{"id":2045,"date":"2026-04-17T09:32:22","date_gmt":"2026-04-17T09:32:22","guid":{"rendered":"https:\/\/planetary-gear-box.top\/product\/ep-pwd3500-planetary-winch-drive-gearbox-replacement-of-brevini-riduttori-pwd3500\/"},"modified":"2026-04-17T09:32:22","modified_gmt":"2026-04-17T09:32:22","slug":"ep-pwd3500-planetary-winch-drive-gearbox-replacement-of-brevini-riduttori-pwd3500","status":"publish","type":"product","link":"https:\/\/planetary-gear-box.top\/es_es\/producto\/ep-pwd3500-planetary-winch-drive-gearbox-replacement-of-brevini-riduttori-pwd3500\/","title":{"rendered":"EP-PWD3500 Planetary Winch Drive Gearbox Replacement Of Brevini riduttori PWD3500"},"content":{"rendered":"

EP-PWD3500 Planetary Winch Drive Gearbox – 35,000 Nm<\/h1>\n

Brevini PWD3500 Compatible Replacement | EVER POWER<\/strong><\/p>\n

The EP-PWD3500<\/strong> is EVER POWER’s solution for applications where standard-size gearboxes cannot handle the torque or duty. Replacing the Brevini riduttori PWD3500, this 3-to-4-stage planetary drive delivers 35,000 Nm<\/strong> peak output torque with a broad ratio selection covering 30:1 to 250:1<\/strong>, all within a sealed, corrosion-resistant housing designed for the harshest offshore and heavy industrial environments.<\/p>\n

\"EP-PWD3500<\/p>\n

Product Overview<\/h2>\n

Served industries: offshore pipe-laying vessels, active heave compensation (AHC) winch systems, large crawler and ring cranes, ROV launch and recovery systems (LARS), and subsea cable tensioners<\/strong>. The EP-PWD3500 incorporates a torsionally flexible coupling interface<\/strong> at the motor end to absorb hydraulic motor torque ripple and protect internal gears from resonance-induced fatigue.<\/p>\n

Technical Parameters<\/h2>\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-PWD3500<\/td>\n<\/tr>\n
Replaces<\/td>\nBrevini riduttori PWD3500<\/td>\n<\/tr>\n
Max Output Torque<\/td>\n35,000 Nm<\/td>\n<\/tr>\n
Gear Stages<\/td>\n3 – 4<\/td>\n<\/tr>\n
Ratio Range<\/td>\n30:1 – 250:1<\/td>\n<\/tr>\n
Max Input Speed<\/td>\n1,000 rpm<\/td>\n<\/tr>\n
Continuous Thermal Limit<\/td>\n55 kW<\/td>\n<\/tr>\n
Backlash<\/td>\n<= 9 arcmin<\/td>\n<\/tr>\n
Housing Material<\/td>\nGGG50 ductile iron + marine epoxy coating<\/td>\n<\/tr>\n
Lubrication<\/td>\nSynthetic ISO VG 320 (factory filled)<\/td>\n<\/tr>\n
Protection Class<\/td>\nIP66 (IP68 option)<\/td>\n<\/tr>\n
Operating Temp.<\/td>\n-35 degC to +85 degC<\/td>\n<\/tr>\n
Approx. Weight<\/td>\n~165 kg<\/td>\n<\/tr>\n
Special Feature<\/td>\nTorsional flex coupling interface (motor end)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Working Principle<\/h2>\n

Where ratio requirements exceed what a 3-stage design can efficiently provide, the EP-PWD3500 optionally adds a fourth reduction stage<\/strong> within the same external envelope, reaching 250:1 overall ratio<\/strong> without tandem-connecting two separate gearboxes. The torsional flex coupling<\/strong> at the motor interface absorbs cyclic torque ripple from hydraulic motors (typically 5-15% ripple amplitude), preventing resonant excitation of the planetary gear mesh – especially important in AHC applications where motor speed and direction reverse frequently.<\/p>\n

