Reintjes WGF 3000kW 5:1
The Reintjes WGF 3000 kW 5:1 is an offset marine propulsion gearbox delivering up to 3 MW at a 5:1 reduction, designed for compact installation and integrated oil‑lubrication.
Inspector Detail
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Common issues
- Gear tooth wear or pitting from insufficient lubrication or oil contamination
- Bearing wear leading to increased noise, vibration, or axial play
- Oil contamination from water ingress at seals or metallic wear particles degrading lubrication
- Clutch or coupling wear on the input side
- Seal leakage at input/output shafts
- Vibration from misalignment with the main engine or propeller shaft
- Overheating from cooler fouling or low oil level
Inspection checklist
- Take an oil sample for viscosity, water content, and metal particle count
- Check gear backlash and bearing axial/radial play against maker tolerances
- Inspect input and output shaft seals for leakage
- Verify alignment with the main engine and propeller shaft
- Check the oil cooler for fouling and confirm oil temperature is within normal range
- Inspect clutch engagement pressure/response (if fitted) against specification
- Check mounting bolts and foundation for looseness
- Trend vibration readings if monitoring equipment is fitted
- Verify local and emergency control functions
Service intervals
| Oil sample analysis | typically every 500 hours or every 6 months, whichever comes first |
| Full oil change | typically every 4,000-6,000 hours or per oil analysis result - confirm against Reintjes's own schedule |
| Alignment check | typically annually or after any drivetrain disturbance |
| Filter element change | typically every 500-1,000 hours or on differential pressure indication |
| Major bearing/gear inspection | typically every 12,000-20,000 hours or aligned with the class survey interval |
Typical wear limits
| Gear backlash | flag for inspection once measured backlash exceeds the maker's as-new value by roughly 50-100% - confirm against Reintjes's own tolerance table |
| Bearing axial play | typically flagged once play exceeds as-new clearance by a few tenths of a millimetre - confirm against maker limits for this gearbox size |
| Oil water content | flag for action above roughly 0.1-0.2% water content by volume, trended against baseline |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Critical spares
- Input/output shaft seals
- Oil filter elements
- Clutch friction plates (if fitted)
- Input/output shaft bearings
- Oil cooler gaskets/seals
- Coupling elements
Safety
- Rotating shaft guards must be in place before running
- Hot oil and casing surfaces near the cooler
- Hydraulic clutch system pressure where fitted
- Lifting hazards during any bearing/gear overhaul - heavy components require rated lifting gear
- Lockout required before working on the drivetrain
Class survey
Class surveys of propulsion gearboxes typically check oil analysis trend records and alignment records after any disturbance, and confirm no unauthorized modification to the reduction ratio or clutch system. Gearboxes integrated with a CSM main engine may be surveyed on the same continuous-survey cycle.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Visual inspection with endoscope/borescope after removal of inspection floor covers (port side, standard 2 pieces). Check for discoloration, scratches and spalling of tooth flanks. Superficial pitting can indicate accelerated failure.
Rolling bearings inspect visually with endoscope camera (in particular PTO shaft and countershaft). Watch for discoloration on outer ring (thermal damage), scratches or surface roughness defects on rolling elements. Scan bearing housings with stethoscope or ultrasonic detector: abnormal noise (grinding, clicking, squealing) indicates wear.
Every 6 months take oil sample and analyze laboratory-geometrically. Visual inspection: oil color (dark = abnormal), particles or combustion traces, water ingress (turbidity). Perform oil change with filter element replacement. First time after 200 operating hours, then every 2000 hours or 6 months.
Check operating pressure (21–25 bar standard). Inspect disc chatter for wear, contamination and functionality. Check coupling piston, return springs, O-rings and pressure valve. In case of overhaul replace disc chatter, retainer ring sets and springs.
Check shafts with runout gauge for deflection (target value is model-specific). Check bearing seats for wear or damage. Inspect shaft shoulders and fit surfaces. In case of overhaul check shafts for scratches/cracks with surface roughness gauge (Reintjes manufacture: pinion and reduction shafts are crack-tested/stress-relieved).
External inspections: check aluminum or steel housing for oil leakage, corrosion and mechanical damage. Check inspection floor covers and O-rings for wear. Check oil level at sight glass (should be between min/max). Check shaft seal ring locations and wear rings for roughness and scratches.
Type-general inspection and maintenance points for this equipment category — not model-specific.
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