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MAN ES Turbocharging

NR-V NR15/V

Turbocharger · Turbochargers

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

MAN ES Turbocharging NR-V NR15/V — NR-V, 6500 kW max.

Specifications

Technical data.reference — unverified

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Frame SizeNR15/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 damage from improper lubrication or overheating
  • Variable-geometry nozzle ring malfunction or sticking
  • Oil leakage from turbocharger seals or gaskets
  • Inadequate cooling of turbocharger components
  • Imbalance or vibration of rotating parts

Inspection checklist

  • Compressor and turbine blade condition
  • Bearing temperature and vibration checks
  • Lubrication system function and oil quality
  • Cooling system performance and leaks
  • Variable-geometry nozzle ring operation and adjustment
  • Turbocharger mounting and alignment
  • Exhaust gas inlet and outlet conditions
  • Control system function and sensor calibration
  • Oil drain and filter condition

Service intervals

oil_change1000-2000 hours
filter_replacement500-1000 hours
bearing_inspection5000-10000 hours
compressor_blade_cleaning2000-5000 hours
turbine_blade_inspection10000-20000 hours

Typical wear limits

compressor_blades10-20% of original thickness
turbine_blades5-10% of original thickness
bearings0.1-0.5 mm of radial clearance
nozzle_ring1-2 mm of axial clearance

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

Critical spares

  • Compressor and turbine blades
  • Bearing sets
  • Seals and gaskets
  • Nozzle ring and actuator
  • Lubrication system components
  • Cooling system parts
  • Control system sensors and actuators

Safety

  • High-temperature exhaust gases and surfaces
  • Rotating parts and entanglement hazards
  • Oil leakage and slip hazards
  • Electrical shock from control system components
  • Compressed air or gas leaks

Class survey

The class surveyor will typically check the turbocharger's performance, vibration, and temperature levels, as well as inspect the compressor and turbine blades, bearings, and seals for signs of wear or damage. The surveyor will also verify that the turbocharger is properly installed, aligned, and maintained, and that all safety devices and controls are functioning correctly.

Estimated lifetime: 40000-60000 hours

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