翻倍炸金花

球面关节轴承

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SB 型使用最广泛的系列。球面接触部的宽度大,适用于重负荷。外环采用 2 处分割,易于容纳内环。
SA1 型这是在欧洲普遍使用的球面轴承类型。外环由 1 处分割,与 SB 型相比宽度和厚度都较小,可用于狭小空间。

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