Stock Drive Products & Sterling Instrument - SDP/SI 72 DP, 80 Teeth, 20° Pressure Angle, Anti-Backlash Spur Gear S1M56A-F072S080

The S1M56A-F072 series comprises anti-backlash spur gears with 72 diametral pitch and 20° pressure angle, designed for precise motion control. Gears are made from 303 stainless steel or anodized 2024-T4/T351 aluminum alloy, with hubs and torsion springs of 303 and 302 stainless steel respectively. The part S1M56A-F072S080 has 80 teeth, a 0.2498 inch bore, and an outside diameter of 1.139 inches. The hub requires a clearance fit of 0.0001 to 0.0008 inch with the shaft. The face width is 0.104 inch. The series is engineered for use with controlled shaft tolerances and excludes other pressure angles or bore sizes without special order.