Product Description:

The JR16M4CH-1 is a frameless DC motor produced by Kollmorgen within the ServoDisc Pancake DC Motors series. As a low-profile armature intended for direct coupling to precision gearheads or rotary tables, the unit provides bidirectional torque under closed-loop servo control and is often selected for packaging equipment, pick-and-place heads, and other industrial axes that benefit from minimal axial length.

This model is energized at a rated terminal voltage of 166.0 V and draws a rated continuous current of 7.8 A while spinning at its rated speed of 3000 RPM. Under those conditions the shaft can deliver 1114 W of mechanical power, achieved through a torque constant of 69.00 oz-in/A that links armature current to output torque. Continuous stall capability reaches 32 lb-in, allowing the motor to hold loads without motion when properly cooled. An armature resistance of 1.200 Ω limits starting current, while a terminal resistance of 1.400 Ω reflects lead and brush contributions. The 51.00 V/KRPM back-EMF constant enables the drive to estimate speed from generated voltage, and the rated torque at 25 °C is 31 lb-in, indicating only minor derating from thermal rise.

The flat geometry—7.38 in in diameter and 4.50 in long—keeps envelope requirements modest, and the assembly weight is 17.5 lb, easing gantry or Z-axis mounting. Dynamic response is helped by a moment of inertia of 0.075 oz-in-sec², so acceleration can be commanded without large current surges. During transient events the armature withstands a peak torque of 336 lb-in, and safe operation is maintained up to a maximum recommended speed of 5000 RPM. Together these mechanical parameters complement the electrical ratings above, giving designers clear limits for velocity control, load coupling, and thermal management in demanding automation tasks.