Tested and approved

For us, top-quality products are not an empty promise, but are definite and reproducible.

We produce from quality class 4 upwards according to DIN 3961/63 and use the following test methods:

Measurement of tooth geometry
Tooth geometry is measured on a CNC gear measuring machine from Höfler. This machine enables us to measure both internal and external toothing to a max. external diameter of Ø 2,600 mm. Larger parts can be measured directly on the tooth flank grinding machines.

Measurement of form and positional tolerances
Form and positional tolerances as well as the cylinders and drill holes of the workpieces are measured by means of a measuring arm, which ensures very high reliability and measurement accuracy.

Ultrasonic, surface, crack and grind burn inspection
The ultrasonic inspection is performed in-house by qualified inspectors using a USLT 2000 flaw detector. Our inspectors are qualified to ASTM test level 2.
The surface hardness test is carried out with the aid of a Wolpert Dyna Tester and a Krautkrämer MIC 10 hardness tester.
While the workpieces are undergoing a crack inspection in the form of a magnetic particle inspection, the grind burn inspection is carried out using a Rollscan 200 Barkhausen tester.

Analysis of mechanical properties
For the analysis of mechanical properties (tensile strength, yield strength, elongation, notch impact energy), we work with an independent test laboratory.