8MSA7L.E1-M4 B & R Automation
Wake Industrial LLC is not an authorized distributor of this product.
No Tariffs On US Orders- Straightforward Pricing: No Rush Fees, No Credit Card Fees
The B & R Automation 8MSA7L.E1-M4 is a three phase synchronous motor from the 8MS Three Phase Synchronous Motors series. It features a self-cooling system and multi-turn EnDat encoder technology with a resolution of 512 lines and precision of ±60 arc seconds. The motor allows for a permitted axial installation force of 500 Newtons and supports 4096 recognizable revolutions.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The 8MSA7L.E1-M4 is a synchronous motor manufactured by B & R Automation within the 8MS Three Phase Synchronous Motors series. In automated production cells, it acts as a rotary actuator that transforms electrical input from a matched inverter into controlled shaft torque and speed. The motor supports coordinated motion sequences that demand rapid response and precise positioning, making it suitable for packaging, material handling, and assembly axes that operate continuously under industrial conditions.
This model uses a self-cooling housing that conducts heat to the ambient air, so no external blower or liquid cooling circuit is required. The integrated encoder maintains signal integrity at frequencies of at least 100 kHz at -3 dB, allowing the drive to capture fine timing edges at high shaft speeds. Its angular accuracy of ±60 arcseconds limits cumulative error during multi-axis interpolation, while a resolution of 512 lines per mechanical revolution provides dense incremental pulses for velocity control. Position data is transmitted through the EnDat serial protocol, which simplifies cabling and supports electronic motor data storage. The sensor provides multi-turn absolute feedback, so it reports shaft position across several revolutions without relying on battery backup. The motor has a large relative rated torque, supporting demanding loads that require a high level of continuous torque.
The motor has a frame size of 7, which establishes the corresponding flange diameter and bolt pattern, while the L length designation provides an extended active stack for greater torque density. During assembly, the shaft can tolerate axial press forces of up to 500 N, allowing couplings and gears to be fitted without damaging the bearings when proper installation procedures are followed. The encoder distinguishes 4,096 complete revolutions, providing absolute position information for applications with long travel distances or repeated rotary movement. Its extended frame can accommodate applications with sustained mechanical loading while the self-cooling design removes heat without auxiliary equipment. Multi-turn position tracking also allows the connected drive to identify the axis location after a power cycle without requiring a new homing movement.
