{"id":1997,"date":"2026-04-17T09:19:01","date_gmt":"2026-04-17T09:19:01","guid":{"rendered":"https:\/\/planetary-gear-box.top\/product\/ever-power-ep-rpr3800-planetary-gearbox-replacement-of-brevini-riduttori-rpr3800\/"},"modified":"2026-04-17T09:19:01","modified_gmt":"2026-04-17T09:19:01","slug":"ever-power-ep-rpr3800-planetary-gearbox-replacement-of-brevini-riduttori-rpr3800","status":"publish","type":"product","link":"https:\/\/planetary-gear-box.top\/pt_pt\/produto\/ever-power-ep-rpr3800-planetary-gearbox-replacement-of-brevini-riduttori-rpr3800\/","title":{"rendered":"EVER POWER EP-RPR3800 Planetary Gearbox Replacement Of Brevini Riduttori RPR3800"},"content":{"rendered":"

EP-RPR3800 Planetary Gearbox<\/h1>\n

EVER POWER 3-Stage 130,000 Nm Flagship Planetary Gearbox \u2014 Maximum Torque RPR Series<\/p>\n

The EP-RPR3800<\/strong> is EVER POWER’s most powerful planetary gearbox in the RPR series, delivering a class-leading 130,000 Nm<\/strong> output torque with ratio coverage up to 280:1<\/strong> from a 3-stage design. Replacing the Brevini riduttori RPR3800, this is the flagship unit for the largest and most demanding industrial applications \u2014 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<\/strong>.<\/p>\n

\"EP-RPR3800<\/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-RPR3800<\/td>\n<\/tr>\n
Replaces<\/td>\nBrevini riduttori RPR3800<\/td>\n<\/tr>\n
Max Output Torque<\/td>\n130,000 Nm<\/td>\n<\/tr>\n
Gear Stages<\/td>\n3<\/td>\n<\/tr>\n
Ratio Range<\/td>\n35:1 – 280:1<\/td>\n<\/tr>\n
Max Input Speed<\/td>\n1,800 rpm<\/td>\n<\/tr>\n
Protection Class<\/td>\nIP67<\/td>\n<\/tr>\n
Approx. Weight<\/td>\n~330 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Working Principle<\/h2>\n

\"EVER<\/p>\n

Three extra-extra-large-module planetary stages with full oil-jet lubrication and an integrated shell-and-tube oil cooler<\/strong> (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<\/strong> \u2014 the only product in EVER POWER’s range to use five planets \u2014 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<\/strong> for self-aligning load support under housing deflection at 130,000 Nm.<\/p>\n

Core Advantages<\/h2>\n\n\n\n\n
\n
● 130,000 Nm Flagship Torque<\/strong>
Maximum torque in the EVER POWER RPR catalogue \u2014 no compromise.<\/div>\n<\/td>\n
\n
● 5-Planet Output Carrier<\/strong>
Five simultaneous contact points \u2014 lowest per-tooth stress achievable at this torque class.<\/div>\n<\/td>\n<\/tr>\n
\n
● Shell-and-Tube Oil Cooler<\/strong>
45 kW heat rejection \u2014 manages full thermal load at 130,000 Nm continuous.<\/div>\n<\/td>\n
\n
● 2x VAR Steel All Stages<\/strong>
Double vacuum-arc-remelted throughout \u2014 maximum fatigue life under reversing loads.<\/div>\n<\/td>\n<\/tr>\n
\n
● 0.008 mm Output Register TIR<\/strong>
Finest flange register tolerance in the RPR series \u2014 precision coupling alignment.<\/div>\n<\/td>\n
<\/td>\n<\/tr>\n<\/table>\n

Structure and Material Technology<\/h2>\n

\"EVER<\/p>\n

All gears across all three stages use 18CrNiMo7-6 2x VAR steel<\/strong>, 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<\/strong> \u2014 compatible with sea water, river water and cooling tower water. Planet carriers are extra-heavy-section GGG70 nodular iron monobloc forgings<\/strong>. The output flange register diameter is precision-ground to 0.008 mm TIR \u2014 the tightest tolerance in the RPR series.<\/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>\nGiant grinding mill main drive, 8 MW<\/td>\n130,000 Nm at 6,500+ annual hours \u2014 requires 5-planet output and shell-and-tube cooler.<\/td>\n<\/tr>\n
Steel<\/td>\nPrimary hot rolling mill main drive<\/td>\nExtreme reversing torque on rolling reversal \u2014 2x VAR steel essential for fatigue life.<\/td>\n<\/tr>\n
Mining<\/td>\nVery large vertical mill, iron ore pelletising<\/td>\n280:1 ratio drives mill table at correct speed from available standard motors.<\/td>\n<\/tr>\n
Marine<\/td>\nGiant ship propulsion reduction gearbox<\/td>\nShell-and-tube cooler operates on sea water cooling circuit at any ambient.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Selection Guide<\/h2>\n
    \n
  1. Required Output Torque (Nm)<\/strong> \u2014 Confirm peak and continuous torque requirement with appropriate safety factor.<\/li>\n
  2. Gear Ratio<\/strong> \u2014 Motor speed (rpm) divided by required output speed (rpm).<\/li>\n
  3. Duty Cycle<\/strong> \u2014 Continuous S1 or intermittent S3\/S6; affects thermal de-rating.<\/li>\n
  4. Motor Interface<\/strong> \u2014 Flange type (SAE\/ISO), shaft diameter, keyway or spline specification.<\/li>\n
  5. Environment<\/strong> \u2014 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 RPR3800 vs. EVER POWER EP-RPR3800<\/h2>\n

    Important Notice:<\/strong> 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.<\/p>\n\n\n\n\n\n\n\n\n\n
    Aspect<\/th>\nBrevini RPR3800<\/th>\nEVER POWER EP-RPR3800<\/th>\n<\/tr>\n<\/thead>\n
    Price<\/td>\nHighest OEM rate<\/td>\nCompetitive at flagship scale<\/td>\n<\/tr>\n
    Lead Time<\/td>\n16-24 weeks<\/td>\n7-10 weeks<\/td>\n<\/tr>\n
    Output Planet Count<\/td>\n3 or 4 planets<\/td>\n5 planets \u2014 lowest stress<\/td>\n<\/tr>\n
    Cooler<\/td>\nExternal required<\/td>\nShell-and-tube integrated<\/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