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Compatible chain: No. 40Chain pitch: 12.7mmRoller link inner width: 7.95mmTooth width: 7.2mmNew JIS key groove specificationNumber of teeth: 20Outer diameter (mm): 88Shaft hole diameter (mm): 25Boss diameter (mm): 67 老板长度(mm):25
用于机械结构的碳钢热处理:尖端上的诱导硬化
760g
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