B&R 8MSA4L

Technical Specifications

• Cooling Method: Self‑cooling
• Frame Size: Size 4 8MS‑series motor
• Nominal‑speed Range: 3000 rpm / 6000 rpm (model‑variant‑dependent)
• Feedback Options: Resolver, EnDat 2.1 / EnDat 3 encoder
• Degree of Protection: IP65 for shaft‑end and connector interface
• Shaft Options: Smooth shaft, keyed shaft; optional spring‑type holding‑brake
• Certifications: CE, UKCA, UL component‑certification

Functional Features

• High‑torque‑density magnetic‑circuit design for heavy‑load dynamic‑operation
• Low‑cogging‑torque characteristic for stable‑low‑speed‑running performance
• Embedded motor‑data chip supporting automatic drive‑side parameter‑loading
• Supports openSAFETY safety‑motion‑control functions
• Rich mechanical‑configurable‑options: brake, oil‑seal, reinforced‑bearings, shaft‑type
• High‑energy‑efficiency design for long‑cycle‑production‑scenarios

Application Scenarios Heavy‑duty packaging‑machinery, gantry‑type automation‑equipment, metal‑forming‑auxiliary‑axes, large‑format printing‑machines, automated‑warehouse handling‑systems.

Material Composition

• Housing: Aluminum‑alloy die‑cast housing with cooling‑fins
• Rotor: High‑energy‑product rare‑earth permanent‑magnet rotor
• Stator: Laminated silicon‑steel‑sheet stator with heavy‑gauge copper‑windings
• Output‑shaft: High‑strength alloy‑steel shaft
• Connector: Metal‑shielded industrial servo‑connector assembly

Structural Characteristics Size‑4 standard square‑flange mounting‑structure. Self‑cooling fin‑equipped aluminum housing. Non‑drive‑end installs feedback‑encoder assembly; optional integrated holding‑brake module. Rotatable angled servo‑connector for flexible‑cable‑layout.

Working Principle Servo‑drive outputs three‑phase sinusoidal current to stator windings to build rotating‑magnetic‑field. Interaction between stator‑magnetic‑field and rotor permanent‑magnets generates mechanical‑driving‑torque. High‑resolution feedback‑sensor transmits position‑speed‑information to drive unit to realize closed‑loop high‑precision‑motion‑control.

Installation Requirements

• Mount via standard flange‑mount holes; mounting‑surface flatness requirement must be satisfied
• Keep sufficient surrounding‑clearance for natural‑convection‑cooling
• Deploy matched shielded power‑cable and feedback‑cable specified by manufacturer
• Strictly follow allowable shaft radial‑axial‑load‑parameters
• Reliable protective‑earth connection is mandatory