Product Description:

The M-203-B-93-027 is a brushless servo motor produced by Kollmorgen within the M Goldline Servo Motors series. As a rotary actuator designed for closed-loop motion axes, the unit converts electrical power into controlled torque and speed for indexing tables, pick-and-place heads, and packaging machinery. Its rare-earth magnets and integrated feedback allow precise positioning while maintaining compact dimensions that suit space-limited automation cells. The motor is intended to bolt to gearheads or load shafts, supplying motion profiles that synchronize with PLC-based drives.

Key electrical parameters determine how the motor pairs with a digital drive. A back electromotive-force constant of 49 Vrms/kRPM indicates the voltage returned per thousand revolutions and guides bus voltage selection. Sustained load is handled through a continuous stall torque of 2.44 N-m while drawing 3 A RMS of phase current. The winding presents a line-to-line resistance of 6.98 Ω and an inductance of 68 mH; these values influence current ripple, drive PWM frequency, and heating. Insulation withstands up to 250 V RMS between phases, allowing operation from typical 230 V class amplifiers. Four internal poles generate the rotating field that produces torque.

Dynamic events are accommodated by a peak stall torque of 7.38 N-m that can be reached when 9.6 A RMS is supplied for short intervals. The steel rotor’s inertia is 0.000836 kg-m², enabling rapid acceleration without excessive overshoot, while static friction is 0.08 N-m and viscous damping is 0.007 N-m/kRPM to minimize hunting at low speed. Thermal design is characterized by a resistance of 0.81 °C/W between windings and case and a thermal time constant of 18 min; together they predict temperature rise under intermittent cycles and help set safe duty factors. A torque constant of 0.81 N-m/A RMS keeps current-to-torque conversion linear across the speed range, supporting precise servo regulation.