Propulsion Gearbox / Reduction Gear · Propulsion Gearbox
The Reintjes WGF 600 kW 6:1 is an offset marine propulsion reduction gearbox delivering 600 kW at a 6:1 speed reduction (1500 rpm to 250 rpm) with an integrated oil sump and standard pressure lubrication system.
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| Oil sampling/analysis | every 3-6 months |
|---|---|
| Oil filter renewal | per maker's manual, typically every 500-1000 running hours or annually |
| Full oil change | typically every 2-4 years or per maker's manual |
| Clutch inspection | at dry-dock or per maker's running-hour interval |
| Shaft alignment check | at dry-dock or after major engine/gearbox work |
| Clutch plate thickness | renew at the maker's stated minimum thickness, typically expressed as a percentage of new-plate thickness in the manual - confirm the exact figure there |
|---|---|
| Gear backlash | compare against the maker's new-build tolerance; a marked increase indicates tooth wear and warrants inspection |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Reduction gearboxes fall under class Continuous Survey Machinery for propulsion; surveyors typically review oil analysis trends, clutch performance records and alignment records, particularly after main engine or shaft line work.
Estimated lifetime: Marine reduction gearboxes of this type are generally designed for the vessel's full service life (20-25+ years) with periodic renewal of wear parts (seals, clutch plates, bearings) rather than whole-unit replacement - confirm overhaul intervals against the maker's manual
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