8MSA3L.E0-33 B & R Automation
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The B & R Automation 8MSA3L.E0-33 is part of the 8MS Three Phase Synchronous Motors series and features a self-cooling system with a nominal rated speed of 3000 rpm. This motor has a keyed shaft end, comes equipped with a single-turn EnDat encoder with 512 line resolution and ±60 second precision, and a holding brake with 4 Nm of torque. Its connection direction is on the A Side and it allows an installation axial force up to 200 Newtons.
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Product Description:
The 8MSA3L.E0-33 is a three-phase synchronous motor produced by B&R Automation as part of the 8MS Three Phase Synchronous Motors series. Supplied in motor size 3 with length code L, the unit fits compact axes where high torque is required without increasing machine depth. In automated assembly, conveying, or packaging lines, it translates inverter current into controlled mechanical rotation and follows speed or position commands with deterministic response during repetitive industrial tasks. Its compact format makes it suitable for machine sections where rear clearance is limited and cable runs must stay short.
The motor’s nominal operating point is 3000 rpm, and the manufacturer describes its output as having a high relative rated torque, supporting momentary overloads without thermal derating. Cooling relies on a self-cooling design that channels rotor airflow along internal paths, so no external fan or liquid circuit is needed. A built-in brake delivers 4 Nm of static holding force to secure loads after power is removed. Rotor position is detected by an EnDat encoder whose optical disc carries 512 lines, giving the drive high-resolution feedback for closed-loop control. This feedback path supports repeatable motion, steady low-speed behavior, and fast recovery after a controller reset.
For installation, the connectors are oriented on the A-side of the stator housing, which can simplify cable routing inside tight cabinets or along guarded machine frames. The encoder remains accurate within ±60 arcsec and sustains a bandwidth of at least 100 kHz (-3 dB), allowing high-speed interpolation and responsive position updates. Because it is a single-turn device, absolute position is retained over one mechanical revolution, which is suitable for many rotary axes that return to a known reference during normal operation. Up to 200 N of axial force may be applied during coupling without damaging the bearings, and the keyed shaft end helps transmit torque without slip. No oil seal is fitted, so external guarding is recommended when lubricants or coolants are present.
Frequently Asked Questions about 8MSA3L.E0-33:
Q: Does the 8MSA3L.E0-33 motor have a holding brake and what is its torque rating?
A: The 8MSA3L.E0-33 comes equipped with a holding brake that provides 4 Nm of torque.
Q: What type of shaft end does the 8MSA3L.E0-33 synchronous motor use?
A: This motor features a keyed shaft end for secure and precise power transmission.
Q: What is the rated nominal speed of the 8MSA3L.E0-33 motor?
A: The 8MSA3L.E0-33 achieves a rated nominal speed of 3000 rpm.
Q: What encoder technology and resolution are used in the 8MSA3L.E0-33 motor?
A: EnDat single-turn encoder technology with 512 lines and ±60" precision is built into this motor.
Q: Which cooling method does the 8MSA3L.E0-33 synchronous motor utilize?
A: The 8MSA3L.E0-33 is designed with self-cooling to regulate its operating temperature.
