Steering pinions

Steering pinions

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Machines and manufacturing systems for the machining of steering pinions

These days, power steering systems are standard in all cars. It is the reason why the steering pinion that transfers the movement of the steering wheel to the steering system’s gear shaft is produced in enormous quantities. For the KOEPFER 160 Hobbing Machine this is a simple task, as it is specially designed for the manufacture of steering pinions. The machine features a cutting-edge 8-axis control and offers high speeds on both hobbing head and mainspindle. It allows for the milling of even the smallest number of teeth on shafts and steering pinions at high cutting speeds.

Machining of steering pinions on K 160 machines.

An integrated loading gantry ensures the automatic loading and unloading of all workpiece variants. A workpiece positioning check and – where necessary – adjustment is carried out early on, when the component is still in the loading magazine. This is necessary, as the gearing on the steering pinion must be machined in alignment with a contour (surface, fluted section).

Machining technologiessoft pre-milling and hard finishing (skiving) of the gearing
Machining quality 
  • pre-milling of the steering pinion (soft) to DIN 7-8

  • depending on workpiece type and number of teeth – approx. 40-50s (including alignment)

Workpiece variants2 x 10 steering pinion variants, with left- and right-hand pitched gearing respectively
Cycle times 
  • pre-milling (soft): depending on type and number of teeth – approx. 30 – 40s (including alignment)

  • skiving (hard): depending on type and number of teeth – approx. 40 – 50s (including alignment)


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