説明
EP-RPR2800 Planetary Gearbox
EVER POWER 2-Stage 82,000 Nm Extreme-Duty High-Efficiency Planetary Gearbox
The EP-RPR2800 is EVER POWER’s most powerful 2-stage RPR gearbox, delivering 82,000 Nm output torque from a 2-stage design that maximises power transmission efficiency at extreme torque. Replacing the Brevini riduttori RPR2800, this unit is the preferred choice for high-power continuous-duty applications where the efficiency advantage of 2-stage design outweighs the cost of the larger housing — large mine ventilation fan drives, ultra-large pump drives, heavy ship thruster drives and primary metal processing drives.
Technical Parameters
| Parameter | Value |
|---|---|
| Model | EP-RPR2800 |
| Replaces | Brevini riduttori RPR2800 |
| Max Output Torque | 82,000 Nm |
| Gear Stages | 2 |
| Ratio Range | 26:1 – 105:1 |
| Max Input Speed | 2,000 rpm |
| Protection Class | IP67 |
| Approx. Weight | ~210 kg |
Working Principle
Two extreme-large-module planetary stages handle up to 120 kW continuous input power. The active oil-jet lubrication with integrated oil cooler bypass valve allows the oil system to circulate warm oil through the bypass at startup — protecting bearings and gear contacts from cold oil viscosity stress before the oil reaches operating temperature. The output flange features a large-diameter precision register for accurate centering of large-bore coupling flanges without separate centering rings.
Core Advantages
|
◼ 82,000 Nm Extreme Torque
Most powerful 2-stage RPR gearbox in EVER POWER’s catalogue. |
◼ 2x VAR Steel — Highest Purity
Double vacuum-arc-remelted steel — maximum fatigue life at extreme continuous duty. |
|
◼ Cold-Start Oil Bypass Valve
Circulates warm oil to all contacts before cold oil reaches operating temperature. |
◼ ISO Class 4 Gear Accuracy
Highest accuracy option — minimum transmission error for large machine drives. |
|
◼ Direct RPR2800 Replacement
Same flange dimensions as original Brevini unit. |
Structure and Material Technology
All gears use 18CrNiMo7-6 double vacuum-arc-remelted (2x VAR) steel — the highest available purity for the gear steel used in any EVER POWER product. Carburising depth is 1.3-1.6 mm; profiles ground to ISO 1328 class 4. Planet carriers are GGG70 heavy-section nodular iron forgings. The output shaft is a solid 42CrMo4 + 18CrNiMo7-6 composite forging for maximum bending stiffness.
Typical Application Scenarios
| Industry | Application | Key Requirement |
|---|---|---|
| Mining | Ultra-large mine ventilation fan | 82,000 Nm allows direct drive of large fan impeller without belt stage. |
| Metal | Primary aluminium reduction cell stirrer | 2-stage efficiency critical for energy-intensive electrolytic reduction process. |
| Marine | Large thruster drive, heavy AHTS vessel | 2-stage minimises gearbox losses in tight engine room heat budget. |
| Water | Very large vertical turbine pump, hydroelectric plant | 82,000 Nm handles large turbine pump startup torque without soft-starter. |
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 RPR2800 vs. EVER POWER EP-RPR2800
Important Notice: EVER POWER references the Brevini riduttori RPR2800 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-RPR2800 is an independently designed and manufactured product that is dimensionally and functionally compatible.
| Aspect | Brevini RPR2800 | EVER POWER EP-RPR2800 |
|---|---|---|
| Price | Very high OEM rate | Competitive at extreme scale |
| Lead Time | 14-22 weeks | 6-8 weeks |
| Steel Grade | Standard VAR | 2x VAR — highest purity |
| Cold-Start Protection | Not standard | Bypass valve standard |
| 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-RPR2800 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 |
|---|---|---|
| Australia | Ultra-large mine ventilation fan, deep coal mine | “82,000 Nm direct drive eliminated the belt transmission we previously used. Belt maintenance was a significant cost — now eliminated. Direct drive efficiency also measurably higher.” — Ventilation Engineer, Hunter Valley. |
| Iceland | Large geothermal pump drive, power plant | “2-stage efficiency was our primary requirement in a plant where every kWh has value. EVER POWER delivered 98.3% efficiency at rated load on our test certificate.” — Plant Engineer, Reykjavik. |
| Canada | Large AHTS thruster drive replacement | “2x VAR documentation was required by our class surveyor. EVER POWER supplied within 3 days — faster than any European supplier we approached.” — Chief Engineer, Halifax. |
Frequently Asked Questions
Q: What is the maximum input speed for EP-RPR2800?
A: Standard maximum input speed is 2,000 rpm. A high-speed variant accepting 2,500 rpm input is available for specific applications — contact our engineering team.
Q: How long does a standard delivery take?
A: Standard configured units are available in 6-8 weeks. Fully custom engineered variants typically require 10-14 weeks. We recommend confirming specifications early for project-critical installations.
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.
