Product Description:

The T406T-012 is a DC brush servo motor built by Sanyo Denki as part of the T SANMOTION Servo Motors series. It couples with compact servo drives to generate precise shaft rotation in packaging machines, semiconductor handlers, and light material-handling axes. The motor converts commanded current into regulated mechanical power at the load, supporting accurate motion across repetitive operating cycles.

At the electrical terminals, the armature inductance is 4.4 mH, a value that shapes current rise time and affects how aggressively the drive can modulate torque. The winding resistance is 11.8 Ω, which establishes copper losses and the steady-state thermal load during continuous operation. Nominal performance is reached when the drive supplies 70 V to the armature and limits current to 1.4 A, yielding rated electromagnetic output without exceeding temperature limits. Under these conditions, the shaft turns at 3000 rpm, matching the indexing requirements of many small-frame servo stations while remaining below the commutation limits imposed by the brushes and tacho generator.

The torque profile supports a continuous stall torque of 0.20 N·m and a rated running torque of 0.19 N·m, with short bursts up to 1.2 N·m for acceleration or disturbance rejection. The maximum mechanical speed reaches 5000 rpm, providing headroom for overspeed recovery and field weakening when an application requires a wider speed range. The motor produces torque in proportion to current through a torque constant of 0.177 N·m/A, simplifying drive tuning because linear behavior is maintained across the usable operating range. A mechanical time constant of 4.1 ms supports rapid speed settling, while the 60 W rated output balances power density against thermal rise. Feedback from the integrated tacho generator provides 3 V per 1000 rpm with 2% ripple for closed-loop velocity control. A minimum load resistance of 10 kΩ protects the tacho circuit, and the 41 mm frame diameter supports installation in confined spaces.