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EP-RPR3600 Planetary Gearbox
EVER POWER 3-Stage 98,000 Nm Ultra-Heavy Planetary Gearbox
The EP-RPR3600 is one of EVER POWER’s most powerful RPR series gearboxes, achieving 98,000 Nm output torque with a 3-stage VAR-steel planetary design and ratio range extending to 250:1. Replacing the Brevini riduttori RPR3600, this unit is specified for the most demanding large-scale industrial installations — large cement raw mill and clinker mill main drives, large ship propulsion gearboxes, large slewing ring drive systems, sugar mill main drives and large industrial press drives.
Technical Parameters
| Parameter | Value |
|---|---|
| Model | EP-RPR3600 |
| Replaces | Brevini riduttori RPR3600 |
| Max Output Torque | 98,000 Nm |
| Gear Stages | 3 |
| Ratio Range | 32:1 – 250:1 |
| Max Input Speed | 2,000 rpm |
| Protection Class | IP67 |
| Approx. Weight | ~245 kg |
Working Principle
Three extra-large-module planetary stages operate with full oil-jet lubrication. The integrated oil cooling heat exchanger — a plate-type oil-to-water cooler built into the housing base — maintains oil temperature below 75 degC even at 98,000 Nm continuous duty in tropical ambient conditions. The output shaft arrangement uses a split-type shrink disc coupling interface for direct connection to large solid shafts without machining the driven shaft.
Core Advantages
|
▲ 98,000 Nm Ultra-High Torque
One of the highest torque ratings in EVER POWER’s RPR product catalogue. |
▲ Integrated Oil-to-Water Cooler
Plate cooler built into housing base — maintains oil below 75 degC at tropical ambient. |
|
▲ Shrink Disc Coupling Interface
Direct connection to large solid shafts without shaft machining. |
▲ 316 SS Oil Cooler
Compatible with freshwater and sea water cooling circuits. |
|
▲ Direct RPR3600 Replacement
Same external mounting pattern as original Brevini unit. |
Structure and Material Technology
All gears throughout three stages use 18CrNiMo7-6 VAR steel, ground to DIN ISO 1328 class 5. Planet carriers are massive GGG70 nodular iron forgings — not weldments — for maximum structural integrity. The integrated oil cooler body is 316 stainless steel for compatibility with cooling water from various sources including sea water if required.
Typical Application Scenarios
| Industry | Application | Key Requirement |
|---|---|---|
| Cement | Large clinker mill main drive | 98,000 Nm sustained at 6,000+ annual hours — requires VAR + oil-to-water cooler. |
| Sugar | Sugar mill main crushing drive | 250:1 ratio drives crushing rolls at correct surface speed from large motor. |
| Marine | Large ship propulsion gearbox assist | Integrated oil cooler critical in engine room ambient temperatures up to 55 degC. |
| Press | Large industrial hydraulic press drive | 98,000 Nm peak torque on press down-stroke handled without overload. |
Selection Guide
- Required Output Torque (Nm) — Confirm peak and continuous torque requirement with appropriate safety factor.
- Gear Ratio — Motor speed (rpm) divided by required output speed (rpm).
- Duty Cycle — Continuous S1 or intermittent S3/S6; affects thermal de-rating.
- Motor Interface — Flange type (SAE/ISO), shaft diameter, keyway or spline specification.
- Environment — IP class, ambient temperature, corrosion zone, orientation.
Contact our engineering team for a free application sizing review.
Brevini RPR3600 vs. EVER POWER EP-RPR3600
Important Notice: EVER POWER references the Brevini riduttori RPR3600 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-RPR3600 is an independently designed and manufactured product that is dimensionally and functionally compatible.
| Aspect | Brevini RPR3600 | EVER POWER EP-RPR3600 |
|---|---|---|
| Price | Very high OEM rate | Competitive at this scale |
| Lead Time | 14-22 weeks | 6-9 weeks |
| Oil Cooler | External unit required | Integrated plate cooler |
| Coupling Interface | Flange only | Flange or shrink disc |
| Warranty | 12 months | 18 months |
EVER POWER also supplies matched electric and hydraulic motors for complete drive system packages. Enquire about motor pairing.
Quality Certifications and Service Commitment
- ISO 9001:2015 certified manufacturing and quality management.
- CE Marking — EU Machinery Directive 2006/42/EC compliant.
- 18-month warranty from shipment date on all EP-RPR3600 units.
- Technical response within 48 hours for field issues.
- Spare parts and seal kits stocked for rapid dispatch.
Learn more at EVER POWER About Us.
Case Studies — Engineer Field Notes
| Country | Application | Feedback |
|---|---|---|
| Egypt | Cement clinker mill main drive, large plant | “Integrated oil cooler eliminated the external oil cooling unit we previously had on the mill platform. Space saving was significant. Oil temperature now stable at 68 degC even in summer.” — Plant Director, Cairo. |
| Cuba | Sugar mill main crushing drive, state refinery | “250:1 ratio allowed us to use our existing motor without replacement. Capital saving was decisive for our budget-constrained modernisation project.” — Technical Director, Havana. |
| South Korea | Large marine propulsion gearbox assist | “316 SS oil cooler was required for sea water cooling circuit compatibility. EVER POWER confirmed this specification without additional cost.” — Marine Engineer, Ulsan. |
Frequently Asked Questions
Q: What cooling water flow rate is required for the plate cooler?
A: Standard flow rate is 15-20 litres/minute at inlet temperature below 30 degC. Sea water service requires reduced flow rate — contact our engineering team for a cooling calculation.
Q: Is the shrink disc coupling included?
A: The shrink disc interface boss is standard. The shrink disc itself is sourced separately and matched to the customer’s shaft diameter — EVER POWER can supply or provide the coupling specification.
Partner With EVER POWER
EVER POWER supports OEM machine builders, engineering contractors and maintenance teams worldwide. Browse our full replacement range, explore our manufacturing capabilities, or contact us today for a fast quotation. Visit planetary-gear-box.top for the complete EVER POWER portfolio.
