MS2M02-B0FNN-KMDL1 by Bosch Rexroth Indramat

The MS2M02-B0FNN-KMDL1 is a compact servo motor manufactured by Bosch Rexroth Indramat within the MS2M Ultra Compact Motors series. It is intended for tight-footprint drive axes where precise position control is necessary in packaging, handling, and small assembly stations. An optical encoder with 23-bit resolution is integrated for accurate feedback, and an electrically released brake is included so that vertical loads remain locked when power is removed.

This motor mounts to a machine plate through a bolt circle of 45 mm, a dimension that fixes the center distance between fastening screws for standard mounting. The brake coil is energized at 24 V DC, matching standard control-cabinet power supplies and eliminating the need for a separate transformer. Under dynamic demand, the rotor can deliver up to 0.95 Nm of torque, while the motor has an IP65 rating that helps protect the housing against dust ingress and low-pressure water jets. Standstill torque reaches 0.32 Nm at a winding temperature rise of 60 K, giving stable holding force for static positioning. The stator winding is optimized for a nominal speed of 3000 rpm, allowing direct connection to Rexroth IndraDrive controllers that operate in the 24 kHz PWM range. Supply electronics must provide a logic voltage between 4.75 V and 5.25 V for the single-turn or multi-turn encoder, and motor cooling relies solely on natural convection through the aluminum frame.

Installation is permitted up to 1000 m above sea level without derating, making the unit suitable for factory floors at moderate elevation. The solid shaft has a diameter of 8 mm with a keyed profile to ensure positive coupling to pulleys or couplings, and the overall weight is only 0.92 kg, which minimizes moving mass on linear slides. M17 quick-lock SPEEDCON connectors simplify wiring, while the double metal lead set protects encoder signals from noise. Airborne sound is limited to 65 dB(A) during rated operation.