Sumitomo Drive Technologies A9R40BT Servo Motor

Sumitomo A9R40BT Reversible Motor is a 40 W single‑phase induction motor from Sumitomo Drive Technologies’ ASTERO family, designed for compact automation tasks that require bidirectional rotation without a servo drive. This capacitor‑run (condenser) motor is available in multiple voltage variants: A9R40A (1ph 100 V, 15.0 µF, DMF-251506), A9R40B (1ph 110 V, 12.0 µF, DMF-251206), A9R40C (1ph 200 V, 3.5 µF, DMF-45355), and A9R40D (1ph 220 V, 3.0 µF, DMF-45305); frame dimensions vary by variant (for example, A9R40A measures about W50 × T25 × H40 mm, while A9R40B provides roughly W48 × T21 × H33 mm). The BT designation identifies the reversible motor within the A9R40 family, and some configurations are listed with a terminal box (rubber‑bush type). These compact motors are suited to light‑duty applications and can be paired with small gearboxes or drives where bidirectional operation is needed without a servo system.