B&R 81MPH6.300S100-01
2-phase hybrid stepper motor, 86 mm flange, length 150 mm, 3 A, 13.6 Nm holding torque
Lifecycle & replacement
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No manufacturer-published lifecycle data for B&R part numbers is indexed here yet. Ask IAC to check availability and an upgrade path.
IAC stocks legacy spares and exchange units and quotes upgrade paths. Send us the nameplate details and we will confirm a compatible replacement.
Technical specifications
Short description
| Stepper motor | Hybrid stepper motor flange size 86 mm |
Specific motor data
| Connection | M12, L-coded (male) |
| Wiring | Bipolar |
| Number of phases | 2 |
| Nominal voltage | 48 VDC |
| Nominal current | 3 A / phase |
| Continuous stall current | 3 A / phase |
| Peak current | 3 A / phase |
| Resistance/Phase | 2.24 Ω ±0.22% at 25°C |
| Inductance/Phase | 21.60 mH ±20% at 1 kHz |
| Voltage constant | 220.48 mV/rpm |
| Torque constant | 1.57 Nm/A |
| Nominal torque | 4.70 Nm |
| Peak torque | 11.50 Nm |
| Holding torque | 11.50 Nm |
| Detent torque | <420 mNm |
| Rotor inertia | 3900 gcm² |
General motor data
| Nominal speed | 150 rpm |
| Maximum speed | 3000 rpm |
| Stepping angle | 1.8° ±5% |
| Average period of operation between failures | - |
| Insulation class | B (130°C) |
| Dielectric resistance | 500 VAC for 1 minute |
| Driver supply voltage | Max. 60 V |
Operating conditions
| Degree of protection per EN 60529 | IP65 |
Ambient conditions
| Temperature / Operation | -20 to 50°C |
| Temperature / Storage | -20 to 70°C |
| Temperature / Transport | -20 to 70°C |
| Relative humidity / Operation | 15 to 95%, non-condensing |
| Relative humidity / Storage | 5 to 95%, non-condensing |
| Relative humidity / Transport | 5 to 95%, non-condensing |
Mechanical properties
| Material | Die-cast aluminum alloy |
| Max. radial load | 220 N |
| Max. axial load | 60 N |
| Weight | 4180 g |
| Length | 150 ±1 mm |
Documentation & CAD
Files hosted by B&R Industrial Automation; links open the official download page.
3D CAD models
Get a quote for a replacement
Industrial Automation Co. stocks, sources, and repairs B&R parts — new, refurbished, or exchange units with warranty.
Specifications from the official B&R product catalog. Always confirm against the datasheet for your exact revision.