Опис
EP-EQ4255 4-Stage Ultra-High Ratio Planetary Gearbox
Brevini Riduttori EQ4255 Compatible Replacement | EVER POWER
The EQ4-series achieves ratio ranges up to 500:1 in a single housing by stacking four planetary stages ?? the highest reduction option in the EC/EM family. Designed for very slow-speed drives, large industrial positioning systems, antenna and telescope slew drives, kiln and furnace car drives, and large-scale material handling applications where output speed is measured in RPM fractions and maximum torque is non-negotiable.
The EP-EQ4255 replaces the Brevini riduttori EQ4255 ?? a 4-stage planetary gearbox delivering approximately 119,000 Nm output torque, ratio range 50:1 – 500:1, and IP rating IP66.
Технічні параметри
| Параметр | Значення |
|---|---|
| Модель | EP-EQ4255 |
| Замінює | Brevini riduttori EQ4255 |
| Output Torque | 119,000 Nm |
| Етапи шестерень | 4 |
| Діапазон співвідношення | 50:1 – 500:1 |
| Максимальна швидкість введення | 3,000 rpm |
| Ефективність | >= 92% |
| Клас захисту | IP66 |
| Приблизна вага | ~627 kg |
Принцип роботи
Four coaxial planetary stages cascade speed reduction and torque multiplication. Stage 1 handles the high-speed motor input; each successive stage multiplies torque while halving speed. The 4-stage design uses a dual-seal output shaft arrangement ?? a primary FKM lip seal plus a labyrinth ?? providing redundant protection against dust and slurry ingress in the slow-speed, high-torque industrial environments where EQ4 units are most commonly deployed.
Основні переваги
|
● Up to 500:1 Single Housing
Eliminates tandem gearbox arrangements for extreme ratios. |
● Dual-Seal Output Shaft
Primary FKM seal plus labyrinth ?? redundant ingress protection. |
|
● IP66 Standard Sealing
Outdoor and wet industrial environment rated. |
● 4-Stage Torque Density
Maximum torque for given housing size in the EC/EM range. |
|
● Direct EQ4-Series Replacement
Identical flange and port dimensions. |
Структура та технологія матеріалів
All four stages use 17CrNiMo6 carburised and ground steel gears. Output stage planet journals run on needle roller bearings with hardened pins for maximum radial stiffness. The housing is cast from GGG50 ductile iron with H7 bore tolerances throughout. External coating is epoxy-chromate primer for C4 corrosion zone service.
Типові сценарії застосування
| Промисловість | Застосування | Key Benefit |
|---|---|---|
| Offshore | Large AHC winch main drive | High torque and ratio for active heave compensation. |
| Видобуток корисних копалин | SAG mill drive | Extreme continuous torque for semi-autogenous grinding mill. |
| Морський | Large propeller shaft drive | Reliable low-speed drive for large vessel shaft systems. |
| Sugar | Sugar mill crushing drive | Very high torque at slow speed for sugar cane crushing. |
Керівництво з вибору
- Необхідний вихідний крутний момент (Нм) ?? Confirm peak and continuous with safety factor (1.3-2.0 typical).
- Передавальне число ?? Motor speed (rpm) / required output speed (rpm).
- Stage Count ?? 4-stage (4-stage) provides ratio 50:1 – 500:1.
- Motor Interface ?? Flange type (SAE/ISO metric), shaft diameter and key.
- Операційне середовище ?? IP class, ambient temperature, mounting orientation.
Contact our engineers for a free application sizing review.
Brevini EQ4255 vs. EVER POWER EP-EQ4255
Notice: EVER POWER references Brevini riduttori EQ4255 solely for customer cross-reference. We are not affiliated with Brevini. Our EP-EQ4255 is an independently designed product that is dimensionally and functionally compatible. No Brevini trademarks or intellectual property are reproduced.
| Аспект | Brevini EQ4255 | EVER POWER EP-EQ4255 |
|---|---|---|
| Price | OEM European premium | Competitive ?? 30-45% saving typical |
| Час виконання | 6-16 weeks depending on size | 2-6 weeks |
| Етапи шестерень | 4 | 4 |
| Гарантія | 12 months standard | Стандарт 18 місяців |
| Налаштування | Обмежена | OEM/ODM drawings accepted |
EVER POWER also supplies matched electric and hydraulic motors for complete drive system packages. Enquire about motor pairing.
Сертифікати якості та зобов'язання щодо обслуговування
- ISO 9001:2015 certified manufacturing and quality management.
- CE Marking ?? EU Machinery Directive 2006/42/EC compliant.
- 18-місячна гарантія from shipment date covering all EP-EQ4255 manufacturing defects.
- 48-годинна технічна допомога у вирішенні польових проблем.
- Seal kits and wear parts stocked for rapid dispatch.
Дізнайтеся більше на EVER POWER Про нас.
Case Studies ?? Engineer Field Notes
| Країна | Застосування | Відгуки клієнтів |
|---|---|---|
| UAE | Cement mill main drive, large plant | “Extreme torque requirement met. CE documentation accepted by our local regulator without question.” ?? Plant Director, Abu Dhabi. |
| Австралія | Large mining excavator travel drive, iron ore mine | “Class-leading torque handled the hardest magnetite bench conditions without overload.” ?? Equipment Director, Pilbara. |
| Netherlands | Ship thruster drive, heavy offshore vessel | “EVER POWER delivered on a very tight shipyard schedule. The gearbox was dimensionally exact.” ?? Marine Engineer, Rotterdam. |
Часті запитання
Q: What is the minimum output speed achievable?
A: With a 3,000 rpm input and the 500:1 maximum ratio, minimum output speed is 6 rpm. Lower speeds require a proportional reduction in input speed.
Q: Can the EQ4-series handle reversing loads?
A: Yes. All four stages are rated for equal forward and reverse torque. Fatigue life calculations assume 50/50 direction split.
Співпрацюйте з EVER POWER
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