{"id":2046,"date":"2026-04-17T09:32:45","date_gmt":"2026-04-17T09:32:45","guid":{"rendered":"https:\/\/planetary-gear-box.top\/product\/ep-pwd3700-planetary-winch-drive-gearbox-replacement-of-brevini-riduttori-pwd3700\/"},"modified":"2026-04-17T09:32:45","modified_gmt":"2026-04-17T09:32:45","slug":"ep-pwd3700-planetary-winch-drive-gearbox-replacement-of-brevini-riduttori-pwd3700","status":"publish","type":"product","link":"https:\/\/planetary-gear-box.top\/pt_pt\/produto\/ep-pwd3700-planetary-winch-drive-gearbox-replacement-of-brevini-riduttori-pwd3700\/","title":{"rendered":"EP-PWD3700 Planetary Winch Drive Gearbox Replacement Of Brevini riduttori PWD3700"},"content":{"rendered":"

EP-PWD3700 Extreme-Duty Planetary Winch Drive Gearbox – 37,000 Nm<\/h1>\n

Brevini PWD3700 Compatible Replacement | EVER POWER<\/strong><\/p>\n

The EP-PWD3700<\/strong> is EVER POWER’s flagship planetary winch drive gearbox. Engineered to directly replace the Brevini riduttori PWD3700, this unit achieves a class-leading 37,000 Nm<\/strong> rated output torque and a maximum ratio of 300:1<\/strong>, making it the go-to choice for deepwater crane operators, offshore heavy-lift contractors and extreme-duty industrial hoist builders.<\/p>\n

\"EP-PWD3700<\/p>\n

Product Overview<\/h2>\n

Target applications: deepwater crane main hoists (300 m+ depth), semi-submersible rig drawworks, heavy pipelay tensioner main drives, offshore wind turbine foundation installation cranes, and large-format industrial furnace car drives<\/strong>. The EP-PWD3700 is available with optional integrated oil temperature monitoring<\/strong> and vibration sensor ports<\/strong> for integration into predictive maintenance systems.<\/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-PWD3700<\/td>\n<\/tr>\n
Replaces<\/td>\nBrevini riduttori PWD3700<\/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>\n35:1 – 300:1<\/td>\n<\/tr>\n
Max Input Speed<\/td>\n800 rpm<\/td>\n<\/tr>\n
Continuous Thermal Limit<\/td>\n65 kW<\/td>\n<\/tr>\n
Overload Capacity<\/td>\n3.0x rated torque (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>\nIP66 \/ IP68 optional<\/td>\n<\/tr>\n
Operating Temp.<\/td>\n-35 degC to +90 degC<\/td>\n<\/tr>\n
Approx. Weight<\/td>\n~190 kg<\/td>\n<\/tr>\n
Monitoring Options<\/td>\nOil temp sensor port, vibration sensor boss<\/td>\n<\/tr>\n
Brake Option<\/td>\nSpring wet multi-disc \/ dry disc \/ none<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Working Principle<\/h2>\n

\"EVER<\/p>\n

The EP-PWD3700’s 4-stage planetary arrangement<\/strong> stacks four concentric reduction stages coaxially. Each stage’s planet carrier becomes the sun shaft input to the next, achieving 300:1 reduction in a compact form factor. The output stage bearing pre-load system<\/strong> is factory-set using precision shims so the tapered roller bearing assembly carries both radial rope loads and axial fleet angle loads without play developing over service life. An optional external oil cooler circuit is available for tropical-climate duty above 40 degC ambient.<\/p>\n

