Haydon Kerk Pittman (AMETEK, USA) G40A is a Ø40 mm high-torque spur gearbox with ratios 4:1-864:1 in 1-4 stages, 14.12 Nm (2000 oz-in) max load across the range, efficiency 0.65-0.90, 255.1-425.2 g and 35.6-58.4 mm long; official gearmotor length tables cover DC040B/DC054B brushed and EC057C brushless pairings for robot joints, AGV drives and heavy positioning.
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