Core Advantages<\/h2>\n\n\n\n\n\n\n
◼ Up to 250:1 Single-Unit Ratio<\/strong>
Eliminates costly tandem gearbox arrangements for very high reduction needs.<\/td>\n		◼ Torsional Flex Motor Interface<\/strong>
Damps motor torque ripple, protecting gear teeth from fatigue at high cycle counts.<\/td>\n<\/tr>\n
<\/td>\n<\/tr>\n
◼ Marine-Grade Coating<\/strong>
720+ hour salt spray test. Suitable for offshore C5M corrosion zone.<\/td>\n		◼ -35 degC Cold Start Capable<\/strong>
Low-pour-point synthetic oil and cold-rated FKM seals enable Arctic duty.<\/td>\n<\/tr>\n
<\/td>\n<\/tr>\n
◼ Compatible Replacement Fit<\/strong>
Engineered to match Brevini PWD3500 bolt pattern and shaft dimensions for direct retrofit.<\/td>\n<\/tr>\n<\/table>\n

Structure and Material Technology<\/h2>\n

\"Heavy<\/p>\n

The housing is externally coated with a marine-grade two-part epoxy system<\/strong> (total DFT >= 250 microns). Gear materials are 17CrNiMo6 or 18CrNiMo7-6<\/strong> vacuum-arc-remelted for superior core toughness. The output shaft runs in a double-row tapered roller bearing assembly<\/strong> pre-loaded at the factory to prevent axial play under combined radial\/axial rope loads.<\/p>\n

Typical Application Scenarios<\/h2>\n\n\n\n\n\n\n\n\n
Industry<\/th>\nApplication<\/th>\nScenario Notes<\/th>\n<\/tr>\n<\/thead>\n
Offshore<\/td>\nAHC (Active Heave Compensation) winch<\/td>\nFrequent direction reversals demand low backlash and torque-ripple damping – both delivered.<\/td>\n<\/tr>\n
Subsea<\/td>\nLARS (Launch And Recovery System)<\/td>\nHigh-ratio (200:1+) allows very precise lowering speed control for ROV deployment.<\/td>\n<\/tr>\n
Pipeline<\/td>\nPipe-laying vessel tensioner drive<\/td>\nContinuous high-torque hold combined with slow linear speed – ideal for 3-4 stage design.<\/td>\n<\/tr>\n
Heavy Crane<\/td>\nCrawler crane main hoist upgrade<\/td>\nArctic-rated units deployed in construction projects with no cold-start issues.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Selection Guide<\/h2>\n
    \n
  1. AHC or Standard Winch?<\/strong> – AHC applications need the flex coupling and low backlash option.<\/li>\n
  2. Required Ratio<\/strong> – 3-stage for 30:1-150:1; 4-stage for 150:1-250:1.<\/li>\n
  3. Motor Type and Displacement<\/strong> – for proper torque and speed matching.<\/li>\n
  4. Corrosion Zone<\/strong> – C4, C5M (offshore) or CX (very aggressive).<\/li>\n
  5. Temperature Range<\/strong> – Arctic-rated variants use different seals and lubricant; please specify.<\/li>\n<\/ol>\n

    Talk to our offshore application specialists<\/a> for configuration support.<\/p>\n

    Brevini PWD3500 vs. EVER POWER EP-PWD3500<\/h2>\n

    Disclaimer:<\/strong> Brevini riduttori PWD3500 is referenced for cross-reference assistance only. EVER POWER is an independent manufacturer. This listing does not imply any partnership with or endorsement by Brevini.<\/p>\n\n\n\n\n\n\n\n\n\n
    Aspect<\/th>\nBrevini PWD3500<\/th>\nEVER POWER EP-PWD3500<\/th>\n<\/tr>\n<\/thead>\n
    Price<\/td>\nEuropean OEM premium<\/td>\nCompetitive aftermarket pricing<\/td>\n<\/tr>\n
    Lead Time<\/td>\n12-20 weeks typical<\/td>\n4-7 weeks<\/td>\n<\/tr>\n
    Max Ratio (single unit)<\/td>\nStandard range<\/td>\nUp to 250:1 without tandem connection<\/td>\n<\/tr>\n
    AHC Motor Interface<\/td>\nRigid coupling standard<\/td>\nTorsional flex coupling available<\/td>\n<\/tr>\n
    Arctic Variant<\/td>\nSpecial order only<\/td>\nStandard catalogue option<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Motor packages: \"EVER
    \nmatched hydraulic and electric motors supplied by EVER POWER on request.<\/p>\n

    \"EVER<\/p>\n

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