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NJ230类型：圆柱滚子轴承
NJ238类型：圆柱滚子轴承
NJ256类型：圆柱滚子轴承
NJ232类型：圆柱滚子轴承
NJ238R类型：圆柱滚子轴承
NJ2216R类型：圆柱滚子轴承
NJ234R类型：圆柱滚子轴承
NJ240R类型：圆柱滚子轴承
NJ2215R类型：圆柱滚子轴承
NJ240类型：圆柱滚子轴承
NJ2218类型：圆柱滚子轴承
NJ2216类型：圆柱滚子轴承
NJ248类型：圆柱滚子轴承
NJ2220R类型：圆柱滚子轴承
NJ2217R类型：圆柱滚子轴承
NJ244类型：圆柱滚子轴承
