Uptower See all →
Private: Brake Disc Repair Damaged brake disc sections milled out and replaced uptower. Private: Generator Shaft Repair Worn generator shafts machined back to tolerance in place. No generator replacement. Private: Yaw Gear Mounting Flange Repair Worn yaw drive mounting flanges and damaged threads repaired uptower. Private: Yaw Sliding Surface Refurbishment On-site refurbishment of worn yaw sliding surfaces. No yaw ring exchange, no crane. Yaw Ring Teeth Repair Patented in-nacelle machining. The ring is repaired where it stands - no removal, no crane. Rotor Lock Repair Full rotor lock seat restoration in-nacelle. No component removal required. Bolt Removal & Thread Repair Failed or seized bolts removed and threads recovered without replacing the host component.
Blade See all →
Private: Blade Surface Milling 3D milling of damaged blade areas to an exact surface - uptower or on ground. Blade Root Repair Restore damaged blade root inserts onsite, reducing downtime from months to days Private: Blade Root Bushing Replacement Worn or fatigued blade root bushings replaced in-situ without scrapping the blade.
Support Structures & Flanges See all →
Monopiles & TPs Sub-millimetre flatness on monopiles and transition pieces. Precision machining performed before installation. Tower Flanges Tower section flange flatness restored on-site. No re-fabrication, no transport. Sea Fastening Machining sea fastenings and towers stands to the required tolerances without transporting the structures to a workshop.
General Industry See all →
Line Boring Portable line boring for large bores in-situ. Heavy industry, marine, energy. Axle & Shaft Repair Worn or damaged axle and shaft journals restored on-site. No removal, no replacement. Industrial Flange Machining Sub-millimetre flatness restored on site for industrial flanges on large production machinery. 3D Laser Measurement 3D laser tracker and Easy Laser services. Alignment verification, quality control, dimensional inspection on-site. High precision measurement.
Measurements See all →
3D Laser Measurement 3D laser tracker and Easy Laser services. Alignment verification, quality control, dimensional inspection on-site. High precision measurement.
Custom Solutions Can't find your repair? We design bespoke solutions for unique turbine geometries.
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Industrial Flange Machining
General Industry Solutions

Precision Machining
For Industrial Flanges

Sub-millimetre flatness restored on site for industrial flanges on large production machinery.

Request a quote How it works

Trusted by wind operators and OEMs across Europe and North America

  • Vestas
  • Siemens Energy
  • NextEra Energy
  • GE Vernova
  • Enercon
  • Nordex
  • EDF Renewables
  • Welcon
  • RWE
  • CS Wind
  • EEW
  • Muehlhan
  • Nicon Industries
  • Orsted
  • Cadeler
  • Vattenfall
  • Smulders
  • Windar
  • Titan Wind
  • SubC Partner
  • Semco Maritime
  • LM Wind Power
  • Iberdrola
How It Works

Restore Flange Flatness.
Wherever It Lives.

Flange connections are found across critical industrial assets, from turbines and pumps to offshore equipment and large production machinery. CNC Onsite performs precision flange machining directly onsite, restoring critical interfaces without transporting equipment to a workshop.

Technical Specifications
Typical duration 1–7 days on site
Diameter range Up to Ø10,000 mm
Flatness tolerance OEM specification
Certification ISO 9001
Equipment Mobile CNC flange milling system
Applications Wind, marine & heavy industry
Expected lifetime Similar to original
ISO 9001LARGE DIAMETERSCNC CONTROLLEDHIGH PRECISION
Reduced Downtime Machining directly on the asset eliminates transportation to workshops and reduces the time required to restore critical equipment to operation.
Cost Efficiency Large industrial assets are repaired where they are installed, eliminating costly transportation and workshop handling.
Precision & Quality Controlled CNC machining restores flange surfaces to the required tolerances, ensuring reliability, alignment, and performance.
Repair Instead Of Replace On site repair restores critical interfaces and extends asset life, eliminating the need for costly component replacement and minimize waste.
Contact our team

Let Us Find
The Right Solution

Whether it's a repair, machining project, or custom machine solution, our engineers are ready to help you find the most efficient way forward.

+45 70 11 02 70 info@cnconsite.dk

Damage photos help - email them directly or attach them when we reply.

Global reach

Wherever your turbines stand

On site within days Worldwide call-out, 24/7. Technicians mobilize within days of a purchase order.
Onshore & offshore The same in-nacelle method works at sea - no offshore crane deployment needed.
Three continents A proven repair track record on wind turbines across three continents.
Related Solutions

More general industry services

Line Boring
General Industry

Line Boring

Portable line boring for large bores in-situ. Heavy industry, marine, energy.

Learn more →
Axle & Shaft Repair
General Industry

Axle & Shaft Repair

Worn or damaged axle and shaft journals restored on-site. No removal, no replacement.

Learn more →
Technician operating a 3D laser tracker measuring a large industrial flange offshore
General Industry

3D Laser Measurement

3D laser tracker and Easy Laser services. Alignment verification, quality control, dimensional inspection on-site. High precision measurement.

Learn more →