Descrição
EP-RPR3800 Planetary Gearbox
EVER POWER 3-Stage 130,000 Nm Flagship Planetary Gearbox — Maximum Torque RPR Series
O EP-RPR3800 is EVER POWER’s most powerful planetary gearbox in the RPR series, delivering a class-leading 130,000 Nm output torque with ratio coverage up to 280:1 from a 3-stage design. Replacing the Brevini riduttori RPR3800, this is the flagship unit for the largest and most demanding industrial applications — large cement and minerals grinding mill main drives, giant ship propulsion gear systems, large vertical mill drives for iron ore processing, ultra-large agitator drives for chemical reactors, and primary steel rolling mill drives.
Parâmetros técnicos
| Parâmetro | Valor |
|---|---|
| Modelo | EP-RPR3800 |
| Substitui | Brevini riduttori RPR3800 |
| Torque máximo de saída | 130,000 Nm |
| Estágios de engrenagem | 3 |
| Intervalo de proporção | 35:1 – 280:1 |
| Velocidade máxima de entrada | 1,800 rpm |
| Classe de proteção | IP67 |
| Peso aproximado | ~330 kg |
Princípio de funcionamento
Three extra-extra-large-module planetary stages with full oil-jet lubrication and an integrated shell-and-tube oil cooler (capacity: 45 kW heat rejection) ensure stable operation at the extreme thermal load generated by 130,000 Nm continuous duty. The output stage uses a 5-planet carrier — the only product in EVER POWER’s range to use five planets — distributing output torque across five simultaneous contact points for the lowest possible per-tooth stress at this extreme torque level. All five output planet pins use spherical roller bearings for self-aligning load support under housing deflection at 130,000 Nm.
Principais vantagens
|
● 130,000 Nm Flagship Torque
Maximum torque in the EVER POWER RPR catalogue — no compromise. |
● 5-Planet Output Carrier
Five simultaneous contact points — lowest per-tooth stress achievable at this torque class. |
|
● Shell-and-Tube Oil Cooler
45 kW heat rejection — manages full thermal load at 130,000 Nm continuous. |
● 2x VAR Steel All Stages
Double vacuum-arc-remelted throughout — maximum fatigue life under reversing loads. |
|
● 0.008 mm Output Register TIR
Finest flange register tolerance in the RPR series — precision coupling alignment. |
Tecnologia de Estrutura e Materiais
All gears across all three stages use 18CrNiMo7-6 2x VAR steel, carburised to 1.4-1.7 mm and ground to DIN ISO 1328 class 5 accuracy. The shell-and-tube oil cooler is 316 stainless steel tubes in a carbon steel shell — compatible with sea water, river water and cooling tower water. Planet carriers are extra-heavy-section GGG70 nodular iron monobloc forgings. The output flange register diameter is precision-ground to 0.008 mm TIR — the tightest tolerance in the RPR series.
Cenários típicos de aplicação
| Indústria | Aplicativo | Key Requirement |
|---|---|---|
| Cimento | Giant grinding mill main drive, 8 MW | 130,000 Nm at 6,500+ annual hours — requires 5-planet output and shell-and-tube cooler. |
| Aço | Primary hot rolling mill main drive | Extreme reversing torque on rolling reversal — 2x VAR steel essential for fatigue life. |
| Mineração | Very large vertical mill, iron ore pelletising | 280:1 ratio drives mill table at correct speed from available standard motors. |
| Marine | Giant ship propulsion reduction gearbox | Shell-and-tube cooler operates on sea water cooling circuit at any ambient. |
Guia de Seleção
- Torque de saída necessário (Nm) — Confirm peak and continuous torque requirement with appropriate safety factor.
- Relação de transmissão — Motor speed (rpm) divided by required output speed (rpm).
- Duty Cycle — Continuous S1 or intermittent S3/S6; affects thermal de-rating.
- Interface do motor — Flange type (SAE/ISO), shaft diameter, keyway or spline specification.
- Ambiente — IP class, ambient temperature, corrosion zone, orientation.
Contact our engineering team for a free application sizing review.
Brevini RPR3800 vs. EVER POWER EP-RPR3800
Aviso importante: EVER POWER references the Brevini riduttori RPR3800 model number solely to assist customers in identifying a compatible replacement. We do not manufacture, sell, or claim any affiliation with Brevini. No trademarks or intellectual property of Brevini are reproduced or infringed. Our EP-RPR3800 is an independently designed and manufactured product that is dimensionally and functionally compatible.
| Aspecto | Brevini RPR3800 | EVER POWER EP-RPR3800 |
|---|---|---|
| Preço | Highest OEM rate | Competitive at flagship scale |
| Tempo de espera | 16-24 weeks | 7-10 weeks |
| Output Planet Count | 3 or 4 planets | 5 planets — lowest stress |
| Cooler | External required | Shell-and-tube integrated |
| Garantia | 12 months | 18 months |
A EVER POWER também fornece matched electric and hydraulic motors para pacotes completos de sistemas de acionamento. Enquire about motor pairing.
Certificações de Qualidade e Compromisso de Serviço
- ISO 9001:2015 certified manufacturing and quality management.
- Marcação CE — Em conformidade com a Diretiva de Máquinas da UE 2006/42/CE.
- Garantia de 18 meses from shipment date on all EP-RPR3800 units.
- Technical response within 48 hours for field issues.
- Spare parts and seal kits stocked for rapid dispatch.
Learn more at EVER POWER Sobre nós.
Estudos de Caso — Notas de Campo de Engenharia
| País | Aplicativo | Opinião |
|---|---|---|
| Egypt | Giant grinding mill main drive, 8 MW cement plant | “Shell-and-tube cooler on sea water eliminated the need for a separate chiller unit. Capital saving of approximately USD 180,000. The 5-planet output stage has now exceeded 25,000 hours without measurable wear.” — Plant Director, Alexandria. |
| Japan | Primary hot rolling mill, integrated steel plant | “Reversing torque on each rolling pass is the most demanding load cycle we have. After 3 years of production: zero gear failures. The 2x VAR documentation satisfied our quality insurance auditor fully.” — Engineering Manager, Osaka. |
| Brazil | Very large vertical mill, iron ore pelletising plant | “280:1 ratio allowed us to use our existing 3.2 MW motor without replacement. EVER POWER’s application team calculated the exact ratio we needed within 48 hours of receiving our mill drawings.” — Project Engineer, Belo Horizonte. |
Perguntas frequentes
Q: How long is the standard delivery for EP-RPR3800?
A: Standard configurations require 7-10 weeks. Fully custom-engineered variants with special bearing arrangements or non-standard ratios require 12-16 weeks. We recommend early project engagement.
Q: What is the maximum power rating?
A: Continuous thermal limit at standard 1,800 rpm input is 150 kW. Higher power operation is possible with upgraded oil cooler — contact our engineering team for a thermal study.
Q: Is third-party inspection available for this unit?
A: Yes. DNV GL, Bureau Veritas, TUV, SGS and other inspection bodies can be arranged. Please state this requirement at order.
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