Rotor Repairs


MP Rotorshop

Maintenance Partners’ rotorshop in Zwijndrecht (near Antwerp – Belgium) is dedicated to perform the inspection (according to the API 687 standard), high speed balancing (or operating speed rotor balancing), repair, refurbishment and testing of turbomachinery rotors.

We provide services on:

  • Axial compressor rotors
  • Radial compressor rotors
  • Steam turbine rotors
  • Expander rotors


  • Any brand or make
  • Both old and new rotors
  • Competitive pricing
  • Short delivery times
  • Upgrades & Revamps

Rotor Repairs & Inspections

Each rotor repair starts with an inspection, the inspection provides a complete assessment of the rotor condition.

An API 687 inspection includes:

  • Rotor cleaning (glass bead blasting)
  • Visual inpection
  • Mechanical & Electrical Run out
  • Non Destructive Testing
  • Reporting & repair proposal

Read more about API 687 inspections on this page.

Depending on the condition of the rotor, the following may be included in the rotor repair:

  • Rotor journal repairs by welding, laser cladding or HVOF coating
  • Spare parts: manufacturing of new impellers, shafts, blades, diaphragms, blade carriers, etc.
  • Reblading
  • Replacement of seal strips
  • Low speed balancing
  • High speed balancing
  • Over speed test
  • Impeller spin test
  • Coating application on compressor impellers for corrosion protection, reduction of fouling rates and a smooth surface, resulting in an increased efficiency



High Speed Balancing Machine

The Maintenance Partners rotorshop is equipped with a state-of-art Schenck high speed balancing machine in which we balance rotors at speeds up to 30.000 RPM according to API684, API617 or ISO11342 standards.

Specifications DH7S DH4  
Rotor weight 600 – 12.500 kg 60 – 1.250 kg  Website - Rotor Repair - HSB01
Max rotor length 6.000 mm 6.000 mm
Max rotor diameter 1.700 mm 1.700 mm  
      Website - Rotor Repair - HSB02
Max drive speed 12.000 rpm 30.000 rpm


Parts manufacturing

The rotorshop provides all required parts for rotors, with support from our in-house engineering department, including:

  • Steam turbine & axial compressor blades
  • Diaphragms for steam turbines & compressors
  • Complete new reverse engineered rotors
  • Supply of impellers (slot welded or brazed type)

Further Reading



Are you in need of a API687 rotor inspection, a rotor repair or high speed balancing? Call us directly at: +32(0)3541 71 40 or send us a message using the form below:

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