Masson Marine Equipment
MM W4000
Reverse reduction marine gearbox (Masson Marine W range) with ratios 3.077–5.978, max rated input up to 957 kW (1283 hp), dry weight 1270 kg.
Description
The MM W4000 is a reverse reduction marine gearbox from Masson Marine's W range with hydraulically actuated multi-disc clutches, designed for continuous duty in workboat and dredger applications. It is offered with ratios from 3.077 to 5.978 for high-speed engines.
Technical data
- Ratios: 3.077, 3.474, 3.923, 4.258, 4.625, 5.248, 5.978
- Power rating: 0.510 kW/rpm (0.684 hp/rpm) at 3.077 down to 0.262 kW/rpm (0.351 hp/rpm) at 5.978
- Maximum rated input: up to 957 kW (1283 hp)
- Maximum input speed: 1800 rpm (3.077), 2000 rpm (3.474), 2300 rpm (3.923), 2600 rpm (4.258), 2800 rpm (4.625)
- Sample capacities (ratio 3.077): 612 kW (821 hp) at 1200 rpm, 816 kW (1094 hp) at 1600 rpm, 918 kW (1231 hp) at 1800 rpm
- Dry weight: 1270 kg (2800 lb)
Key features
- Robust design with easy onboard maintenance
- Hydraulically actuated multi-disc clutches
- Case-hardened, precision-ground gear teeth for long life and smooth running
- Robust cast iron casing for direct or remote mounting
- Emergency "get home" capability
- Fully works tested; design, manufacture and quality control to ISO standards
- Suitable for twin installation with 100% rated power ahead and astern
Standard equipment
- Oil cooler with fittings and flexible hoses
- Integrated brackets
- Free-standing design
- Lube oil pump
Options
- Engine-matched torsional coupling
- Propeller shaft flange and coupling bolt set
- Classification by all major classification societies
- PTO (live or clutchable)
- Electric trolling valve for slow-speed drive
- Shaft brake
- Electric clutch control
Specifications
| Model | kW/RPM (hp/RPM) | Maximum Rated Input kW (hp) | Maximum RPM | Ratio | Sample Ratio Capacities kW (hp) | Dry Weight kg (lb) | col8 | col9 |
|---|---|---|---|---|---|---|---|---|
| 1200 rpm | 1600 rpm | 1800 rpm | ||||||
| MM W4000 | 0,510 (0,684) | 918 (1231) | 1800 | 3,077 | 612 (821) | 816 (1094) | 918 (1231) | 1270 (2800) |
| 0,451 (0,605) | 902 (1210) | 2000 | 3,474 | 541 (726) | 722 (968) | 812 (1089) | ||
| 0,399 (0,535) | 918 (1231) | 2300 | 3,923 | 479 (642) | 638 (856) | 718 (963) | ||
| 0,368 (0,493) | 957 (1283) | 2600 | 4,258 | 442 (592) | 589 (790) | 662 (888) | ||
| 0,339 (0,455) | 949 (1273) | 2800 | 4,625 | 407 (546) | 542 (727) | 610 (818) | ||
| 0,298 (0,399) | 834 (1118) | 5,248 | 358 (479) | 477 (639) | 536 (719) | |||
| 0,262 (0,351) | 734 (984) | 5,978 | 314 (422) | 419 (562) | 472 (633) |
More from Masson Marine
- Masson Marine MM W2800Y Twin Input Single Output Gearbox
- Masson Marine MM W1950
- Masson Marine EM311
- Masson Marine EM540
- Masson Marine EM611
- Masson Marine Dual Speed Gearboxes (W3300 DS, W3450 DS, W5200 DS)
- Masson Marine E-Range Gearboxes for Synchronous Motors
- Masson Marine MM W3300 DS Dual-Speed Gearbox
- Masson Marine MM W3450 DS Dual-Speed Gearbox
- Masson Marine MM W5200 DS Dual-Speed Gearbox
- Masson Marine PTI Type 1
- Masson Marine PTI Type 1G
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