Description
ZF W 350-1 5.9 Gearbox
The ZF W 350-1 (also known as ZFW 350-1 or IRM 350-1) with a 5.955:1 gear ratio is a robust, heavy-duty marine transmission. It handles ratings up to roughly 426 kW (570 hp) at 1800 rpm, featuring reverse reduction capabilities, an SAE-1 housing, and an integrated oil cooler and filter setup.
Key Specifications
- Model: ZF W 350-1 (W350.1 / IRM 350)
- Gear Ratio: 5.955:1 (often listed as 5.9 or 5.95:1)
- Max Input Speed: 1800 rpm (standard continuous/medium duty)
- Bell Housing: SAE 1
- Input Coupling: 14-inch flexible coupling compatible
- Application: Commercial and pleasure craft marine propulsion systems with high-reduction requirements
Design and Maintenance Highlights
- Robust Build: Engineered for continuous heavy-duty operation to absorb high torque at deep gear reductions.
- Auxiliaries: Equipped with standard ports for oil cooling and filtering to maintain safe operating temperatures under heavy load.
- Fluid Check: Requires checking oil levels via dipstick roughly two minutes after shutting down the marine engine
The ZF W 350-1 is a heavy-duty, reverse-reduction marine gearbox constructed with a durable cast iron housing to handle rigorous commercial environments.
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