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  1. Tricky070

    Desirable hardness differential

    I have a pin (300mm diameter) running in a bush 25mm thick. rate of rotation is around 10rpm. Load is around 300-400 tonne. Yes heavy. The wear rate is currently an issue, pin is around 600HB. Question is what is the optimal hardness of the bush?. At the moment i favor a hardness differential...

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