Product Description:

The XSM115-55-352-M-0AA is a brushless servo motor built by Kollmorgen for the XSM Centurion Servo Motors series. With a frame size of 115 mm, it fits mid-torque drive stages, and its shaft is supplied without a keyway to accommodate couplings that rely on friction collars. Multi-turn feedback is integrated so controllers can recover the absolute position after power is restored. No brake is installed, which means an external holding method is required when the axis must remain locked at rest. The unit provides precise closed-loop motion for packaging machines, robotics, and indexing tables.

At the mechanical interface, the motor can sustain an axial load of 51 kg and a maximum radial load of 84 kg at 1,000 rpm, allowing direct belt or pulley mounting without separate support bearings. The rated shaft output reaches 55 in-lb of continuous torque, and the windings permit a top speed of 3,500 rpm, providing a wide constant-power range for variable-speed duty cycles. The housing weighs 5.5 kg, which helps limit the mass added to moving carriages. Its phase resistance is 1.3 Ω, establishing the base current requirement for drive sizing. The shaft is suitable for applications that use direct coupling or belt-driven transmission while remaining within the stated axial and radial load limits.

The motor has a torque constant of 0.60 Nm/A, so each ampere supplied by the amplifier produces a proportional amount of shaft torque. The windings are designed for a bus voltage of 230 V, and the generated back electromotive force follows a voltage constant of 76 V/krpm. These electrical values help match the motor to common servo drives without requiring an additional transformer. A winding inductance of 7.5 mH limits current ripple during high-frequency pulse-width modulation, while a rotor inertia of 0.00038 kg·m² supports rapid acceleration without causing control-loop instability. An M6 × 1.0 mm shaft thread with a depth of 16 mm provides a secure attachment point for thrust washers or encoder discs.