Lead screw is the main part in lifting or moving. Normally they were made out of alloy steel with balance of strength and toughness. The teeth of threads are designed standard trapezoid tooth for better matching with carrier with nuts. Mulitiple starts and various pitches are avaiable for supporting different rotational speed and torque for variouis application.Bearing shaft with tight tolerances to ensure long useful life of bearing which extend to whole unit.
