Baldor (ABB) BSM3 849750R Permanent Magnet Synchronous Servo Motor Product Description

Overview

Baldor BSM3 849750R is a BSM3 frame permanent magnet synchronous servo motor from Baldor-Reliance (ABB Baldor) BSM series. BSM3 defines the motor frame series, 849750R is the full OEM part number with custom configuration including winding specification, encoder protocol, holding brake, shaft form, sealing and cable outlet definition. This Baldor servo motor is designed for closed-loop position, speed and torque control, commonly matched with Baldor / ABB ACSM1 servo drives. BSM3 849750R is a legacy motion spare, widely used for machine tool, packaging, material handling and converting production line overhaul and spare‑part replacement of existing BSM servo systems.

Features

Baldor BSM3 849750R adopts ferrite permanent magnet rotor design with low cogging torque and stable torque output for machining and high-precision indexing applications. This Baldor servo motor integrates high-resolution encoder; the encoder type is locked inside the part number 849750R, supporting incremental, EnDat or Hiperface feedback options. BSM3 849750R is equipped with built‑in electromagnetic holding brake for vertical axis load retention when power is removed. The servo motor supports IP65 / IP67 sealing grade and self‑cooled structure, adapted to workshop environments with dust and coolant splash. It supports frequent acceleration and deceleration cyclic operation and can run in position, speed and torque modes coordinated with the matched servo amplifier.

Specs

Baldor BSM3 849750R synchronous servo motor

• Brand: Baldor-Reliance (ABB)

• Series: BSM AC brushless servo

• Model: BSM3

• Full part number: 849750R

• Motor type: PMSM permanent magnet synchronous servo

• Feedback: Encoder defined by part code

• Brake: Built‑in holding brake (per configuration)

• Protection: IP65 / IP67

• Cooling: Self‑cooled

• Mounting: Flange mounting

• Shaft & connector: Defined by suffix code

• Matching drive: ABB ACSM1 / Baldor servo drives

• Standard: CE, cURus

Principle

Baldor BSM3 849750R servo motor receives three‑phase PWM power and motion reference commands from the matched servo amplifier. The rotating magnetic field generated by the stator winding drives the permanent magnet rotor to rotate. The built‑in encoder feeds rotor angle and position data back to the drive to form a high‑speed closed control loop for precise positioning and speed regulation. When servo enable signal is cut off, the holding brake mechanically locks the motor shaft. The drive monitors motor current, encoder signal and winding temperature to trigger overcurrent, overspeed and overheat protection.

Applications

Baldor BSM3 849750R is deployed in CNC machine tools, packaging machinery, gantry handling systems, printing and converting lines and automated assembly equipment. This Baldor servo motor is used for heavy‑duty feeding, cutting, indexing and synchronized conveying tasks. BSM3 849750R fits equipment maintenance and spare replacement of legacy Baldor BSM3 series servo motors.

Installation & Maintenance Notes

Follow official Baldor BSM servo hardware manual during installation of BSM3 849750R. Align the coupling carefully to avoid radial and axial overload that damages bearing and encoder. Use shielded dedicated power and encoder cables and ensure reliable EMC grounding. For vertical axis applications, test brake release and holding function separately. Back up servo gain, inertia and safety parameters before replacement. Confirm the full part number 849750R before spare‑part swap‑out to verify encoder protocol, brake function, winding voltage and mechanical dimensions compatibility.