WEG Heavy-Duty Roller Table Induction Motors
The WEG Roller Table Motor Series (featured model: W22 Roller Table 225S/M 37 kW 6-Pole) is purpose-built for the extreme shock loads, ambient radiant heat, and high-frequency reversing cycles encountered in steel mills and metallurgical rolling benches. Engineered with a heavy-duty, high-rigidity FC-200 cast iron frame with special ring-finned cooling structures, these motors excel in non-ventilated (TENV / IC410) or forced-ventilated (TEFC / IC416) configurations. Operating across power ratings from 1.1 kW up to 250 kW in IEC frame sizes 112 to 400, WEG roller table drives feature high breakdown torque capability (up to 300% to 400% of nominal torque) and Class H WISE® insulation to safely withstand variable voltage/frequency inverter control (VVVF) under continuous S1 to S9 duties. They are widely specified on hot and cold strip mill run-out tables, continuous caster entry/exit tables, section mill benches, and billet transfer conveyors.
Technical Specifications
| Featured Model | W22 Roller Table 225S/M (37 kW / 50 HP, 6-Pole, 400V/690V, IEC 225 Frame) |
|---|---|
| Brand / Manufacturer | WEG |
| Product Series | WEG W22 & Custom Heavy-Duty Steel Mill Roller Table Series |
| Power Range Covered | 1.1 kW to 250 kW (1.5 HP to 335 HP) |
| Voltage Ratings | 220V up to 690V (Inverter Duty VVVF Controlled, 50 Hz / 60 Hz) |
| Frame Sizes (IEC) | 112 to 400 (Heavy Ring-Finned FC-200 Cast Iron Construction) |
| Thermal Class & Insulation | Class H Insulation with WEG WISE® VFD Corona Shielding (dt = 80K) |
| Cooling & Enclosure | IP55 / IP56 / IP66; Non-Ventilated TENV (IC410) or Forced Fan TEFC (IC416) |
Documentation & Resources
WEG Roller Table Power, Speed & Frame Size Selection Matrix
Selection matrix for standard WEG 6-pole and 8-pole inverter-duty roller table induction motors for steel rolling bench drive lines (50 Hz / 60 Hz VFD operation):
| Motor Power (kW / HP) | Poles / Speed | IEC Frame Size | Cooling Mode | Typical WEG Model Code |
|---|---|---|---|---|
| 2.2 kW (3.0 HP) | 6-Pole (1000 RPM) | 112M | TENV (IC410) | W22 RT 112M 2.2kW 6P IC410 |
| 5.5 kW (7.5 HP) | 6-Pole (1000 RPM) | 132M | TENV (IC410) | W22 RT 132M 5.5kW 6P IC410 |
| 11 kW (15 HP) | 6-Pole / 8-Pole | 160L | TENV / IC416 | W22 RT 160L 11kW 6P IC410 |
| 22 kW (30 HP) | 6-Pole / 8-Pole | 200L | TENV / IC416 | W22 RT 200L 22kW 6P IC416 |
| 37 kW (50 HP) | 6-Pole (1000 RPM) | 225S/M | TENV / IC416 | W22 RT 225S/M 37kW 6P IC416 |
| 75 kW (100 HP) | 6-Pole / 8-Pole | 280S/M | Forced Fan (IC416) | W22 RT 280S/M 75kW 6P IC416 |
| 132 kW (175 HP) | 6-Pole / 8-Pole | 315S/M | Forced Fan (IC416) | W22 RT 315S/M 132kW 6P IC416 |
Steel Mill Roller Table Motor Modernization & Retrofit Guide
Upgrade legacy DC roller table drives or damaged non-inverter AC motors to high-reliability WEG W22 roller table induction motors:
| Legacy Mill Drive Configuration | WEG Roller Table Motor Upgrade | Key Structural & Operational Advantages |
|---|---|---|
| Legacy DC Roller Table Drives | WEG AC Inverter-Duty Roller Table Series Low Maintenance | Eliminates carbon brush wear and commutator maintenance, provides precise torque control down to zero speed via VFD. |
| Standard Industrial AC Motors on Benches | WEG Ring-Finned Cast Iron Mill Motors Thermal & Shock Resistant | Ring-finned FC-200 cast iron frame prevents scale build-up, tolerates radiant heat from hot steel billets up to 1000°C. |
| Frequent Reversing / Plugging Duty Drives | WEG High Breakdown Torque Inverter Motors High Overload Capacity | Breakdown torque ratios up to 400% prevent stalling during heavy slab deceleration and acceleration cycles. |
Expert Sourcing & Metallurgical Application Engineering Notes
WEG roller table motors are engineered with ring-finned cast iron frames without restrictive cooling fins where scale could trap, ensuring natural heat dissipation even under heavy dust and scale coverage. Equipped with Class H WISE® insulation, high-capacity re-greasable roller bearings, insulated non-drive end bearings to eliminate shaft currents, and dual-lip VITON® shaft seals, these units deliver maximum mean time between failures (MTBF). Our engineering team assists with shaft extension customization, flange mounting alignments, thermal sensor (PT100/PTC) integration, and VFD parameter tuning.
Core Benchmark Model Standard Configurations
- W22 RT 112M 2.2kW 6P IC410
- W22 RT 132M 5.5kW 6P IC410
- W22 RT 160L 11kW 6P IC410
- W22 RT 180L 15kW 6P IC410
- W22 RT 200L 22kW 6P IC416
- W22 RT 225S/M 37kW 6P IC416
- W22 RT 250S/M 55kW 6P IC416
- W22 RT 280S/M 75kW 6P IC416
- WEG Roller Table Class H WISE
- WEG Roller Table Ring-Finned TENV
- WEG Roller Table Shaft Seal IP66
- WEG Roller Table Reversing Duty VFD
