Masson Marine Equipment
MM W1900 NR
Masson Marine MM W1900 NR non-reversing reduction marine gearbox, 0.189 kW/rpm, max input 529 kW (710 hp), max 2,800 rpm, ratios 1.057–3.000, dry weight 410 kg.
Description
The MM W1900 NR is a non-reversing reduction marine gearbox from Masson Marine's W range, built for continuous duty in workboat and dredger applications.
Key features
- Reduction marine transmission with 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
- Suitable for twin installation with 100% rated power ahead and astern
- Robust design with easy onboard maintenance; fully works-tested and simple to install
- Design, manufacture and quality control to ISO standards
Technical data
- Rating: 0.189 kW/rpm (0.253 hp/rpm) for ratios 1.057–2.429; 0.155 kW/rpm (0.208 hp/rpm) at 3.000
- Maximum rated input: 529 kW (710 hp)
- Maximum speed: 2,800 rpm
- Ratios: 1.057, 1.483, 2.000, 2.429, 3.000
- Sample capacities (0.189 kW/rpm): 340 kW (456 hp) at 1,800 rpm, 397 kW (532 hp) at 2,100 rpm, 454 kW (608 hp) at 2,400 rpm
- Dry weight: 410 kg (907 lb)
Standard equipment
- Oil cooler with fittings and flexible hoses
- Integrated brackets
- Free standing
- Lube oil pump
Options
- Engine-matched torsional coupling
- Propeller shaft flange and coupling bolt set
- Classification by all major classification societies on request
- 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 |
|---|---|---|---|---|---|---|---|---|
| 1800 rpm | 2100 rpm | 2400 rpm | ||||||
| MM W1900 | 0,189 (0,253) | 529 (710) | 2800 | 1,057 | 340 (456) | 397 (532) | 454 (608) | 410 (907) |
| 1,483 | ||||||||
| 2,000 | ||||||||
| 2,429 | ||||||||
| 0,155 (0,208) | 434 (582) | 3,000 | 279 (374) | 326 (437) | 372 (499) |
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