{"id":1992,"date":"2026-04-17T09:05:00","date_gmt":"2026-04-17T09:05:00","guid":{"rendered":"https:\/\/planetary-gear-box.top\/product\/ever-power-ep-rpr3320-planetary-gearbox-replacement-of-brevini-riduttori-rpr3320-2\/"},"modified":"2026-04-17T09:05:00","modified_gmt":"2026-04-17T09:05:00","slug":"ever-power-ep-rpr3320-planetary-gearbox-replacement-of-brevini-riduttori-rpr3320-2","status":"publish","type":"product","link":"https:\/\/planetary-gear-box.top\/tr\/urun\/ever-power-ep-rpr3320-planetary-gearbox-replacement-of-brevini-riduttori-rpr3320-2\/","title":{"rendered":"EVER POWER EP-RPR3320 Planetary Gearbox Replacement Of Brevini Riduttori RPR3320"},"content":{"rendered":"

EP-RPR3320 Planetary Gearbox<\/h1>\n

EVER POWER 3-Stage 55,000 Nm Planetary Gearbox for Ultra-Heavy Industrial Drives<\/p>\n

The EP-RPR3320<\/strong> is one of EVER POWER’s highest-torque RPR series units, delivering 55,000 Nm<\/strong> with a ratio range extending to 220:1<\/strong> from a 3-stage planetary housing. Replacing the Brevini riduttori RPR3320, this unit serves the most demanding segment of heavy process engineering ?? cement mill main drives, large ship thrusters, heavy ore processing equipment, large industrial centrifuge drives and ultra-heavy agitator systems<\/strong>.<\/p>\n

\"EP-RPR3320<\/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-RPR3320<\/td>\n<\/tr>\n
Replaces<\/td>\nBrevini riduttori RPR3320<\/td>\n<\/tr>\n
Max Output Torque<\/td>\n55,000 Nm<\/td>\n<\/tr>\n
Gear Stages<\/td>\n3<\/td>\n<\/tr>\n
Ratio Range<\/td>\n30:1 – 220:1<\/td>\n<\/tr>\n
Max Input Speed<\/td>\n2,200 rpm<\/td>\n<\/tr>\n
Protection Class<\/td>\nIP67<\/td>\n<\/tr>\n
Approx. Weight<\/td>\n~135 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Working Principle<\/h2>\n

\"EVER<\/p>\n

Three stages of large-module planetary gearing cascade torque multiplication to the output. The double-wall housing construction<\/strong> ?? an inner structural ring plus outer seal housing ?? provides maximum rigidity against the gear separation forces generated at 55,000 Nm, preventing the housing bore distortion that can occur in single-wall designs and lead to ring gear fretting. The output shaft is a forged hollow quill shaft<\/strong> accepting direct coupling to large hollow-bore driven machines.<\/p>\n

Core Advantages<\/h2>\n\n\n\n\n
\n
◼ 55,000 Nm Class Torque<\/strong>
One of the highest torque ratings in the RPR series.<\/div>\n<\/td>\n
\n
◼ VAR Steel Throughout All Stages<\/strong>
Full VAR build ?? not just output stage ?? maximum fatigue life at every gear contact.<\/div>\n<\/td>\n<\/tr>\n
\n
◼ Double-Wall Housing<\/strong>
Prevents bore distortion under 55,000 Nm continuous loading.<\/div>\n<\/td>\n
\n
◼ Hollow Quill Shaft Output<\/strong>
Direct coupling to large hollow-bore driven shafts without separate coupling.<\/div>\n<\/td>\n<\/tr>\n
\n
◼ Direct RPR3320 Replacement<\/strong>
Matching flange dimensions.<\/div>\n<\/td>\n
<\/td>\n<\/tr>\n<\/table>\n

Structure and Material Technology<\/h2>\n

\"EVER<\/p>\n

All gear stages use 18CrNiMo7-6 VAR steel<\/strong> throughout ?? not just the output stage. Carburising depth is 1.1-1.5 mm across all stages; tooth profiles are ground to ISO 1328 class 5. The double-wall housing is cast from GGG70 nodular iron<\/strong> and stress-relieved before final machining. Output shaft bearing is a large-bore spherical roller bearing pair<\/strong> for self-aligning load support on large hollow quill shaft 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
Cement<\/td>\nCement ball mill main drive<\/td>\n55,000 Nm sustained over 8,000 hours\/year ?? requires VAR steel for fatigue life.<\/td>\n<\/tr>\n
Marine<\/td>\nLarge Azimuth thruster drive<\/td>\n220:1 ratio provides slow reliable thrust direction change.<\/td>\n<\/tr>\n
Mining<\/td>\nLarge ore SAG mill drive<\/td>\nDouble-wall housing prevents bore distortion under continuous high-torque loading.<\/td>\n<\/tr>\n
Chemical<\/td>\nUltra-heavy agitator, polymer reactor<\/td>\nHollow quill shaft allows direct drive coupling to agitator shaft.<\/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 RPR3320 vs. EVER POWER EP-RPR3320<\/h2>\n

    Important Notice:<\/strong> EVER POWER references the Brevini riduttori RPR3320 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-RPR3320 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 RPR3320<\/th>\nEVER POWER EP-RPR3320<\/th>\n<\/tr>\n<\/thead>\n
    Price<\/td>\nVery high OEM rate<\/td>\nCompetitive on large-unit basis<\/td>\n<\/tr>\n
    Lead Time<\/td>\n12-20 weeks<\/td>\n5-8 weeks<\/td>\n<\/tr>\n
    Steel Grade<\/td>\nStandard in stages 1-2<\/td>\nVAR throughout all stages<\/td>\n<\/tr>\n
    Housing<\/td>\nSingle wall<\/td>\nDouble wall anti-distortion<\/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