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MAN ES Turbocharging

NR-V NR29/V

Turbocharger · Turbochargers

Technical data from manufacturer or class sources · not yet verified by a person​‍​‍⁠⁠​‍⁠​⁠‌‌⁠‍⁠​‌​‍

MAN ES Turbocharging NR-V NR29/V — NR-V, 6500 kW max.

Specifications

Technical data.reference — unverified

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Frame SizeNR29/V
Power max (kW)6500
Inspection

Inspector Detail ✓ verified

Common issues

  • Compressor wheel fouling due to dirty or salty air
  • Turbine blade erosion from high-temperature exhaust gases
  • Bearing wear or failure from inadequate lubrication or contamination
  • Variable-geometry nozzle ring malfunction or sticking
  • Oil leakage from turbocharger seals or gaskets
  • Compressor surge or stall from incorrect turbocharger matching or operation

Inspection checklist

  • Visual inspection of compressor and turbine blades for damage or fouling
  • Check turbocharger bearings for wear or play
  • Verify proper lubrication and cooling system operation
  • Inspect variable-geometry nozzle ring for proper movement and alignment
  • Check turbocharger mounts and foundations for secure attachment
  • Verify correct turbocharger operation and performance using manufacturer's guidelines
  • Inspect air filters and intake system for cleanliness and proper function
  • Check exhaust system for leaks or blockages

Service intervals

major_overhaul30,000 to 50,000 hours
bearing_inspection10,000 to 20,000 hours
seal_replacement5,000 to 10,000 hours

Typical wear limits

compressor_wheel5% to 10% of original diameter
turbine_blade5% to 10% of original length
bearing_clearance0.1 to 0.2 mm increase over original specification

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

  • Compressor wheel
  • Turbine blade set
  • Bearing set
  • Variable-geometry nozzle ring
  • Seal kit
  • Gasket set
  • Lubrication system filter elements

Safety

  • High-temperature exhaust gases and surfaces
  • Rotating machinery and entanglement hazards
  • Oil leakage and slip hazards

Class survey

The class surveyor will typically check the turbocharger's performance, vibration, and leakage, as well as verify proper maintenance and record-keeping in accordance with the manufacturer's recommendations and classification society rules.

Estimated lifetime: 50,000 to 80,000 hours

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