Manufactured from a single piece of forging, our Pelton runners are characterised by high material toughness and finest grain structure. The high operation durability of runners allows our customers to lower turbine repair frequency while maintaining desired efficiency.
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Runners according to your design

Forged monoblock Pelton runners from CNC TVAR

These turbines are generally used for sites with heads greater than 300 meters. Due to the high net heads, the runner is subjected to extremely high stresses. This is why CNC TVAR manufactures all runners from a single forged block consisting of premium alloys no matter the number of buckets, size or design of the rotor. We understand the need for the highest possible efficiency and make sure, it is not just on the paper. Thus, CNC TVAR provides a long-lasting, high-quality product.



runners delivered



maximum disc weight



maximum runner diameter

Material procurement

Purchasing of stainless steel, titanium and aluminium from top European suppliers. Delivery time depending on specifications and size.

  • Forged disc - any size
  • Forged disc - 8-14 weeks from order
  • Forged disc cut from a bar - up to 1350 mm
  • Forged disc cut from a bar - 1 week from order
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Manual polishing

Grinding and polishing – thatʼs where the parts get their final touch. When it comes to the surface quality of complex shapes, we do not make any compromises.

  • Polishing based on CMM measurement report
  • Experienced employees polishing according to customer specific procedures
  • Several dimensional and quality controls through process
  • Compliance with all environmental standards thanks to the newest filtering technologies

Non-destructive testing

Completed products are checked using four non-destructive testing methods (NDT). Our inspectors are ISO 9712level II certified.

  • Visual Testing (VT)
  • Liquid Penetrant Testing (PT)
  • Magnetic Particle Testing (MT)
  • Ultrasonic Testing (UT)
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The actual unbalance is displayed in one or two planes by graphical and numerical output. There is also a deviation from the allowed unbalance displayed and a suggestion for the most convenient weight correction.

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3D measurement

The measurement is performed on CMM or with a 7-axis high speed 3D arm with a laser scanner with extreme precision according to the highest international standards.

  • Measurement of drawing dimensions
  • Measurement of hydraulic profile
  • Part alignmenet based on RPS points
  • High data quality
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