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MAN ES Turbocharging

NR-S NR29/S

Turbocharger · Turbochargers

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

MAN ES Turbocharging NR-S NR29/S — NR-S, 6000 kW max.

Specifications

Technical data.reference — unverified

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Frame SizeNR29/S
Power max (kW)6000
Inspection

Inspector Detail ✓ verified

Common issues

  • Worn or damaged turbine blades
  • Clogged or fouled compressor wheels
  • Bearing wear or damage due to inadequate lubrication
  • Seal failure leading to oil leakage
  • Inadequate or improper balancing of the turbocharger
  • Foreign object damage to the turbine or compressor
  • Inlet or outlet obstruction restricting airflow

Inspection checklist

  • Visual inspection of turbine and compressor blades for damage or wear
  • Check bearing condition and lubrication
  • Verify proper seal installation and condition
  • Inspect inlet and outlet ducting for obstruction or damage
  • Check compressor and turbine wheel balance
  • Verify proper oil supply and filtration
  • Check for signs of overheating or excessive vibration
  • Inspect mounting and alignment of the turbocharger
  • Verify proper function of the turbocharger control system

Service intervals

major_overhaul30,000 to 50,000 hours
bearing_replacement10,000 to 20,000 hours
seal_replacement5,000 to 10,000 hours
filter_replacement1,000 to 5,000 hours

Typical wear limits

turbine_blades10% to 20% of original blade length
compressor_wheels5% to 10% of original wheel diameter
bearings0.1 to 0.5 mm of radial clearance

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

Critical spares

  • Turbine blades
  • Compressor wheels
  • Bearings
  • Seals
  • Oil filters
  • Gaskets and O-rings
  • Balancing weights

Safety

  • High-speed rotating components
  • Hot surfaces and oil leakage
  • Electrical shock from control systems
  • Compressed air or gas leakage

Class survey

The class surveyor will typically check the turbocharger's condition, including the turbine and compressor blades, bearings, and seals, as well as verify proper installation, alignment, and function of the turbocharger and its control system.

Estimated lifetime: 40,000 to 60,000 hours

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