B&R 8MSA3M

Technical Specifications

• Cooling Method: Self‑cooling
• Nominal Speed: 3000 rpm typical (variant‑dependent)
• Stall‑torque: Higher than 8MSA3L within frame‑size 3 series
• Feedback Options: Resolver, EnDat encoder
• Degree of Protection: IP65 for shaft‑end and connector
• Shaft Options: Smooth shaft, keyed shaft; optional holding‑brake
• Certifications: CE, UL, UKCA

Functional Features

• Optimized stator‑rotor magnetic‑design for higher continuous‑torque output
• Maintain excellent dynamic‑acceleration performance for cyclic‑load‑operation
• Embedded motor‑parameter chip for automatic drive‑configuration
• Compatible with openSAFETY functional‑safety motion‑control solutions
• Multiple mechanical‑option selections: brake, oil‑seal, reinforced‑bearing, shaft‑form
• Compact‑frame‑size with improved torque‑density

Application Scenarios Material‑handling automation, packaging‑equipment main‑axes, machine‑tool auxiliary‑motion‑axes, converting‑machinery, automated‑logistics‑equipment.

Material Composition

• Housing: Die‑cast aluminum‑alloy cooling‑fin housing
• Rotor: Rare‑earth permanent‑magnet rotor assembly
• Stator: Silicon‑steel‑sheet laminated stator with copper‑wire windings
• Shaft: High‑strength alloy‑steel output‑shaft
• Connector: Shielded industrial servo‑connector assembly

Structural Characteristics Standard square‑flange mounting‑form, longer stator‑stack length versus 8MSA3L for higher torque output. Self‑cooling fin‑structured housing. Non‑drive‑end accommodates feedback‑encoder; optional integrated holding‑brake unit. Rotatable angled cable‑connector.

Working Principle Three‑phase sinusoidal current from servo‑drive energizes stator windings to generate rotating‑magnetic‑field. Magnetic‑field couples with rotor permanent‑magnets to produce mechanical‑torque. Feedback‑device provides real‑time position‑speed signals to drive for closed‑loop position‑velocity‑torque control.

Installation Requirements

• Flange‑mount installation, guarantee mounting‑plane flatness
• Maintain surrounding‑space for natural‑convection heat dissipation
• Adopt B&R‑recommended shielded power‑cable and feedback‑cable
• Operate within allowable shaft radial‑axial‑load limits
• Ensure protective‑earth connection is well‑implemented