M.1015.7881 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen M.1015.7881 belongs to the FSM Brushless Servo Motors series. It has a continuous stall torque of 14.1 Nm, a peak torque of 31.6 Nm, and operates at a motor voltage of 230 VAC. The servo motor features a brake coil voltage of 24 VDC with a holding torque of 22.6 Nm, a shaft diameter of 35 mm, and an overall length with brake of 326 mm.
Internal Product Review
The M.1015.7881 is a Kollmorgen FSM brushless servo motor that stands out with 14.1 Nm continuous stall torque and 31.6 Nm peak torque. A 24 VDC brake coil paired with 22.6 Nm holding torque supports dependable stopping and secure load retention in servo axes. An excellent motor selection for motion systems requiring strong dynamic response and reliable braking performance.
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Product Description:
The M.1015.7881 brushless servo motor is built by Kollmorgen within the FSM Brushless Servo Motors series. It serves as the prime mover for precision axes in industrial automation, converting sinusoidal drive output into accurate rotary motion while an integrated electromechanical brake secures the shaft when power is removed. By combining high torque density with feedback compatibility, the unit supports repetitive indexing, contouring, and tension control duties on packaging lines, pick-and-place stations, and electronic assembly platforms.
The motor sustains a continuous stall torque of 14.1 Nm, enabling static load support without excessive heating, and it can deliver a peak torque of 31.6 Nm for short acceleration bursts. The rated stator voltage is 230 VAC, allowing operation with compatible servo drives supplied from common three-phase mains. Electromagnetic conversion efficiency is reflected in its torque constant of 0.71 Nm/A, while the rotor inertia of 0.007 kg·m² balances rapid speed changes with load stability. The phase windings have an inductance of 3.3 mH and a resistance of 0.51 Ω. These values affect current-loop bandwidth and drive sizing.
A voltage constant of 86 V/1000 rpm establishes the back-EMF level used by the drive for speed estimation. A shaft diameter of 35 mm pairs with a 36.5 mm extension for coupling to rigid hubs, and the brake provides a holding torque of 22.6 Nm to secure vertical or overhung loads. Brake backlash does not exceed 29 arcmin, and the brake circuit draws 1.13 A DC at 24 V DC during release. The overall motor length with the brake is 326 mm. The housing has a thermal resistance of 0.45 °C/W, supporting continuous operation when the motor is mounted to a conductive frame.
