Masson Marine Equipment
MM W12000 NR
Non-reversing marine reduction gearbox (Masson Marine W range) for workboats and dredgers; ratios 1.522–3.333, max rated input 1711 kW (2295 hp) at up to 1250 rpm, dry weight 2530 kg.
Description
The MM W12000 NR is a non-reversing marine reduction gearbox from Masson Marine's W range, designed for continuous duty in workboat and dredger applications. It is offered with ratios from 1.522 to 3.333 for medium-speed engines up to 1250 rpm.
Technical data
- Ratios: 1.522, 2.053, 2.545, 2.742, 3.034, 3.333
- Power rating: 1.369 kW/rpm (1.836 hp/rpm) for ratios 1.522–3.034; 1.246 kW/rpm (1.671 hp/rpm) for 3.333
- Maximum rated input: 1711 kW (2295 hp); 1558 kW (2089 hp) at ratio 3.333
- Maximum input speed: 1250 rpm
- Sample capacities: 1027 kW (1377 hp) at 750 rpm, 1369 kW (1836 hp) at 1000 rpm, 1643 kW (2203 hp) at 1200 rpm
- Dry weight: 2530 kg (5580 lb)
Key features
- Robust design with easy onboard maintenance
- Hydraulically actuated multi-disc clutch
- 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
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 |
|---|---|---|---|---|---|---|---|---|
| 750 rpm | 1000 rpm | 1200 rpm | ||||||
| MM W12000 | 1,369 (1,836) | 1711 (2295) | 1250 | 1,522 | 1027 (1377) | 1369 (1836) | 1643 (2203) | 2530 (5580) |
| 2,053 | ||||||||
| 2,545 | ||||||||
| 2,742 | ||||||||
| 3,034 | ||||||||
| 1,246 (1,671) | 1558 (2089) | 3,333 | 935 (1253) | 1246 (1671) | 1495 (2005) |
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