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  • Users: jchinyut
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  1. jchinyut

    Torque reduction for castings- Rule of thumb

    For example: A 1 1/2" SAE grade bolt has a torque value of 1910 ft-lbs when using the Machinery handbook formula: T= 10* where * is b+mlogd m= 2.965, b= 2.759 and d= 1.5 What would be the reduction of torque values if used to bolt two casted pieces one BS 1452 Grade 17 and the other BS 4360...
  2. jchinyut

    Torque values for BSF threads

    I am presently reassembling a reduction gearbox from a 11 MW GEC gen set assembly. The genset consists of a Rolls Royce Avon gas generator, GEC power turbine, MWD gearbox and GEC generator. The bearing caps are held in place by 1/ 1/2" and 1 1/4"BSF studs. There are no present markings on the...

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