行星齿轮及太阳齿齿轮材料采用高级之镍铬钼合金钢（SNCM220），切削加工后，经渗碳热处理至硬度57~60HRC，在进行齿面研磨，确保齿轮精度在DIN6级以内，比只有表面的氮化处理，独得最佳的耐磨耗和耐冲击韧性，寿命更长。
The planetary gear and sun gear are manufactured from high quality Nl-Cr-Mo alloy steel (SNCM220), precision machined and carbunzed to hardness 57-60HRC. Precision teeth grinding assures gear accuracy reaches DIN6 class. It provides better wear resistance, impact resistance and longer service life than gears with only surface nitrided.
發貨
一年
13%
20年
