MSM215-221-304-S-0KA Kollmorgen
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MPN: M.1302.1216
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The MSM215-221-304-S-0KA is a brushless servo motor manufactured by Kollmorgen as part of the MSM Brushless Servo Motors series. It delivers a continuous torque of 25 Newton meters and a peak torque of 70 Newton meters, with a rated speed of 3000 RPM and a voltage class of 460 Volts. The motor features a single-turn high resolution feedback type and has a pole count of 6.
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Product Description:
The MSM215-221-304-S-0KA is a brushless servo motor manufactured by Kollmorgen within the MSM Brushless Servo Motors series. In automated machinery, this motor supplies closed-loop rotary motion for positioning axes, conveying sections, or indexing tables. These applications require rapid acceleration and precise velocity control.
The motor can sustain a continuous shaft output of 25 Nm, providing steady torque for holding or traverse duties without overheating. A torque constant of 1.36 Nm/A links commanded current to delivered torque, simplifying drive tuning. During acceleration bursts, the windings accept a maximum current of 65.1 A peak, allowing the rotor to reach 70 Nm of peak torque for short periods. Magnetic energy storage is influenced by a winding inductance of 15.8 mH; this value shapes current rise time and affects drive filter settings. Copper losses are tied to a winding resistance of 0.76 Ω, which converts a portion of the input power into heat that must be removed through the stator housing.
A rotor inertia of 0.0074 kg·m² balances quick speed changes with stable motion under load. The rated speed reaches 3000 rpm, matching many gearhead and direct-drive requirements in packaging, assembly, and material-handling equipment. Operation on a 460 V bus keeps current manageable for long cable runs and reduces the required inverter capacity. Six poles interact with the stator field to provide smooth commutation, and the single-turn, high-resolution feedback device reports the absolute position during each revolution. The bearing set supports radial loads up to 101 kg at 3000 rpm, allowing the motor to accommodate pulley or belt tension without external supports. Mechanical coupling is handled by an M12 × 1.75 mm shaft thread cut to a depth of 28 mm. The stall current is 20.5 A peak, which establishes the continuous RMS sizing point for the drive.
