Masson Marine Equipment
MM W4400 NR
Masson Marine MM W4400 NR non-reversing reduction marine gearbox, 0.540 kW/rpm, max input 1,134 kW (1,521 hp), max 2,100 rpm, ratios 3.026–5.913, dry weight 1,270 kg; non-clutchable version for electric motors on request.
Description
The MM W4400 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: 0.540 kW/rpm (0.724 hp/rpm)
- Maximum rated input: 1,134 kW (1,521 hp)
- Maximum speed: 2,100 rpm (can be upgraded to 2,300 rpm in specific projects)
- Ratios: 3.026, 3.486, 4.032, 4.448, 5.077, 5.542, 5.913
- Sample capacities: 648 kW (869 hp) at 1,200 rpm, 864 kW (1,159 hp) at 1,600 rpm, 972 kW (1,303 hp) at 1,800 rpm
- Dry weight: 1,270 kg (2,800 lb)
- Non-clutchable version for electric motors available on request
Standard equipment
- Oil cooler with fittings and flexible hoses
- 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
- 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 W4400* | 0,540 (0,724) | 1134 (1521) | 2100* | 3,026 | 648 (869) | 864 (1159) | 972 (1303) | 1270 (2800) |
| 3,486 | ||||||||
| 4,032 | ||||||||
| 4,448 | ||||||||
| 5,077 | ||||||||
| 5,542 | ||||||||
| 5,913 |
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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