Full hydraulic operation, lightweight, compact & rugged.
The PRM 500 gearbox is purposely built for use in both pleasure craft and commercial boats; its twin countershaft design provides separate oil-operated multi-disc clutches (which need no adjustment) for ahead and astern drive allowing full rated power to be transmitted continuously in either direction.
Download: Installation Drawing | User Manual
Nominal Power Ratings, PRM 500 Gearbox
| Model | Ahead Ratio | Pleasure | Light Commercial | Heavy Commercial | |||
| kW | BHP | kW | BHP | kW | BHP | ||
| 500D1.5 | 1.459:1 | 4.76 | 6.38 | 4.62 | 6.19 | 4.40 | 5.90 |
| 500D2 | 1.935:1 | ||||||
| 500D2.5 | 2.565:1 | 4.62 | 6.19 | 4.40 | 5.90 | 4.40 | 5.90 |
| 500D3 | 2.904:1 | ||||||
Maximum operating speeds: 4500 rev/min intermittent, 4000 rev/min continuous
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