{"id":2040,"date":"2026-04-17T09:32:21","date_gmt":"2026-04-17T09:32:21","guid":{"rendered":"https:\/\/planetary-gear-box.top\/product\/ever-power-ep-ctu3700-planetary-gearbox-replacement-of-brevini-riduttori-ctu3700\/"},"modified":"2026-04-17T09:32:21","modified_gmt":"2026-04-17T09:32:21","slug":"ever-power-ep-ctu3700-planetary-gearbox-replacement-of-brevini-riduttori-ctu3700","status":"publish","type":"product","link":"https:\/\/planetary-gear-box.top\/pt_ao\/product\/ever-power-ep-ctu3700-planetary-gearbox-replacement-of-brevini-riduttori-ctu3700\/","title":{"rendered":"EVER POWER EP-CTU3700 Planetary Gearbox Replacement Of Brevini Riduttori CTU3700"},"content":{"rendered":"

EP-CTU3700 Planetary Track Drive Gearbox – 37,000 Nm<\/h1>\n

Brevini CTU3700 Compatible Replacement | EVER POWER<\/strong><\/p>\n

The EP-CTU3700<\/strong> is EVER POWER’s flagship planetary track drive gearbox – the largest in the CTU replacement series. Engineered as a direct replacement for the Brevini riduttori CTU3700, this unit achieves a class-leading 37,000 Nm<\/strong> output torque and a maximum ratio of 300:1<\/strong>, serving the largest tracked mining machines, ultra-heavy crawler cranes, and extreme-duty industrial track systems where no compromise is acceptable.<\/p>\n

\"EP-CTU3700<\/p>\n

Product Overview<\/h2>\n

Target machines: 60-100 t+ hydraulic mining excavators, large Liebherr\/Kobelco\/Hitachi class crawler crane undercarriages, heavy-duty tracked tunnel boring machine backup systems, large offshore jack-up leg drives and extreme-duty industrial track transfer systems<\/strong>. The EP-CTU3700 is available with optional integrated oil temperature and vibration monitoring sensor ports<\/strong>, enabling connection to machine health monitoring and predictive maintenance systems – a feature increasingly demanded by large mining and offshore operators.<\/p>\n

Technical Parameters<\/h2>\n\n\n\n\n\n\n\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-CTU3700<\/td>\n<\/tr>\n
Replaces<\/td>\nBrevini riduttori CTU3700<\/td>\n<\/tr>\n
Max Output Torque<\/td>\n37,000 Nm<\/td>\n<\/tr>\n
Gear Stages<\/td>\n3 – 4<\/td>\n<\/tr>\n
Ratio Range<\/td>\n40:1 – 300:1<\/td>\n<\/tr>\n
Max Input Speed<\/td>\n2,000 rpm<\/td>\n<\/tr>\n
Continuous Thermal Limit<\/td>\n65 kW<\/td>\n<\/tr>\n
Overload Capacity<\/td>\n3.0x rated (momentary)<\/td>\n<\/tr>\n
Housing Material<\/td>\nGGG50 ductile iron + marine epoxy (C5M)<\/td>\n<\/tr>\n
Lubrication<\/td>\nSynthetic ISO VG 320 or PAO VG 460<\/td>\n<\/tr>\n
Protection Class<\/td>\nIP68<\/td>\n<\/tr>\n
Operating Temp.<\/td>\n-35 degC to +90 degC<\/td>\n<\/tr>\n
Approx. Weight<\/td>\n~155 kg<\/td>\n<\/tr>\n
Monitoring Ports<\/td>\nOil temp (PT100 boss), vibration (M8 tapped)<\/td>\n<\/tr>\n
Brake<\/td>\nSpring multi-disc failsafe \/ hydraulic release<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Working Principle<\/h2>\n

\"EVER<\/p>\n

The 4-stage architecture of the EP-CTU3700 stacks four coaxial planetary stages to reach 300:1 ratio<\/strong> from a single housing – eliminating the penalty of mounting two separate gearboxes in series. The factory-preset output bearing pre-load<\/strong> ensures the large-diameter output flange bearing carries combined sprocket chain loads (radial), sprocket offset loads (axial) and overturning moment loads without any play developing over the rated service life.<\/p>\n

The optional condition monitoring sensor suite<\/strong> includes a PT100 temperature probe boss in the oil sump and an M8-threaded accelerometer mounting pad on the housing flange. Data from these sensors can be streamed to any PLC or SCADA system, enabling trending and predictive replacement scheduling – reducing unplanned downtime costs significantly on large high-value machines.<\/p>\n

