| Brand Name | ChongDe |
| Place of Origin | China |
| Model Number | SK40-ER20 |
Material:20CrMnTi
Hardness:HRC56-58carburizing deep > 0.8,Taper accuracy tolerance < AT3
long cryogenic treatment and heat aging treatment, improve the precision and the stability of the size
The default dynamic balance G6.3-12000 RPM, but fine do dynamic balance G2.5-15000 RPM, 20000 RPM
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