Description
EP-PWD3150 Heavy-Duty Planetary Winch Drive Gearbox
Brevini PWD3150 Compatible Replacement | EVER POWER
When continuous-duty offshore or heavy-construction winching demands absolute reliability, the EP-PWD3150 delivers. Engineered by EVER POWER as a form-and-function replacement for the Brevini riduttori PWD3150, this unit provides 31,500 Nm output torque with exceptional fatigue life and sealed performance in hostile environments.
Product Overview
Primary industries: offshore oil and gas, subsea construction vessels, harbour cranes, heavy forestry machines and large industrial hoists. The EP-PWD3150 uses a fully floating ring-gear design that automatically compensates for minor misalignments between the motor and drum, extending service life in high-vibration environments. The unit ships fully oil-filled and tested, with brake-integrated models pre-set for commissioning under two hours.
Technical Parameters
| Parameter | Value |
|---|---|
| Model | EP-PWD3150 |
| Replaces | Brevini riduttori PWD3150 |
| Max Output Torque | 31,500 Nm |
| Gear Stages | 3 |
| Ratio Range | 25:1 – 150:1 |
| Max Input Speed | 1,200 rpm |
| Efficiency | >= 96% (per stage) |
| Backlash | <= 8 arcmin |
| Housing Material | Ductile Iron GGG50 + surface epoxy coat |
| Lubrication | ISO VG 220 synthetic (factory filled) |
| Protection Class | IP66 (IP68 optional) |
| Operating Temp. | -30 degC to +85 degC |
| Approx. Weight | ~120 kg |
| Brake Option | Spring-applied wet multi-disc / dry disc / none |
Working Principle
The EP-PWD3150 utilises a three-stage compound planetary arrangement. Input from the hydraulic motor rotates the first-stage sun gear; the planet carrier of stage 1 becomes the sun gear shaft of stage 2, and similarly for stage 3. This cascading arrangement achieves very high reduction ratios (up to 150:1) in a single coaxial housing. An optional failsafe spring brake located between input and stage 1 holds the load automatically on power loss.
Core Advantages
| ▲ 3-Stage Compound Design Up to 150:1 ratio in one unit – no tandem coupling required. |
▲ Floating Ring Gear Self-compensates for motor/drum misalignment, reducing bearing stress. |
| ▲ IP66 Sealed Withstands high-pressure washdowns and wave splash. |
▲ Pre-Tested Delivery Each unit is pressure-tested and run-in before shipment. |
| ▲ 30-50% Cost Saving vs OEM Comparable technical specification at significantly lower total cost of ownership. |
|
Structure and Material Technology
Housing sections are machined from GGG50 ductile iron, coated in two-component epoxy primer to resist salt spray to ISO 12944-C5M. All gears are made from 17CrNiMo6 case-hardening steel, carburised to 0.8-1.2 mm case depth, then ground to DIN 5 quality. Each planet journal runs on spherical roller bearings to accommodate shock-load spikes up to 2.5x rated torque.
Typical Application Scenarios
| Industry | Application | Scenario Notes |
|---|---|---|
| Offshore O&G | Drill floor drawworks assist winch | Compact form fits moon-pool crane; IP66 withstands sea spray daily. |
| Harbour | Gantry crane trolley drive | High-cycle fatigue life ensures minimal planned maintenance intervals. |
| Forestry | Yarder winch main drum drive | Handles sudden shock loads; floating ring gear protects bearings. |
| Mining | Underground rope hoist | Wet brake meets underground safety regulations for personnel cages. |
Selection Guide
- Peak Torque (Nm) – Include dynamic factor (1.5-2.5 for shock loads).
- Duty Cycle – Continuous, intermittent (S3/S4) or standby.
- Motor Interface – Displacement (cc/rev), max pressure (bar), flange type.
- Output Interface – Drum bore diameter, spline specification (DIN/AGMA).
- Corrosion Zone – C3, C4 or C5M per ISO 12944.
Contact our application engineers for a no-obligation selection report.
Brevini PWD3150 vs. EVER POWER EP-PWD3150
Disclaimer: EVER POWER references Brevini riduttori PWD3150 for cross-reference identification only. Our EP-PWD3150 is an original EVER POWER design. No Brevini trademarks or engineering drawings are reproduced.
| Aspect | Brevini PWD3150 | EVER POWER EP-PWD3150 |
|---|---|---|
| Price | OEM premium tier | Competitive aftermarket rate |
| Delivery | 10-18 weeks typical | 3-6 weeks (stock models faster) |
| Mounting | Original specification | Direct replacement fit |
| Brake Options | Standard range | Wet / dry / none – fully configurable |
| Customisation | Minimal | OEM/ODM drawings accepted |
EVER POWER also provides matched hydraulic and electric motors for a complete drop-in drive assembly.
Quality Certifications and Service Commitment
- ISO 9001:2015 – Full production traceability.
- CE Marking – Compliant with EU Machinery Directive 2006/42/EC.
- 18-month warranty from dispatch date.
- Global logistics; DDP and DAP Incoterms available.
Read our full company profile at EVER POWER About Us.
Case Studies – Engineer Field Notes
| Country | Application | Feedback |
|---|---|---|
| Norway | Offshore supply vessel stern winch, 3 units | “Operating at -28 degC in the Barents Sea with no oil leaks after 14 months.” – Chief Engineer, Bergen. |
| Canada | Logging yarder main drum replacement | “Shock loads are brutal in clear-cut operations. EP-PWD3150 handled them without a single failure in the first season.” – Fleet Manager, British Columbia. |
| South Africa | Gold mine cage hoist upgrade | “EVER POWER supplied full compliance documentation for our safety regulator within 5 days.” – Project Manager, Johannesburg. |
Frequently Asked Questions
Q: What is the maximum rope pull this gearbox supports?
A: With a 200 mm drum radius, rated output torque of 31,500 Nm equates to approximately 157 kN line pull on the first layer.
Q: What oil change interval is recommended?
A: With synthetic ISO VG 220, first change at 500 hours, then every 2,000 hours or annually, whichever comes first.
Partner With EVER POWER
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