Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
B&R 8LS46
B&R 8LS46
3. Key Technical Specifications
| Parameter | Value (typical 8LSA46) |
|---|---|
| Flange Size | 100 × 100 mm |
| Centering Diameter | 95 mm (j6) |
| Stall Torque (M0) | Approx. 10 Nm |
| Nominal Torque (Mn) | Approx. 5 Nm |
| Nominal Speed (nN) | Up to 6000 rpm (depending on winding) |
| Maximum Speed | Up to 12 000 rpm |
| Nominal Power | Approx. 3.1 kW (at 6000 rpm) |
| Cooling | Self-cooling (A) or fan-cooled variants |
| Feedback Options | EnDat (inductive multi-turn/single-turn), resolver |
| Shaft | Smooth or keyed, with or without oil seal |
| Holding Brake | Optional |
| Connection | Connector or terminal box |
| Compatibility | ACOPOS / ACOPOSmulti / ACOPOS P3 drives |
4. Product Introduction (Anti-Template)
When a machine axis needs high dynamic response, precise positioning, and compact installation, the B&R 8LS46 synchronous motor delivers. Belonging to the 8LS family, the size-46 frame (100 mm flange) offers a stall torque around 10 Nm with excellent power density and low rotor inertia.
These permanent-magnet motors support sinusoidal commutation via EnDat or resolver feedback and are optimized for use with B&R ACOPOS family servo drives. Self-cooling and forced-air variants, multiple encoder options, optional holding brakes, and different shaft/connection configurations allow the motor to be matched to packaging, plastics, printing, and general automation applications that demand fast acceleration and high overload capacity.
B&R 8LS46
B&R 8LS46
5. QC, Procurement & Logistics SOP
- Inbound Verification – Confirm full type designation (e.g., 8LSA46.xxxx), nameplate data, encoder type, shaft version, brake presence, and connector condition. Photograph the nameplate and any option codes.
- Live Rig Testing – Mount on a test stand or compatible ACOPOS drive, verify encoder communication, phase sequence, holding-brake operation (if fitted), and basic torque/speed response under controlled conditions.
- QA & Anti-Static / Mechanical Packaging – Protect the shaft, encoder connector, and power connectors. Clean the motor and pack in original-style or equivalent protective packaging with shaft protection and desiccant.
- Global Logistics & Export Compliance – Classify under the correct HS code for industrial servo motors. Packaging must protect against shock and moisture; export documentation is prepared to minimize customs delays.
B&R 8LS46
6. Technical Pitfalls & Integration Warnings
Encoder Compatibility – The motor must be ordered with the feedback type (EnDat or resolver) that matches the ACOPOS drive configuration. Mismatched feedback prevents proper commutation and positioning.
Thermal Overload – Self-cooling versions rely on adequate mounting and ambient conditions. Continuous operation near stall torque without proper heat dissipation will trigger thermal protection or reduce motor life.
Shaft and Mechanical Interface – Confirm shaft diameter, keyway, and oil-seal requirements against the mechanical design. Incorrect coupling or excessive axial/radial load damages the bearings.
Brake Control – If a holding brake is fitted, it must be released by the drive before motion is commanded. Failure to release the brake causes immediate motor overload or mechanical damage.
7. Frequently Asked Questions (FAQ)
What is the realistic global lead time for a verified 8LS46 motor?
Stock or short-lead-time units typically ship within 3–10 business days after verification. Custom encoder or brake configurations may require longer lead times.
What flange size is the 8LS46?
100 × 100 mm flange with 95 mm centering diameter.
What is the approximate stall torque?
Around 10 Nm for the common 8LSA46 variants.
Which drives are recommended?
B&R ACOPOS, ACOPOSmulti, and ACOPOS P3 servo drives.
Does it include a holding brake?
Optional. Many configurations are available with or without brake; the exact type code indicates the presence of a brake.
What feedback systems are available?
Primarily Heidenhain EnDat (single-turn or multi-turn inductive) and resolvers.
Is the motor self-cooling or fan-cooled?
Both options exist. The 8LSA series is self-cooling; 8LSC variants include a fan. The exact type designation defines the cooling method.
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