Masson Marine Equipment
MM W12200 NR
Non-reversing marine reduction gearbox (Masson Marine W range) for workboats and dredgers; ratios 2.976–4.979, max rated input up to 1680 kW (2253 hp), dry weight 2530 kg.
Description
The MM W12200 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 2.976 to 4.979 for medium-speed engines.
Technical data
- Ratios: 2.976, 3.477, 3.911, 4.405, 4.979
- Power rating: 1.259 kW/rpm (1.688 hp/rpm) at 2.976 down to 0.834 kW/rpm (1.118 hp/rpm) at 4.979
- Maximum rated input: up to 1680 kW (2253 hp)
- Maximum input speed: 1226 rpm (ratio 2.976), 1433 rpm (3.477), 1600 rpm (3.911)
- Sample capacities (ratio 2.976): 944 kW (1266 hp) at 750 rpm, 1260 kW (1688 hp) at 1000 rpm, 1510 kW (2024 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 W12200 NR EW | 1,259 (1,688) | 1544 (2070) | 1226 | 2,976 | 944 (1266) | 1260 (1688) | 1510 (2024) | 2530 (5580) |
| 1,144 (1,534) | 1639 (2198) | 1433 | 3,477 | 858 (1151) | 1144 (1534) | 1373 (1841) | ||
| 1,050 (1,408) | 1680 (2253) | 1600 | 3,911 | 788 (1056) | 1050 (1408) | 1260 (1690) | ||
| 0,943 (1,265) | 1509 (2023) | 4,405 | 707 (948) | 943 (1265) | 1132 (1518) | |||
| 0,834 (1,118) | 1334 (1789) | 4,979 | 626 (839) | 834 (1118) | 1001 (1342) |
More from Masson Marine
- Masson Marine MM W2800Y Twin Input Single Output Gearbox
- Masson Marine MM W1950
- Masson Marine EM311
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- 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
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- Masson Marine MM W5200 DS Dual-Speed Gearbox
- Masson Marine PTI Type 1
- Masson Marine PTI Type 1G
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