B&R 8LSA46

Technical Specifications

• Cooling Method: Self‑cooling (Cooling Type A)
• Pole‑pair Quantity: 5
• Nominal Speed: 3000 rpm / 6000 rpm (variant‑dependent)
• Stall Torque: 10 Nm
• Nominal Torque: 7.7 Nm
• Maximum Torque: 38 Nm
• Flange Dimension: 100 mm square flange, centering diameter 95 mm j6 tolerance
• Feedback Options: Resolver, EnDat inductive encoder
• Shaft Options: Smooth shaft, keyed shaft; optional holding brake
• Degree of Protection: IP65 for shaft‑end and connector interfaces
• Certifications: CE, UKCA, UL cURus E360421 (servo‑motor component)B& R Indus…

Functional Features

• Optimized magnetic‑circuit design for low cogging‑torque and smooth rotation
• High overload capacity for short‑term high‑torque dynamic operation
• Embedded parameter chip storing motor‑identification data for automatic drive‑system commissioning
• Swivel‑type angled SpeedTec connector for flexible cable routing
• Optional holding brake, oil‑seal and reinforced‑bearing configurations
• Compact high‑power‑density mechanical structure

Application Scenarios Packaging machinery, machine‑tool auxiliary axes, printing equipment, material‑handling robots, textile‑machinery servo axes, automated assembly equipment.

Material Composition

• Motor housing: Aluminum alloy die‑cast housing
• Rotor: High‑performance rare‑earth permanent‑magnet rotor
• Stator: Copper‑wound stator laminated silicon‑steel sheets
• Shaft: High‑strength alloy steel output shaft
• Connector housing: Industrial‑grade plastic with metal shielding shell

Structural Characteristics Self‑cooling fin‑structured aluminum housing. Standard square‑flange mounting interface. Rotatable angled SpeedTec connector assembly. Internal resolver / inductive‑encoder feedback unit. Optional spring‑applied holding‑brake module integrated at non‑drive end.

Working Principle Permanent‑magnet synchronous motor operating principle. The servo drive supplies three‑phase sinusoidal current to stator windings to generate rotating magnetic‑field, driving permanent‑magnet rotor to produce torque. Feedback device transmits position‑speed data to drive for closed‑loop position‑velocity‑torque control.

Installation Requirements

• Mount via standard flange‑face mounting holes
• Allow sufficient surrounding space for natural convection heat dissipation
• Select matched shielded motor power cable and feedback cable
• Observe maximum allowable shaft radial‑axial load parameters
• Ensure protective‑earth connection is reliable