GAM1A4005F0CNK2 Sanyo Denki
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The Sanyo Denki GAM1A4005F0CNK2 belongs to the G SANMOTION AC Servo Motors series and features a single-turn absolute encoder. This servo motor has a 40 mm square flange, 8 mm shaft diameter with keyway style, and offers IP67 ingress protection. It provides a rated output of 50 W, rated speed of 3000 min^-1, and weighs 0.57 kg.
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Product Description:
The GAM1A4005F0CNK2 is an AC servo motor produced by Sanyo Denki for the G SANMOTION AC Servo Motors series. This compact unit couples a permanent-magnet rotor with fine-resolution feedback so drive electronics can command precise velocity and position loops. In automated machinery, it positions small tooling heads, dispensers, or indexing tables, providing closed-loop motion where space and payload are limited.
The mounting interface uses a square 40 mm flange, allowing the housing to bolt directly to miniature gearboxes or aluminum extrusions without adapter plates. The motor has an IP67 protection rating, which seals the stator against dust ingress and temporary water immersion during washdown. The motor delivers a continuous mechanical power output of 50 W. At the rated speed of 3000 rpm, this output corresponds to a continuous shaft torque of 0.159 N·m. A single-turn absolute encoder mounted on the rear transmits position data for one complete revolution to the servo drive, eliminating homing routines after power loss. The 8 mm diameter shaft extends 25 mm beyond the bearing face and has a keyway that secures pulleys or couplings. At this operating point, copper losses and magnet heating remain within the thermal limits of the G SANMOTION design, supporting continuous duty cycles in compact, sealed enclosures.
For short bursts, the rotor can resist stall loads up to 0.56 N·m, giving the axis additional torque during acceleration or when overcoming static friction. Electrical loss is limited by a winding phase resistance of 7.0 Ω, while the torque constant of 0.244 N·m/Arms indicates the proportional relationship between drive current and developed torque during control tuning. The aluminum frame and laminations weigh only 0.57 kg, reducing reflected inertia and allowing higher servo bandwidth on pick-and-place gantries. Because no oil seal is fitted at the output shaft, the design reduces drag and should be shielded from lubricant spray with external covers when installed in fluid-rich environments.
