needle rollers.

1.The details of 2*3.8mm nadellager 

Material standard:GCr 15   Diameter:2mm         Length:3.8mm 

Tolerance of diameter :0/-0.003

Tolerance of length: 0/-0.2

2.The details of our products: 

Table1

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
Surface finish	Within 0.0001mm
Diameter	0.7mm to 80mm
Length	2mm to 150mm
Hardness standard	HRC58—65
Grade	G1,G2,G3,
Chamfer	0.1 ,0.2,0.3
Roundness	within 0.001mm
USE	Widely be used in machinery
Certificate	ISO 9001:2008

 The shape of needle roller

 

Table 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

3.About material-----GCr15 

(1)What's GCr15?

GCr15 is the mostly widely used highcarbon  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

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 flows:

5.Package 

6.Our plant

 7.Quality control

I think you should believe the quality of our product,because we have these:

8.Certificate

 For more informations,please contact with me!

2*3.8 mm needle roller using in Nadellager