Product Description:

The JR16M4CH is a flat-profile brushed DC servo motor produced by Kollmorgen within the ServoDisc Pancake DC Motors series. The disc armature construction shortens the axial length while providing a wide rotor diameter, making the unit suitable for compact stages that still require high torsional output. When integrated with a servo amplifier, the motor drives indexing tables, pick-and-place heads, and other precision axes by converting electrical energy into controlled rotational motion.

At its nominal operating point, the motor is energized at 127.0 V, draws 9.5 A, and spins at 3000 rpm while delivering 1036 W of mechanical power. The armature resistance of 0.940 ohm helps limit inrush current and determines the voltage drop across the windings during continuous operation. At zero speed, the motor can continuously produce 31 lb-in of stall torque without exceeding its thermal limit. These electrical and mechanical values help establish the power requirements for a compatible servo amplifier in positioning, indexing, or conveyor applications.

For short transients, the magnetic circuit can develop 326 lb-in of torque, supported momentarily by the drive’s peak current rating of 100 A. Dynamic performance is aided by a 39.00 V/krpm back-EMF constant, which provides predictable voltage feedback for speed regulation. The rotor inertia is 0.084 oz-in-sec², allowing the motor to accelerate rapidly in responsive motion systems. A mechanical time constant of 3.15 ms reflects the quick response of the lightweight disc armature. The motor supports speeds of up to 5000 rpm without overspeeding the armature. Its torque constant is 52.80 oz-in/A, which converts amplifier current into shaft torque. Rated load torque decreases from 29 lb-in at 25 °C to 26 lb-in at 40 °C as the operating temperature rises. The motor weighs 17.5 lb, allowing installation on moving carriages where overall machine weight must remain controlled.