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Shaft end typeShaft end processing code and featuresLegendCodeFeatureFixed end(F)FCoupling end + locking thread + bearing positionFMCoupling end (axial threaded hole) + locking thread + bearing positionFDCoupling end (milled single flat) + locking thread + bearing positionFHCoupling end (milled doub
Read MoreInch trapezoidal lead screw specification tableNominal diameter (mm)Lead (mm)Pitch (mm)Number of threadLeft handHeight of thread(mm)Outer diameter(mm)Pitch diameter(mm)Bottom diameter(mm)Maximum machining diameter MaxMinMaxMinMaxMin4.75(3/16-40)0.6350.6351√0.324.754.674.384.244.123.893.9
Read MoreMetric trapezoidal screw specification tableNominal diameter (mm)Lead (mm)Pitch (mm)Number of threadLeft handHeight of thread(mm)Outer diameter(mm)Pitch diameter(mm)Bottom diameter(mm)Maximum machining diameter MaxMinMaxMinMaxMin20.50.51√0.272.001.931.691.581.501.301.4830.50.51√0.273.002
Read MoreLead screw friction coefficient table
Read MoreTrapezoidal screw pair (Tr thread, tooth Angle 30°) is a power transmission device. Generally according to the German standard DIN103 (DIN103 has been adopted by ISO as an international standard). The counterpart is the ACME threaded lead screw pair (tooth Angle 29 °) in British system. Generally us
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