Certified Testing Equipment from Hofmann

Every balancing machine is a measuring system and must be inspected regularly. With our certification service, we ensure that your calibration rotors, master rotors and test weights are within required specification and tolerance. This means that you can always rely on the precision of your balancing machine.

Certified testing equipment – the technical control for your calibration and master rotors

To ensure that balancing machines and devices operate in a reliable and traceable manner in the long term, we offer you a continuous annual re-certification of your testing equipment. That consists of calibration or master rotors with the associated testing and calibration weights.

Re-certification of master parts. Are you wondering if your calibration rotor or master rotors are still suitable for inspecting your machine? To ensure that you are prepared for the next audits, Hofmann will take over the regular re-certification of existing and new parts used for the testing of balancing machines.

Production of certified master parts. Hofmann offers master parts according to individual customer requirements in the following designs:

  • Standard calibration rotors as per DIN ISO 21940 – 21 and SAE ARP 4162
  • Master rotors from modified original parts
  • Master rotors similar to original parts
  • Test weights, incl. special designs such as bob weights for crankshafts

As part of the certification / re-certification, Hofmann provides:

  • Geometric measurement of the rotor
  • Checking of the residual unbalance and re-balancing if required
  • Checking of the calibration weights

Reminder service. You don’t have to worry at all about your re-certification. Hofmann offers comprehensive re-certification management including a personalized reminder service.

Direct contact to the Hofmann certification service:
Tel.: +49.6157.949.308
Fax: +49.6157.949.100

Weighing & 3D Part Measurement in the Grade 2 Measuring Room in Pfungstadt (according to VDE 2627)

Do you have questions regarding the shape and position tolerances of your products? We offer reliable and precise measurement with fast turn around service. This includes the measuring and weighing of production parts and master parts, a comprehensive document management including report creation according to customer request and the traceability of measurement results. To ensure this quality, we rely on high-precision measuring technology:

DAkks 3D coordinate measuring machine of the type Wenzel LH 87

  • Measuring range: X = 800 mm, Y = 1000 mm, Z = 700 mm
  • Accuracy: (1.6 + L/350 mm) µm L = measured length in mm
  • Probe: Mitutoyo Renishaw PH10M Plus
  • Scanning measurement possible
  • Software: Quartis R15

DAkks-calibrated scale Sartorius Secura 224

  • Mass up to 220 g
  • Accuracy: 0.1 mg

DAkks-calibrated scale Satorius SIWAEDG 3

  • Mass up to 32 kg
  • Accuracy: 0.5 g