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Worm reduction gearboxes
Worm reduction gearboxes
Crown Electric Company manufactures worm reduction gearboxes with ISO specifications. A comprehensive range is available. Reduction gear unit are manufactured in different sizes in adopter types as well as solid foot mounting type to transmit minimum 0.05 HP and maximum 90 HP with selection of correct sizes. These are normally available in reduction ratio of 5:1 to 70:1. The worm is solid with shaft made of high grade alloy steel so as to give hard wear resisting surface duly case hardened and super finished. The bearing and oil seal journals are accurately, cylindrically ground to give smooth running. The worm wheel is made of centrifugally cast phosphor bronze rim shrunk and keyed on cast iron center block on bigger unit and solid casting for smaller units. The teeth are hobbed on gear hobbing machine. Gear housing is made of close grain graded cast iron. The ball or roller bearings are used in worm wheel with ample capacity so that is can take journal and thrust loads.