On-site taper grinding & spindle restoration
Restore spindle accuracy and toolholding performance without removing the spindle. Our on-site taper grinding reduces runout, improves efficiency, and extends the life of your machinery.
CAT · BT · HSK · BIG-PLUS · Pre- & post-grind inspection
The cause and effects of bad tapers
Over time, tool changes, crashes, and wear degrade the precision geometry of a spindle taper. The result is poor toolholding, increased runout, chatter, and declining surface finish — problems that compound across every part you cut.
On-site taper grinding corrects the taper in place, restoring the contact geometry to specification. That means tighter runout, better finish, longer tool life, and less scrap — without the downtime of pulling and shipping the spindle.
Reduce Runout
Restore concentricity and repeatable toolholding to specification.
Improve Efficiency
Better surface finish and tool life mean less rework and scrap.
Extend Machine Life
Regular taper maintenance protects your spindle investment.
Taper grinding questions, answered
- What is taper grinding and why does it matter?
- Taper grinding restores the precision geometry of a machine tool spindle taper. A worn or damaged taper causes poor toolholding, increased runout, chatter, and reduced surface finish. Regrinding the taper back to spec restores accuracy and tool life.
- Which taper types do you grind?
- Centerline grinds CAT, BT, HSK, and BIG-PLUS tapers, among others. On-site service means the taper is ground in place on your machine, avoiding removal and shipping.
- Do you inspect before and after grinding?
- Yes. Every job includes full pre-grind inspection to assess the taper condition and post-grind verification to confirm the restored geometry meets specification.
- What are the signs of a bad taper?
- Common symptoms include tool marking or fretting, poor surface finish, increased runout, chatter, tool pull-out, and inconsistent toolholding. These often indicate the spindle taper needs regrinding.
Request an on-site taper grinding estimate
Talk to our spindle specialists about repair, taper grinding, or a custom build. Fast turnaround, guaranteed performance.