1.The details of this kind of motor shaft
2.Our products
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
Cylindrical roller
Kinds of needle roller 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:
China GB/T18254-2002/Japan JIS G4805:1991
USA ASTM A295:1998 /Unified digital code:B00150
Country | China | US | Janpan | Germany | France | ISO |
Grade | GB | AST | JIS | DIN,DINEN | NP,NPEN | ISO630 |
Bearing steel Chrome steel | GCr9 | 51100 | SUJ1 |
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GCr15 | 52100 | SUJ2 | 100Cr6 | 100Cr6 | 1 | |
9Cr18Mo | 440C | SUS440C | Z100C D17 |
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3.Quality control
4.Package
5.certification
For more information,please contact with me !
