Masson Marine Equipment
EM311
Masson Marine EM311 clutchless E-range marine gearbox for electric propulsion, 0.311 kW/rpm, max input 684 kW (917 hp), max 2,200 rpm, ratios 2.488–6.700, dry weight 887 kg.
Description
The EM311 is a Masson Marine E-range gearbox designed for electric propulsion with synchronous motors. Based on the standard reverse gear design, the E-range has no clutch, reducing weight, cost and maintenance.
Key features
- Robust design that withstands continuous duty in workboat and dredger applications
- Case-hardened, precision-ground gear teeth for long life and smooth running
- Robust cast iron casing for direct or remote mounting
- Suitable for twin installation with 100% rated power ahead and astern
- Fully works-tested and simple to install
Technical data
- Rating: 0.311 kW/rpm (0.417 hp/rpm) for ratios 2.488–6.000; 0.252 kW/rpm (0.338 hp/rpm) at 6.700
- Maximum rated input: 684 kW (917 hp)
- Maximum speed: 2,200 rpm
- Ratios: 2.488, 2.947, 3.471, 4.067, 4.464, 5.120, 5.417, 6.000, 6.700
- Sample capacities: 373 kW (500 hp) at 1,200 rpm, 497 kW (667 hp) at 1,600 rpm, 560 kW (750 hp) at 1,800 rpm
- Dry weight: 887 kg (1,955.5 lb)
Standard equipment
- Oil cooler with fittings and rigid pipes
- Free standing
- Lube oil pump
Options
- Propeller shaft flange and coupling bolt set
- Classification by all major classification societies on request
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 | ||||||
| EM 311 | 0,311 (0,417) | 684 (917) | 2200 | 2,488 | 373 (500) | 497 (667) | 560 (750) | 887 (1955.5) |
| 2,947 | ||||||||
| 3,471 | ||||||||
| 4,067 | ||||||||
| 4,464 | ||||||||
| 5,120 | ||||||||
| 5,417 | ||||||||
| 6,000 | ||||||||
| 0,252 (0,338) | 554 (743) | 6,700 | 302 (405) | 403 (540) | 453 (608) |
More from Masson Marine
- Masson Marine MM W2800Y Twin Input Single Output Gearbox
- Masson Marine MM W1950
- 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
- Masson Marine PTI Type 2 & 3
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