HENNINGER GmbH u. Co. KG: We create Precision
August 6, 2026 / 7:51 AM
We create precision, sustainability & custom solutions. Thus, we have made a mark with innovative product developments in the international engineering industry since 1956. In brief HENNINGER stands for a reliable and 100% made-in-Germany quality with a long tradition. Our products include Centre Grinding Machines, Angle Heads, Spindle Speeders, Spindles & Centres.
We are proud of our great team of 30 dedicated & highly skilled employees. Hence we have been keeping the promise to our customers of being a pioneer in terms of quality, flexibility & service. We have once again demonstrated our technological leadership by developing a clamping system for our Centre Grinding Machines that can clamp even the thinnest-walled workpieces.
What is centre grinding?
What is centre grinding, or centre hole grinding? Centre grinding means restoring a deformed centre hole after the workpiece has been hardened. Hereby the centring hole is ground round up to one µm. Centre grinding enables high-precision processing in order to implement a higher quality standard in the entire workpiece production. Furthermore,
and very importantly, centre grinding forms the axis.
Why centre grinding?
The centre grinding process is necessary after hardening the workpieces in order to achieve the required accuracies of the workpiece with a cylindrical grinding machine. Moreover, an exact centre is required if the subsequent machining operations have to be carried out on other machines. These include e.g. gear, cylindrical and thread grinding machines. Hence the high-precision centres created with the centre grinding machine are the starting position for further machining steps.
Highest precision in runout and roundness is thus guaranteed by the process of centre grinding.
0,001 MM ROUNDNESS Centring holes are non-circular after the hardening process. After centre grinding, however, the centring holes are accurate up to 1µm, or even more. | BRINGING INTO POSITION Fetching the centring hole to a bearing seat or gear teeth. | HIGHER EFFICIENCY Higher precision increases economic efficiency due to less waste. |
Centre grinding is mostly applied after hardening the workpiece. Yet it can also be used for unhardened workpieces. This puts it ahead of the machining process for workpieces that need to be machined between centres.
The aim of centre grinding is to optimise the subsequent processes:
- Cylindrical grinding
- Hard turning
- Measuring
- and many more
The use of a HENNINGER centre grinding machine perfections straightness, coaxiality and roundness in the centre of the workpiece. Hence a minimization of the required grinding allowance and a minimization of the hardening depth are then given.
A precise centre is the starting point for all final machining operations.
| Process without centre grinding | Process with centre grinding |
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| Saving: 45 µm |
Typical customer and product ranges for the centre grinding technology are
- ENGINE MANUFACTURING e.g. crankshafts
- SPINDLES
- MILLING CUTTERS
- GEAR MANUFACTURING e.g. automotive, wind energy
- BROACHES
- ROLLERS e.g. printing industry, spinning machines
HENNINGER Centre Grinding Machines: perfect for any situation / from standard to fully automated
For vertical workpieces
- ZS ONE
For workpieces up to 5 kg / 250 mm / 10 mm centre Ø
- ZS 100 SERIES
For workpieces up to 100 kg / 1160 mm / 58 mm centre Ø
- ZS 200 SERIES
For workpieces up to 500 kg / 2115 mm / 125 mm centre Ø
- ZS 1000 SERIES
For workpieces up to 1000 kg / 3086 mm / 188 mm centre Ø
For horizontal workpieces
- ZS 2000 SERIES
For workpieces of individual size or weight / 188 mm centre Ø
- ZS 250 SERIES
Length & weight of the workpieces depend on the substructure / max. 148 mm centre Ø
We look forward to seeing you at the MSV 2026 in Brno, Hall P / Booth 001.
Website and social media:
https://www.henningerkg.de
https://www.linkedin.com/company/henninger-germany
https://www.youtube.com/@henningerkg
