Product Description:

The 00-00907-999 is a brushed permanent-magnet DC motor produced by Kollmorgen within the ServoDisc Pancake DC Motors series. This flat-profile motor is intended for direct-drive positioning stages, electronic assembly tools, and similar automation axes where low inertia and a quick torque rise are required. By generating torque proportional to the applied current, it converts electrical control signals from a drive into mechanical rotation for servo loops that require bidirectional speed control and repeatable accuracy.

At a rated terminal voltage of 22.9 V, the motor reaches a rated speed of 3000 rpm while drawing a continuous current of 8.63 A. Under these conditions, it produces 102 W of mechanical power and has a torque constant of 6.09 oz-in/A, so every ampere increases shaft torque by that amount. The armature resistance measures 0.660 Ω, limiting the current surge at startup, while the separate terminal resistance of 0.850 Ω includes brush and lead contributions. A back-EMF constant of 4.50 V/krpm indicates the voltage generated per thousand revolutions, allowing drives to estimate speed from feedback. Continuous stall torque is 37 oz-in, and the motor can sustain 46 oz-in at 25 °C without exceeding its thermal rise, supporting steady loads during holding or low-speed operation.

For short-duty bursts, the rotor can supply 434 oz-in of peak torque, giving machines additional capacity for rapid acceleration before settling at the rated operating point. Dynamic overspeed is avoided by observing the maximum recommended limit of 6000 rpm. Position and velocity loops are assisted by an optional optical encoder that provides a resolution of up to 2540 CPR and supports signal rates of up to 100 kHz, enabling high-bandwidth control in tight spaces. The pancake frame is only 1.86 inches long and carries a shaft with a diameter of 0.4995 inches. Its compact dimensions allow it to fit directly into low-profile gear heads where minimal overhang is desirable.