I would like to know what the retention force is for automatic drawbars on machine spindles by taper #50, 45, 40, 30, NMTB and HSK 50, 63 and 80. I have a pull force gauge and was told it is out of spec and needs to be calibrated. How much can the actual force vary from the spec. + or - lbs. of force?
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Power drawbar retention force specifications.
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