{"id":1976,"date":"2026-04-17T09:00:11","date_gmt":"2026-04-17T09:00:11","guid":{"rendered":"https:\/\/planetary-gear-box.top\/product\/ever-power-ep-rpr3250-planetary-gearbox-replacement-of-brevini-riduttori-rpr3250\/"},"modified":"2026-04-17T09:00:11","modified_gmt":"2026-04-17T09:00:11","slug":"ever-power-ep-rpr3250-planetary-gearbox-replacement-of-brevini-riduttori-rpr3250","status":"publish","type":"product","link":"https:\/\/planetary-gear-box.top\/es_pe\/product\/ever-power-ep-rpr3250-planetary-gearbox-replacement-of-brevini-riduttori-rpr3250\/","title":{"rendered":"EVER POWER EP-RPR3250 Planetary Gearbox Replacement Of Brevini Riduttori RPR3250"},"content":{"rendered":"

EP-RPR3250 Planetary Gearbox<\/h1>\n

EVER POWER 3-Stage 42,000 Nm Planetary Gearbox with Ultra-High Ratio<\/p>\n

The EP-RPR3250<\/strong> raises output torque to 42,000 Nm<\/strong> and extends ratio coverage to 200:1<\/strong> by adding a third stage to the RPR250 housing. Replacing the Brevini riduttori RPR3250, this unit covers the most demanding segment of the RPR250 size class ?? slow-speed heavy crane drives, large offshore mooring winch main drives, heavy mixer main drives and industrial kiln drives<\/strong> where very high torque and very slow output speed are simultaneously required.<\/p>\n

\"EP-RPR3250<\/p>\n

Technical Parameters<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Model<\/td>\nEP-RPR3250<\/td>\n<\/tr>\n
Replaces<\/td>\nBrevini riduttori RPR3250<\/td>\n<\/tr>\n
Max Output Torque<\/td>\n42,000 Nm<\/td>\n<\/tr>\n
Gear Stages<\/td>\n3<\/td>\n<\/tr>\n
Ratio Range<\/td>\n28:1 – 200:1<\/td>\n<\/tr>\n
Max Input Speed<\/td>\n2,500 rpm<\/td>\n<\/tr>\n
Protection Class<\/td>\nIP66<\/td>\n<\/tr>\n
Approx. Weight<\/td>\n~95 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Working Principle<\/h2>\n

\"EVER<\/p>\n

The 3-stage architecture provides a cumulative 200:1 ratio from a single housing. The 4-planet output carrier<\/strong> distributes final stage torque across four simultaneous contact points rather than the standard three, reducing per-tooth stress by 25% at 42,000 Nm. A dual lip seal with intermediate grease pocket<\/strong> at the output shaft provides redundant sealing against the high-viscosity gear oils used at this torque class.<\/p>\n

Core Advantages<\/h2>\n\n\n\n\n
\n
▲ 200:1 Ultra-High Ratio<\/strong>
Single housing replaces tandem gearbox arrangements for extreme reduction ratios.<\/div>\n<\/td>\n
\n
▲ 4-Planet Output Stage<\/strong>
25% lower tooth stress ?? extended fatigue life under repeated peak loads.<\/div>\n<\/td>\n<\/tr>\n
\n
▲ VAR Steel Output Stage<\/strong>
Aircraft-grade steel in output gears ?? maximum fatigue life at 42,000 Nm.<\/div>\n<\/td>\n
\n
▲ Dual Lip + Grease Pocket<\/strong>
Redundant output shaft sealing for long seal life with high-viscosity oils.<\/div>\n<\/td>\n<\/tr>\n
\n
▲ Direct RPR3250 Replacement<\/strong>
Same flange and port layout.<\/div>\n<\/td>\n
<\/td>\n<\/tr>\n<\/table>\n

Structure and Material Technology<\/h2>\n

\"EVER<\/p>\n

Output stage planet gears use 18CrNiMo7-6 vacuum-arc-remelted (VAR) steel<\/strong> ?? the highest available grade ?? for maximum fatigue life at 42,000 Nm. Housing is GGG70 nodular iron<\/strong> with shot-peened bore zones for improved fatigue resistance. External coating is C5M marine epoxy<\/strong> (720-hour salt spray) for offshore and coastal installations.<\/p>\n

Typical Application Scenarios<\/h2>\n\n\n\n\n\n\n\n\n
Industry<\/th>\nApplication<\/th>\nKey Requirement<\/th>\n<\/tr>\n<\/thead>\n
Crane<\/td>\nHeavy slewing crane main travel drive<\/td>\n200:1 ratio allows low-speed precise positioning with standard large hydraulic motor.<\/td>\n<\/tr>\n
Offshore<\/td>\nMooring winch main drive<\/td>\n4-planet output stage handles repeated peak mooring loads without tooth damage.<\/td>\n<\/tr>\n
Industrial<\/td>\nLarge industrial kiln drive<\/td>\nVery slow rotation (1-3 rpm) of multi-tonne kiln shell requires 200:1 ratio.<\/td>\n<\/tr>\n
Mixing<\/td>\nLarge industrial agitator<\/td>\n42,000 Nm handles thick material mixing without stall at startup.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Selection Guide<\/h2>\n
    \n
  1. Required Output Torque (Nm)<\/strong> ?? Confirm peak and continuous torque requirement with appropriate safety factor.<\/li>\n
  2. Gear Ratio<\/strong> ?? Motor speed (rpm) divided by required output speed (rpm).<\/li>\n
  3. Duty Cycle<\/strong> ?? Continuous S1 or intermittent S3\/S6; affects thermal de-rating.<\/li>\n
  4. Motor Interface<\/strong> ?? Flange type (SAE\/ISO), shaft diameter, keyway or spline specification.<\/li>\n
  5. Environment<\/strong> ?? IP class, ambient temperature, corrosion zone, orientation.<\/li>\n<\/ol>\n

    Contact our engineering team<\/a> for a free application sizing review.<\/p>\n

    Brevini RPR3250 vs. EVER POWER EP-RPR3250<\/h2>\n

    Important Notice:<\/strong> EVER POWER references the Brevini riduttori RPR3250 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-RPR3250 is an independently designed and manufactured product that is dimensionally and functionally compatible.<\/p>\n\n\n\n\n\n\n\n\n\n
    Aspect<\/th>\nBrevini RPR3250<\/th>\nEVER POWER EP-RPR3250<\/th>\n<\/tr>\n<\/thead>\n
    Price<\/td>\nHigh OEM rate<\/td>\nCompetitive<\/td>\n<\/tr>\n
    Lead Time<\/td>\n10-18 weeks<\/td>\n4-6 weeks<\/td>\n<\/tr>\n
    Output Stage Steel<\/td>\nStandard alloy<\/td>\nVAR steel standard<\/td>\n<\/tr>\n
    Max Ratio<\/td>\nStandard<\/td>\n200:1 single unit<\/td>\n<\/tr>\n
    Warranty<\/td>\n12 months<\/td>\n18 months<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \"EVER
    \nEVER POWER also supplies matched electric and hydraulic motors<\/strong> for complete drive system packages. Enquire about motor pairing.<\/a><\/p>\n

    Quality Certifications and Service Commitment<\/h2>\n