설명
EP-PWD3500 Planetary Winch Drive Gearbox – 35,000 Nm
Brevini PWD3500 Compatible Replacement | EVER POWER
그만큼 EP-PWD3500 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 peak output torque with a broad ratio selection covering 30:1 to 250:1, all within a sealed, corrosion-resistant housing designed for the harshest offshore and heavy industrial environments.
제품 개요
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. The EP-PWD3500 incorporates a torsionally flexible coupling interface at the motor end to absorb hydraulic motor torque ripple and protect internal gears from resonance-induced fatigue.
기술적 매개변수
| 매개변수 | 값 |
|---|---|
| 모델 | EP-PWD3500 |
| 교체합니다 | Brevini riduttori PWD3500 |
| 최대 출력 토크 | 35,000 Nm |
| 기어 단계 | 3 – 4 |
| 비율 범위 | 30:1 – 250:1 |
| 최대 입력 속도 | 1,000 rpm |
| 연속 열 제한 | 55kW |
| 백래시 | <= 9 arcmin |
| 주택 자재 | GGG50 ductile iron + marine epoxy coating |
| 매끄럽게 하기 | Synthetic ISO VG 320 (factory filled) |
| 보호 등급 | IP66 (IP68 option) |
| 작동 온도 | -35 degC to +85 degC |
| 대략적인 무게 | ~165 kg |
| Special Feature | Torsional flex coupling interface (motor end) |
작동 원리
Where ratio requirements exceed what a 3-stage design can efficiently provide, the EP-PWD3500 optionally adds a fourth reduction stage within the same external envelope, reaching 250:1 overall ratio without tandem-connecting two separate gearboxes. The torsional flex coupling 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.
핵심 이점
| ◼ Up to 250:1 Single-Unit Ratio Eliminates costly tandem gearbox arrangements for very high reduction needs. |
◼ Torsional Flex Motor Interface Damps motor torque ripple, protecting gear teeth from fatigue at high cycle counts. |
| ◼ Marine-Grade Coating 720+ hour salt spray test. Suitable for offshore C5M corrosion zone. |
◼ -35 degC Cold Start Capable Low-pour-point synthetic oil and cold-rated FKM seals enable Arctic duty. |
| ◼ Compatible Replacement Fit Engineered to match Brevini PWD3500 bolt pattern and shaft dimensions for direct retrofit. |
|
구조 및 재료 기술
The housing is externally coated with a marine-grade two-part epoxy system (total DFT >= 250 microns). Gear materials are 17CrNiMo6 or 18CrNiMo7-6 vacuum-arc-remelted for superior core toughness. The output shaft runs in a double-row tapered roller bearing assembly pre-loaded at the factory to prevent axial play under combined radial/axial rope loads.
일반적인 적용 시나리오
| 산업 | 애플리케이션 | 시나리오 참고 사항 |
|---|---|---|
| 난바다 쪽으로 부는 | AHC (Active Heave Compensation) winch | Frequent direction reversals demand low backlash and torque-ripple damping – both delivered. |
| Subsea | LARS (Launch And Recovery System) | High-ratio (200:1+) allows very precise lowering speed control for ROV deployment. |
| 관로 | Pipe-laying vessel tensioner drive | Continuous high-torque hold combined with slow linear speed – ideal for 3-4 stage design. |
| Heavy Crane | Crawler crane main hoist upgrade | Arctic-rated units deployed in construction projects with no cold-start issues. |
선택 가이드
- AHC or Standard Winch? – AHC applications need the flex coupling and low backlash option.
- Required Ratio – 3-stage for 30:1-150:1; 4-stage for 150:1-250:1.
- Motor Type and Displacement – for proper torque and speed matching.
- Corrosion Zone – C4, C5M (offshore) or CX (very aggressive).
- Temperature Range – Arctic-rated variants use different seals and lubricant; please specify.
Talk to our offshore application specialists for configuration support.
Brevini PWD3500 vs. EVER POWER EP-PWD3500
부인 성명: 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.
| 측면 | Brevini PWD3500 | EVER POWER EP-PWD3500 |
|---|---|---|
| 가격 | European OEM premium | Competitive aftermarket pricing |
| 리드 타임 | 12-20 weeks typical | 4-7주 |
| 최대 비율(단일 단위) | 표준 범위 | Up to 250:1 without tandem connection |
| AHC Motor Interface | Rigid coupling standard | Torsional flex coupling available |
| Arctic Variant | Special order only | Standard catalogue option |
Motor packages: 
matched hydraulic and electric motors supplied by EVER POWER on request.
품질 인증 및 서비스 약속
- ISO 9001:2015 certified quality management system.
- CE 마크 – Machinery Directive 2006/42/EC.
- DNV GL / Bureau Veritas third-party inspection available on request.
- 18개월 보증 – full manufacturing defect coverage.
More at 에버 파워 회사 소개.
사례 연구 – 엔지니어 현장 기록
| 국가 | 애플리케이션 | 피드백 |
|---|---|---|
| United Kingdom | North Sea AHC winch replacement on MPSV | “The flex coupling option was the deciding factor. Our original Brevini had gear wear from motor ripple. The EVER POWER unit has run without that issue for 11 months.” – Chief Engineer, Aberdeen. |
| Russia | Siberian pipeline crawler crane main hoist | “Cold-start at -32 degC in January. No stiffness or unusual noise. The Arctic-spec lubrication clearly works.” – Site Engineer, Yamal Peninsula. |
| Singapore | LARS winch for deep-water ROV support vessel | “EVER POWER delivered all 4 units within 5 weeks, including DNV witness testing.” – Project Engineer, Jurong. |
자주 묻는 질문
Q: Can the EP-PWD3500 be supplied with DNV or BV certification?
A: Yes. Third-party witness testing by DNV GL or Bureau Veritas can be arranged. Please state this at order stage.
Q: Is the flex coupling replaceable in the field?
A: Yes. The torsional flex element is a serviceable cartridge. Replacement coupling sets are held in stock.
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