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    Information required when ordering gear hobs

    2021-08-27 11:19:57 jiangxingTools 508

    Information required when ordering gear hobs

    gear hob.png

    GEAR DATA
    ? Normal module/OP
    ? No. of teeth
    ? Normal pressure angle
    ? Helix angle and hand
    ? Outside diameter
    ? Root diameter
    ? Amount of tip chamfer- lf applicable
    ? Root-fiat/full fillet
    ? Tip relief details- lf applicable
    ? DOP or MOT sizes at hobbing and finishing stage
    ? Material and hardness at hobbing stage

    types of gear hobs.png

    HOB DATA

    ? Overall size - OD x Length x Bore
    ? No. of starts
    ? Hand ofthreads
    ? Type - Finishing/preshave/pregrinding/roughing
    ? Type of profile - Nontopping/semitopping/full topping
    ? Class of accuracy
    ? Amount of shaving/grinding allowance wherever applicable

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