Core Advantages<\/h2>\n\n\n\n\n\n\n
★ 37,000 Nm Class-Leading Torque<\/strong>
Top of the CTU replacement series – handles the largest tracked machine requirements without compromise.<\/td>\n		★ 300:1 in a Single Unit<\/strong>
No tandem gearbox penalty – saves weight, installation length and maintenance points.<\/td>\n<\/tr>\n
<\/td>\n<\/tr>\n
★ Condition Monitoring Ready<\/strong>
Oil temperature and vibration sensor ports enable full predictive maintenance integration.<\/td>\n		★ 3.0x Momentary Overload<\/strong>
Handles worst-case rock impact and stump strike loads without gear tooth damage.<\/td>\n<\/tr>\n
<\/td>\n<\/tr>\n
★ C5M Marine Epoxy Coating + IP68<\/strong>
Full offshore and mine-site corrosion protection. Suitable for saltwater environments and acid mine drainage zones.<\/td>\n<\/tr>\n<\/table>\n

Structure and Material Technology<\/h2>\n

The EP-CTU3700 uses 18CrNiMo7-6 vacuum-arc-remelted (VAR) steel<\/strong> – the highest available grade for planetary gear applications – carburised to 1.0-1.5 mm and ground to DIN ISO 1328 accuracy class 5. The housing interior is shot-peened<\/strong> to improve fatigue resistance in the gear bore areas. All external fasteners are stainless steel A4-80 grade<\/strong> to prevent galvanic corrosion in wet and chemically contaminated mine environments. The output flange uses a large-bore taper roller bearing assembly<\/strong> factory-shimmed for zero play under full rated combined load.<\/p>\n

Typical Application Scenarios<\/h2>\n\n\n\n\n\n\n\n\n
Industry<\/th>\nMachine Type<\/th>\nWhy CTU3700 Class<\/th>\n<\/tr>\n<\/thead>\n
Mining<\/td>\n80 t+ hydraulic excavator<\/td>\nClass-leading torque handles hard-rock bench digging without gear tooth damage.<\/td>\n<\/tr>\n
Crane<\/td>\nLarge crawler crane undercarriage<\/td>\n300:1 ratio for ultra-slow boom erection travel on soft ground.<\/td>\n<\/tr>\n
Tunnelling<\/td>\nTBM backup crawler system<\/td>\nContinuous slow push against tunnel lining; condition monitoring tracks motor health 24\/7.<\/td>\n<\/tr>\n
Offshore<\/td>\nJack-up rig leg drive<\/td>\nHigh torque + predictive monitoring minimises rig downtime on remote offshore location.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Selection Guide<\/h2>\n
    \n
  1. Machine Class (operating weight, t)<\/strong> – Key input for required drawbar torque calculation.<\/li>\n
  2. Required Ratio<\/strong> – 3-stage for 40:1-120:1; 4-stage for 120:1-300:1.<\/li>\n
  3. Condition Monitoring<\/strong> – Specify if PT100 oil temp probe and vibration sensor boss are required.<\/li>\n
  4. Motor Interface<\/strong> – Provide hydraulic motor model and shaft dimension drawing.<\/li>\n
  5. Environment<\/strong> – Acid mine drainage, saltwater, low temperature; each requires specific seal and coating upgrade.<\/li>\n
  6. Classification Society<\/strong> – For offshore use, state DNV, BV or ABS witnessing requirement at order.<\/li>\n<\/ol>\n

    Engage EVER POWER’s senior application engineers<\/a> for a complete drive package study.<\/p>\n

    Brevini CTU3700 vs. EVER POWER EP-CTU3700<\/h2>\n

    Disclaimer:<\/strong> EVER POWER references the Brevini riduttori CTU3700 model number solely to help customers identify a compatible replacement. We do not manufacture or imply affiliation with Brevini. No intellectual property of Brevini is reproduced. Our replacement unit is an independently designed product that is dimensionally and functionally compatible.<\/p>\n\n\n\n\n\n\n\n\n\n\n
    Aspect<\/th>\nBrevini CTU3700<\/th>\nEVER POWER EP-CTU3700<\/th>\n<\/tr>\n<\/thead>\n
    Price<\/td>\nHigh-end European OEM<\/td>\nSubstantially lower total cost of ownership<\/td>\n<\/tr>\n
    Lead Time<\/td>\n14-22 weeks<\/td>\n5-8 weeks<\/td>\n<\/tr>\n
    Max Ratio (single unit)<\/td>\nStandard range<\/td>\nUp to 300:1<\/td>\n<\/tr>\n
    Condition Monitoring<\/td>\nNot standard<\/td>\nSensor ports standard option<\/td>\n<\/tr>\n
    Class Society Inspection<\/td>\nAvailable at premium<\/td>\nDNV\/BV\/ABS available at competitive rate<\/td>\n<\/tr>\n
    Acid Mine Drainage<\/td>\nStandard coating only<\/td>\nUpgraded A4-80 fasteners + C5M coating<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    EVER POWER supplies matched high-torque hydraulic travel motors for the EP-CTU3700 as a complete certified drive package. Enquire now.<\/a><\/p>\n

    \"EVER<\/p>\n

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