Core Advantages<\/h2>\n\n\n\n\n\n\n
★ Class-Leading 37,000 Nm Torque<\/strong>
Top-of-range PWD series capacity – handles the most demanding crane and hoist loads.<\/td>\n		★ 300:1 in a Single Housing<\/strong>
Eliminates tandem gearbox systems, reducing overall drivetrain length and weight.<\/td>\n<\/tr>\n
<\/td>\n<\/tr>\n
★ Condition Monitoring Ready<\/strong>
Oil temperature and vibration sensor ports enable Industry 4.0 predictive maintenance integration.<\/td>\n		★ 3.0x Overload Tolerance<\/strong>
Momentary overload capacity handles unexpected load spikes without gear tooth damage.<\/td>\n<\/tr>\n
<\/td>\n<\/tr>\n
★ C5M Marine Coating + IP68 Option<\/strong>
Full offshore corrosion and immersion protection for the most aggressive environments.<\/td>\n<\/tr>\n<\/table>\n

Structure and Material Technology<\/h2>\n

The EP-PWD3700 uses 18CrNiMo7-6 vacuum-arc-remelted (VAR) steel<\/strong> – the same grade used in aircraft and wind turbine main gearboxes – carburised to 1.0-1.5 mm case depth and ground to DIN ISO 1328 accuracy class 5. The housing interior is shot-peened to improve fatigue resistance. All external fasteners are stainless steel A4-80<\/strong> to prevent galvanic corrosion in offshore installations.<\/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
Deepwater<\/td>\nOffshore heavy crane main hoist (300 m+)<\/td>\n300:1 ratio provides precise positioning at depth with large hydraulic motors.<\/td>\n<\/tr>\n
Oil & Gas<\/td>\nSemi-sub rig drawworks main drive<\/td>\n37,000 Nm handles combined hook and drill-string weight spikes during jarring.<\/td>\n<\/tr>\n
Renewable Energy<\/td>\nOffshore wind monopile upending crane<\/td>\nSlow controlled rotation of 500+ tonne monopiles requires high torque at very low speed.<\/td>\n<\/tr>\n
Steel Industry<\/td>\nEAF electrode positioning drive<\/td>\nPrecise low-speed drive under extreme thermal radiation environment.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Selection Guide<\/h2>\n
    \n
  1. Maximum Hook Load (kN)<\/strong> – Define peak with all rigging dynamic factors applied.<\/li>\n
  2. Required Lowering Speed (m\/min)<\/strong> – Used to derive drum speed and required ratio.<\/li>\n
  3. Number of Part Lines<\/strong> – Affects drum torque calculation.<\/li>\n
  4. Motor Specification<\/strong> – Dual-motor input flanges available for very high torque requirements.<\/li>\n
  5. Monitoring Requirements<\/strong> – State if oil temperature and vibration monitoring ports are needed.<\/li>\n
  6. Classification Society<\/strong> – DNV, BV, ABS, Lloyd’s; third-party inspection arranged accordingly.<\/li>\n<\/ol>\n

    Engage our heavy-lift engineering team<\/a> for a detailed selection study at no cost.<\/p>\n

    Brevini PWD3700 vs. EVER POWER EP-PWD3700<\/h2>\n

    Disclaimer:<\/strong> The Brevini riduttori PWD3700 model is referenced solely to assist customers identifying a functionally compatible alternative. EVER POWER is not affiliated with Brevini. The EP-PWD3700 carries its own original design specifications and independent warranty.<\/p>\n\n\n\n\n\n\n\n\n\n\n
    Aspect<\/th>\nBrevini PWD3700<\/th>\nEVER POWER EP-PWD3700<\/th>\n<\/tr>\n<\/thead>\n
    Price Level<\/td>\nHigh-end OEM Europe<\/td>\nSubstantially lower total cost of ownership<\/td>\n<\/tr>\n
    Lead Time<\/td>\n14-22 weeks standard<\/td>\n5-8 weeks<\/td>\n<\/tr>\n
    Max Ratio<\/td>\nStandard range<\/td>\nUp to 300:1 single unit<\/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>\nAvailable at competitive rate<\/td>\n<\/tr>\n
    Dual-Motor Input<\/td>\nSpecial order<\/td>\nStandard configuration option<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    EVER POWER can supply matched hydraulic piston motors or electric torque motors as a complete drive system.<\/p>\n

    \"EVER
    \n\"EVER<\/p>\n

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