Worm Gears

Worm gears are used where very large speed reductions are required. This is a shaft with a thread like a screw. This connects at 90° to a large gear (the thread shaft points along the outside edge of the larger gear). Each time the shaft spins one revolution, the gear turns forward by only one tooth. If the gear has 50 teeth, this creates a gear ratio of 50:1. The worm can drive the worm gear round, but the worm gear cannot drive the worm.

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Description Price Module Material Number of Starts Overall Length Overall Diameter Pitch Diameter Gear Direction Pressure Angle
RS庫存編號 521-6890
BrandRS PRO
HK$100.17
單位
1 Steel 1 32mm 18mm 16mm RH 20°
RS庫存編號 521-6907
BrandRS PRO
HK$103.11
單位
1 Bronze, Steel 2 32mm 18mm 16mm RH 20°
RS庫存編號 521-8559
BrandRS PRO
HK$100.17
單位
0.8 Steel 1 30mm 15.6mm 14mm RH 20°
RS庫存編號 521-6812
BrandRS PRO
HK$103.11
單位
0.8 Bronze, Steel 2 30mm 15.6mm 14mm RH 20°