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The shaft rescue system

The clever route with total write-offs

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Shaft rescue system

Clever rather than expensive

In our Spindeldoctor practice, we come across many kinds of defective spindles. From experience, we know that in nearly all cases the problem is the cone.

But why do customers let themselves be sold a completely new shaft when only a small part is defective? Why do customers wait up to six months when it is also possible in seven days? Why do customers pay a high price when they could also save money?

The causes


With our shaft rescue system, we start at the weak point of your spindle. Permanent operation, constant changing of the tools, collisions between tool interface and workpiece or the tool turning in the interface have a detrimental effect on the cone.

Negative consequences

Huge costs are incurred in replacing the entire spindle. Are you well insured? Then the insurance premium at least will increase and the Controlling department at your company will not be best pleased either.

The treatment

We perform “open-heart surgery” and put the cone of a spindle back into operation. Your spindle will be restored to health in just seven days and will be as “good as new”. The great thing about it: You save 60 percent of the costs!

Shaft rescue system

Cone repair = spindle repair

Repairs already attempted through chrome coating


Put simply, the cone connects your spindle to the respective tool. No other part of a spindle is subject to such intense use; no other part breaks so quickly.

Steer clear of chrome coating

“Quack doctors” try it with chrome coating. Not a good idea! The geometry of the interface is changed as a result of the rough grinding. In addition, the clamping taper and the inner contour of the shaft are usually ignored. Ultimately, the nitrated lower layers have to be removed during chrome or welding repair.

What chrome coating causes

As the Spindeldoctor, we warn against chrome or welding repair. This can lead to functional defects in the Tensioning system, clamp and sensory system. In addition, material flaking as a result of a frequent change in tools is to be expected.

Shaft rescue system

Five steps to a healthy spindle

When you bring your spindle to our practice as part of the shaft rescue system, we take a look at the cone. In the first step, the component is fully turned and is given special treatment immediately.

Full turning is followed by insertion of the cone bushing using nitrogen, and alignment. We repair the spindle shaft through internal grinding. We measure the shaft cone during the entire grinding process. After assembly, the cone is measured once again in the prism with a pin gauge. The result is impressive: the cone complies with the DIN 69781 standard again in its entirety.

Shaft rescue system

Benefits at a glance

  • Focus on the decisive component
  • Spindle repair in just seven days
  • Cost savings of 60 percent
  • No problems with insurance
  • Spindle works better than before