Descripción
Main drive gearboxes for steel rolling mills are engineered to deliver exceptional torque and withstand extreme shock loads in hot and cold rolling operations. These heavy-duty units ensure reliable power transmission between the motor and work rolls, supporting continuous high-production environments in steel plants worldwide.
Descripción general del producto
These gearboxes serve hot strip mills, cold rolling mills, and plate mills. Core strengths include high output torque capacity up to 2,500 kNm, robust parallel-shaft or planetary configurations, and design features optimized for reversing duty, impact loads, and elevated operating temperatures typical in steel rolling operations.
Parámetros técnicos
| Parámetro | Rango de especificaciones |
|---|---|
| Potencia de entrada | Hasta 6000 kW |
| Par de salida | Hasta 2500 kNm |
| Rango de relación | 6:1 a 400:1 |
| Velocidad de entrada | Hasta 1800 rpm |
| Opciones de montaje | Foot, flange, custom mill interfaces |
| Temperatura ambiente | -30 degrees C to +120 degrees C |
| Clasificación de protección | IP66 standard |
Principio de funcionamiento
Power from the main drive motor is transmitted through multiple stages of precision helical or bevel-helical gears. The high-torque output shaft connects directly to the work roll or pinion stand. Reinforced housings and optimized tooth profiles absorb the heavy reversing loads and impact forces typical in rolling mill operations while maintaining efficient power transfer.
Ventajas principales
Handles peak loads up to 2,500 kNm with reinforced gear sets designed for continuous reversing duty.
Optimized tooth profiles and robust housing absorb impact forces from strip entry and roll changes.
Advanced lubrication and cooling options maintain performance at operating temperatures up to 120 degrees C.
Gears ground to DIN Class 5–6 accuracy for low noise and extended service life under heavy loads.
Engineered to match existing mill stand dimensions, shaft interfaces, and foundation requirements.
Proven in continuous steel mill operations with minimal maintenance and high uptime.
Estructura y mano de obra de los materiales
Housings are fabricated from high-strength steel plate or cast in QT500 ductile iron with internal ribbing for rigidity. Gears are precision ground from case-hardened alloy steel (20CrMnTi or 42CrMo). Large-diameter shafts and heavy-duty spherical roller bearings handle combined radial and axial loads. Advanced sealing and forced lubrication systems protect components in high-temperature, dusty mill environments.
Escenarios de aplicación típicos
Hot Strip Mill Stands: Delivers precise, high-torque power to work rolls during continuous high-speed rolling with frequent direction changes.
Cold Rolling Mills: Provides stable torque and accurate speed control for high-precision strip thickness reduction.
Plate and Section Mills: Handles extreme impact loads in heavy plate rolling and structural section production lines.
Guía de selección
Calculate peak and continuous torque requirements including starting loads and rolling forces. Determine the required ratio for target roll speed. Consider mounting orientation, available space, and foundation strength. Evaluate thermal capacity for continuous or reversing duty. Specify any custom interfaces or cooling requirements. Review efficiency curves at expected operating loads and confirm compatibility with existing motor and mill stand dimensions.
Comparación con otras marcas
La tabla que aparece a continuación muestra modelos equivalentes comunes a modo de referencia. EVER POWER es una empresa holandesa independiente y no fabrica ni vende productos falsificados de ninguna marca. Esta información sirve únicamente para facilitar la selección de productos de diferentes marcas.
| Modelo EVER POWER | Equivalente SEW | Equivalente de Flender | Equivalente de Sumitomo | Nota de selección de claves |
|---|---|---|---|---|
| EP-RM-1200 | X5K 355 | B5SH 13 | Paramax 13000 | Hot strip mill main drive |
| EP-RM-1800 | X6K 400 | B6SH 14 | Paramax 15000 | Cold rolling stand |
| EP-RM-2500 | X7K 450 | B7SH 16 | Paramax 17000 | Heavy plate mill |
Certificación de calidad y compromiso de servicio
All units are manufactured under ISO 9001:2015 quality management and carry CE marking. An 18-month warranty from shipment or 12 months from commissioning (whichever comes first) covers materials and workmanship. Global technical support, spare parts, and on-site commissioning services are available from the Dutch headquarters and authorized partners.
Preguntas frecuentes
Q: What service factor is recommended for rolling mill applications?
A: A minimum service factor of 2.0–2.5 is recommended to account for frequent reversing duty and heavy impact loads.
Q: How is thermal management handled in high-temperature mill environments?
A: Forced lubrication with oil cooling systems and optional external coolers maintain stable operating temperatures up to 120 degrees C ambient.
Q: Can these gearboxes be supplied with condition monitoring?
A: Yes. Standard mounting points allow integration of vibration, temperature, and oil condition sensors for predictive maintenance.
Q: What alignment tolerance is required during installation?
A: Parallel and angular alignment within 0.05 mm is recommended to ensure even load distribution and extended bearing life.
Q: Are spare gear sets readily available?
A: Yes. Critical spare parts including gear sets, bearings, and seals are stocked for rapid dispatch to minimize mill downtime.
Estudios de caso – Notas de campo de ingeniería
India – Major steel plant in Jharkhand. Four main drive gearboxes (800 kNm) were installed on a 1,780 mm hot strip mill during a planned shutdown. Post-commissioning vibration levels were 40% below acceptance criteria with zero alignment issues.
Germany – Cold rolling mill near Duisburg. Two precision gearboxes replaced aging European units. The maintenance team reported improved efficiency and significantly reduced noise levels after 18 months of continuous operation.
Brasil – Plate mill in Minas Gerais. A 2,200 kNm custom gearbox was supplied for heavy plate production. Operations data confirmed reliable performance under extreme impact loads with extended maintenance intervals.
Llamamiento a la cooperación
EVER POWER, a Dutch company specializing in heavy-duty mill drive gearboxes, welcomes inquiries from steel producers seeking reliable, high-torque solutions. Our engineering team can review your mill stand requirements and provide a tailored proposal.
Visita el sitio principal for more information. For technical discussions or quotations, please contact us via the página de contacto. We are prepared to support your rolling mill projects with proven, high-performance equipment.
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