SPS Spindle
Onsite Taper
Grinding

Call 866-868-6761 or email us

Spindle Taper Grinding Done Onsite at Your Facility

SPS Spindle provides an onsite service to restore the precision tool holding taper on your machine tool spindle.  Utilizing our custom designed CNC Spindle Taper Grinding system, an SPS technician can grind the taper to your required specification without removing the spindle from the machine.  Our onsite taper grinding specialist will be at your facility as quickly as possible.  We have all of the necessary skills, taper gauging, and tools to grind advanced CNC spindles and high-speed precision spindles.

Contact SPS

Our Process:

  • Complete Spindle Assessment Prior to Taper Grinding
  • Vibration Analysis
  • Drawbar Retention Force
  • Detailed Taper Inspection
  • Runout
  • Taper Contact
  • Test Bar Measurements
  • Tooling Inspection
  • Grinder Setup
  • Grinding in Place of the ID Taper
  • Grinding in Place of the Spindle Face (BIG Plus® & HSK only)
  • Constant Monitoring and Measurements Taken Throughout Grinding Process
  • Complete Quality Control Inspection After Grind
  • Drawbar Retention Force
  • Detailed Taper Inspection
  • Runout
  • Taper Contact
  • Test Bar Measurements


Our comprehensive spindle taper grinding services are handled by Phil Marmo, who travels across the U.S. servicing customers. To learn where Phil is going to be next and how quickly he can be at your facility to handle your taper grinding needs, call 866-868-6761 to schedule an appointment. WATCH PHIL’S VIDEO

CAT, BT, BIG PLUS®, HSK, AND MORE!

Our onsite service is available on all horizontal and vertical machining centers. Our comprehensive CNC Spindle Taper Grinding services are backed by over 25 years in the high speed spindle rebuilding industry. We always strive to keep your machine’s downtime to an absolute minimum.

The spindle taper grinding service is performed using the rotation of the spindle shaft within its own bearings. Therefore, it is critical that the condition of the spindle bearings and the complete rotating assembly be good in order to achieve the best results. To provide our customers with the most efficient service job, each SPS Onsite Taper Grind customer will be provided with a pre-grind checklist of instructions prior to our arrival.