Saccardo Spindle Repair & Rebuild

Saccardo Spindle Repair Services

Your Saccardo spindle is in expert hands with the factory-trained, Big Plus–certified technicians at High Speed Technologies, Inc. We have repaired dozens of Saccardo spindles to original factory performance. Need it fast? We can repair your spindle within three days of customer approval, and we offer reduced pricing for longer lead times. All spindle repairs are backed by a complete warranty and our 30-year reputation of OEM-quality spindle repair.

Here are some common Saccardo spindle performance issues that we resolve:

  • Noisy or contaminated bearings
  • Increased vibration
  • Chatter marks
  • Blunt force trauma
  • Burned stator
  • Fatigued springs
  • Poor part finish
  • Failed seal

At HST, we replace all bearings with top name-brand ABEC 7 super-precision spindle bearings. Your spindle repair will include replacing or restoring all worn drawbar springs, seals and critical surfaces. Then we perform high-speed balancing to eliminate vibration, extend life and improve part quality. HST has provided the CNC machining community with a high-quality alternative to higher-priced OEM spindle repairs since 1986.

Saccardo VA25 spindle repair

A completely repaired Saccardo VA25 spindle ready to be crated and shipped to the customer.
See some featured repairs below.

Saccardo Elettromeccanica Srl can trace their roots back to 1958 when they started manufacturing electric motors. By the end of the 1990s they started manufacturing their first spindle motors. But it wasn’t until 2001 that they really started specializing in spindles for CNC stone cutting. Today Saccardo manufactures a broad line of high quality and very robust spindles. They find many applications in glass processing and stone cutting as well as other processes.

Below are other examples of HST’s OEM-quality repairs on Saccardo spindles.

For expert Saccardo spindle repair, call us at 1-603-483-0333 for a quote. We are fast, experienced, and our work is guaranteed.

Featured Repair

Job I-1213

This Saccardo VA 25 spindle was off of a Prussian CNC stone cutting machine. It came in completely seized.  This was a result of a catastrophic failure of the #2 bearing.  Stone cutting spindles lead a rough life.

Saccardo spindle destroyed bearings

# 2 Bearing is totally destroyed. The Cage is split.

But that’s not all we found. We were unable to eject the tool.  The drawbar was not traveling far enough when actuated.  We soon found why. The drawbar nut was worn down about 6mm from contacting the actuator while rotating. And the Actuator face was also worn.

Now we had to discover the root cause of the failure. We had two possible suspects. The first was a potential machine problem that we have run into before with HSD spindles. In the case of the HSD spindle the machine would issue a tool release command while the spindle was still turning driving the actuator into the drawbar.

Fortunately this time it turned out to be a little more mundane. The gripper assembly had unscrewed. This allowed the drawbar to spring back into the actuator even when the actuator was retracted.

Worn Drawbar Nut Saccardo spindle

Saccardo spindle drawbar nut on the shaft

Here is a before and after of the Saccardo drawbar nut on the shaft.

The unclamp actuator that contacts the drawbar nut was also worn down and damaged. This part was also “hard-welded” up and the precision ground to required dimensions.

Saccardo spindle drawbar unclamp actuator

Saccardo drawbar unclamp actuator before and after repair.

Before a spindle is repaired all of the parts are cleaned, inspected and laid out.

Parts for a Saccardo spindle repair

The spindle is carefully assembled. Once the spindle is fully assembled our stringent test procedures begin. The spindle is checked for run-out on the taper and on a certified test bar at 300 mm. The spindle is instrumented and run-in. Vibration, balance and temperature are all monitored during run-in.

After run-in the spindle is “trim-balanced” at high speed to ensure that it performs like the day it came out of the factory or sometimes even better.

A Saccardo spindle instrumented for vibration and balance testing.

A Saccardo spindle instrumented for vibration and balance testing.

When we finished, the spindle ran great and is back cutting stone for a happy customer.

Saccardo spindle repair after picture

“Hi Claude/Briah,

 After working with Prussiani on fixing the hydraulic problem that destroyed our spindle, we are up and running and the spindle seems to be working well.  Thanks for your help!”

Name withheld by request.
Job # I-1213

Job I-0643

 When we received this VS14 spindle for repair we were amazed that it still turned by hand. It was rough. Usually stone cutting spindles are seized up by time we get them. These Saccardo VS14 series spindles are rugged units.

Saccardo VS 14 spindle recieved dirty

This Saccardo VS 14 series spindle was in better shape than most when we received it. That having been said there is visible damage to the taper assembly. It had excessive run-out and very low pull force.

All of our Saccardo spindle repairs start with a forensic analysis. We carefully examine each component to determine the cause of failure. After that we provide a full report to our customers so they know exactly what went wrong and what they are paying for.

The reason for the low pull force was immediately evident as soon as we removed the drawbar. Many of the Belleville springs had failed from fatigue. At HST it’s standard procedure to replace all springs on every rebuild.


Belleville springs with fatigue failure

Like most stone cutting spindles we receive for repair, this one needed our GPG process. The taper was in pretty bad shape.  It was restored to like new condition.


Saccardo VS14 Spindle taper before and after repair

When the spindle repair was complete the run-out on the taper was less than 1 and only 12 µm at the end of a 300 mm test bar.  The pull force was completely restored and the spindle ran like new.

Saccardo VS14 Spindle Repaired

This Saccardo VS14 spindle ran like new after an HST repair

HST has been repairing spindles worldwide since 1986.
We can repair your Saccardo spindle to original factory condition.
Give us a call 1-603-483-0333 or use the form to obtain an estimate.