WEG Heavy-Duty Electromagnetic Brake Motors
The WEG Heavy-Duty Brake Motor Series (featured model: W22 Brake Motor 225S/M 37 kW 4-Pole) seamlessly integrates high-performance AC induction motor technology with a robust, fail-safe spring-applied electromagnetic DC or AC brake. Engineered specifically for applications requiring immediate stopping, precise holding, safety locking, and high-frequency start-stop cycles, WEG brake motors prevent coasting and back-driving during power interruptions or normal cycle halts. Available in heavy-duty FC-200 cast iron or lightweight aluminum enclosures covering power ratings from 0.12 kW up to 160 kW in IEC frame sizes 63 to 315, these motors feature high brake torque capacity (up to 200% of motor rated torque). Equipped with WISE® insulation for variable frequency drive (VFD) compatibility, optional manual release levers, and IP55/IP66 enclosures, WEG brake motors are widely specified across overhead cranes, hoists, elevators, automated conveyors, packaging machinery, and industrial winches.
Technical Specifications
| Featured Model | W22 Brake Motor 225S/M (37 kW / 50 HP, 4-Pole, 400V/690V, IEC 225 Frame, DC Brake coil 102V/205V) |
|---|---|
| Brand / Manufacturer | WEG |
| Product Series | WEG W22 Cast Iron & W21 Aluminum Electromagnetic Brake Motor Series |
| Power Range Covered | 0.12 kW to 160 kW (0.16 HP to 215 HP) |
| Brake System Type | Fail-safe, spring-applied electromagnetic disc brake (DC coil via internal/external rectifier or AC coil) |
| Brake Torque Capacity | Up to 200% of motor nominal rated torque (adjustable torque spring configurations) |
| Optional Accessories | Manual brake release lever (hand release), microswitches for brake status, encoder integration |
| Frame Sizes (IEC) | 63 to 315 (FC-200 Cast Iron or High-Strength Aluminum Construction) |
| Insulation & Protection | Class F / H Insulation with WEG WISE® VFD Corona Shielding; IP55 / IP56 / IP65 / IP66 |
Documentation & Resources
WEG Brake Motor Power, Brake Torque & Frame Size Selection Matrix
Selection matrix for standard WEG 2-pole, 4-pole, and 6-pole brake induction motors for dynamic stopping and static holding duties (50 Hz / 60 Hz DOL or VFD operation):
| Motor Power (kW / HP) | Poles / Speed | IEC Frame Size | Nominal Brake Torque (Nm) | Typical WEG Model Code |
|---|---|---|---|---|
| 1.5 kW (2.0 HP) | 4-Pole (1500 RPM) | 90L | 20 Nm (DC Brake) | W22 Brake 90L 1.5kW 4P IP55 |
| 4.0 kW (5.5 HP) | 4-Pole (1500 RPM) | 112M | 40 Nm (DC Brake) | W22 Brake 112M 4kW 4P IP55 |
| 7.5 kW (10 HP) | 4-Pole (1500 RPM) | 132M | 80 Nm (DC Brake) | W22 Brake 132M 7.5kW 4P IP55 |
| 15 kW (20 HP) | 4-Pole (1500 RPM) | 160L | 150 Nm (DC Brake) | W22 Brake 160L 15kW 4P IP55 |
| 30 kW (40 HP) | 4-Pole (1500 RPM) | 200L | 300 Nm (DC Brake) | W22 Brake 200L 30kW 4P IP55 |
| 55 kW (75 HP) | 4-Pole (1500 RPM) | 250S/M | 500 Nm (DC Brake) | W22 Brake 250S/M 55kW 4P IP55 |
| 110 kW (150 HP) | 4-Pole (1500 RPM) | 315S/M | 1000 Nm (DC Brake) | W22 Brake 315S/M 110kW 4P IP55 |
Industrial Hoisting & Positioning Modernization Guide
Upgrade legacy external thruster brakes or worn separate brake assemblies to compact, factory-integrated WEG electromagnetic brake motors:
| Legacy Industrial Brake Configuration | WEG Integrated Brake Motor Upgrade | Key Safety & Operational Advantages |
|---|---|---|
| External Electro-Hydraulic Thruster Brakes | WEG Integrated Spring-Applied DC Brake Motor Fast Action & Compact | Eliminates bulky mechanical linkages, reducing response time down to milliseconds for rapid stopping. |
| Standard Motor + External Disc Brake Kit | WEG Factory-Assembled W22 Brake Motor Factory Tested Alignment | Eliminates alignment errors, reduces overall drive length, and provides factory-sealed IP55/IP66 enclosure. |
| High-Cycle Inverter Controlled Hoists | WEG VFD-Duty Insulation + Fast Rectifier Brake VFD Inverter Ready | WISE® insulation prevents inverter voltage spike breakdown while fast-rectifiers ensure instant brake release. |
Expert Sourcing & Material Handling Engineering Notes
WEG brake motors feature fail-safe spring-applied brake pads, high-wear-resistant friction linings, dual-frequency brake coils, and heavy-duty cast iron endshields to absorb repetitive stopping kinetics without thermal fading. Equipped with WEG WISE® insulation system for variable speed operation, available manual release levers for power outage emergencies, and integrated microswitches for PLC feedback, these units deliver maximum equipment safety. Our engineering team assists with brake coil voltage selection, fast-switching rectifier selection (fast-action excitation), forced cooling fan integration for low-speed inverter operation, and encoder feedback integration.
Core Benchmark Model Standard Configurations
- W22 Brake 90L 1.5kW 4P IP55
- W22 Brake 112M 4kW 4P IP55
- W22 Brake 132M 7.5kW 4P IP55
- W22 Brake 160L 15kW 4P IP55
- W22 Brake 200L 30kW 4P IP55
- W22 Brake 250S/M 55kW 4P IP55
- W22 Brake 315S/M 110kW 4P IP55
- WEG Brake Motor Manual Release
- WEG Brake Motor Rectifier 205VDC
- WEG Brake Motor Heavy Duty Crane
- WEG Brake Motor Hoist Duty IP66
- WEG Brake Motor VFD Certified
