Product Description:

The 8MSA3L.E1-I6 is a three-phase synchronous motor produced by B & R Automation for the 8MS Three Phase Synchronous Motors series. It serves as a rotary drive element in automated machinery that requires high positioning accuracy and rapid speed changes. The unit belongs to motor size 3 and length code L, so it fits applications where a compact frame must deliver high torque relative to its size. A smooth shaft end simplifies direct coupling to gearboxes or pulleys, and the housing supports operation without forced ventilation.

Electrical and feedback features determine its control behavior. Power and feedback conductors exit on the B-side, allowing cable management on one face of the machine frame. Heat removal relies on self-cooling, so no external fan wiring is needed. The EnDat multi-turn encoder supports signal bandwidths of ≥ 100 kHz at the −3 dB point, maintaining reliable position data in high-speed servo loops. Its angular precision of ±60″ limits accumulated error during continuous interpolation, while the scale provides 512 lines per mechanical revolution for fine incremental feedback. The encoder stores the absolute position across power cycles, eliminating the need for homing routines at startup.

At its rated operating point, the rotor can reach 6000 rpm without exceeding its design limits. The internal counting logic recognizes 4096 full turns, providing enough range to track long-travel axes without counter overflow. During assembly, the shaft may be pressed or pulled with up to 200 N of axial force. The motor has a smooth shaft, so torque transmission depends on a friction-based clamping connection rather than engagement with a key. The motor is supplied without a holding brake, so an external brake or another retention method is required when an unpowered axis must remain stationary. It also has no oil seal, making external fluid protection necessary when the shaft is exposed to lubricants or other liquids.