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  • Users: Dorfer
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  1. Dorfer

    Spur gear wear

    I have a pinnion of 21 teeth, 3 dia. pitch, 20 degree pressure angle, RC 28-32, 3" face width, climbing a rack which is RC 48-52 4130 alloy steel. The stroke on the lift is 40" 2x every 5 minutes is the travel at 10"/sec. The four pinions carry approx. 9,000# each in the front and 6,000# each in...

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