Product Description:

The 8MSA3M.E3-43 is a three-phase synchronous motor produced by B&R Automation and supplied within the 8MS Three Phase Synchronous Motors series. It converts electrical energy from a matched servo drive into rotational motion for positioning axes, conveyors, or light-duty spindles used throughout industrial automation. Its compact servo-motor design supports precise speed and position control when paired with a compatible drive and feedback system. This arrangement suits automated equipment that requires repeatable motion in a limited installation space.

At its rated operating point, the unit reaches 6000 rpm, enabling high surface speed on compact gear stages. The inductive encoder maintains feedback bandwidth up to ≥ 6 kHz (-3 dB), so current loops remain stable during rapid transients. Position granularity starts with 32 lines, and interpolation inside the control system yields 4096 distinguishable positions per revolution, each reported with a precision of ±400 counts. During installation, the shaft can tolerate up to 200 N of axial force, which helps protect the bearings from accidental preload. The encoder uses a multi-turn architecture that preserves absolute position after power loss, while relative torque is classified as medium for general-purpose motion tasks. Size 3 construction and length code M give the motor balanced rotor inertia for responsive yet smooth acceleration.

Thermal management relies on a self-cooling housing that dissipates heat through the stator surface, eliminating external fans. Power and feedback connectors are oriented on the A side, which can simplify cable routing inside compact machines. Mechanical coupling is handled by a keyed shaft end that transmits torque without slip. Position feedback originates from the EnDat Inductive sensor system, which resists dust and oil vapor. The motor is shipped without a holding brake, so vertical axes must be secured externally, and it lacks an oil seal, limiting use to clean, dry environments.