Rebuilds
Spindle and servo motor rebuilds in Wisconsin
Repair or rebuild, our Wisco teams have you covered. When a spindle, servo motor or other critical part is worn out, patching it books the next breakdown. We rebuild it, put it back in with the alignment checked, and tell you why it failed.
Quick answerLocalSpindle of Wisconsin rebuilds CNC spindles and servo motors and reconditions turrets, tool changers and hydraulic components. We diagnose on the machine first, quote repair, rebuild and replacement side by side, then remove, rebuild, reinstall and test, with a written report on what failed and why.
How rebuilds work
Repair first when repair is right
Not every noisy spindle needs a rebuild, and not every servo alarm means a bad motor. Our techs diagnose on the machine before anything comes off: runout and drawbar force on spindles, insulation, windings and encoder signals on servo motors, pressures and leakage on hydraulics. When the fix is a sensor, a cable, a drawbar spring pack or a valve, we do that and leave the rest alone.
When a rebuild makes sense
Bearings that are worn, seals that let coolant in, encoders that are contaminated, and parts that have taken a crash all point to a rebuild. A rebuild usually costs less than a new unit and comes back to the same specification. You get the rebuild price next to the price of a new or exchange unit, along with turnaround times, and you choose.
If we open something up and find more damage than expected, a cracked housing or a damaged shaft, you hear about it before more money is spent.
What you get back
A rebuilt spindle comes back with new precision bearings and seals, a serviced drawbar, balance work and a run-in. A rebuilt servo motor comes back with new bearings and seals, tested windings and a serviced or replaced encoder, aligned so it’s ready to run. We reinstall it, check runout, temperature or axis performance on your machine, and write down the numbers.
The report also says why it failed: a crash, coolant ingress, contaminated air, lubrication, or simple hours. That’s the part that keeps the next one from failing early.
Repair or rebuild
How we decide
The same questions every time, answered with measurements, not guesses.
| Part | Repair on the machine when | Rebuild when | Replace when |
|---|---|---|---|
| Spindle | Drawbar, taper, sensor, belt or lube problem | Bearings noisy, hot or out of runout spec | Shaft or housing damaged, or a new spindle costs about the same |
| Servo motor | Cable, connector, battery or drive issue | Bearings worn, seals leaking, encoder contaminated | Windings shorted or the motor is obsolete with a better option |
| Turret or tool changer | Sensors, alignment, air or hydraulic pressure | Couplings, cams and index parts worn | Major castings cracked |
| Hydraulic unit | Leaks, filters, valves, settings | Pump worn, cylinder scored | System obsolete or too small for the job |
Start to finish
How a rebuild works
From the first call to the part back in your machine.
Diagnose
On the machine, with measurements.
Quote
Repair, rebuild and replace side by side, with turnaround.
Remove
Carefully, with alignment recorded.
Rebuild
New bearings, seals and wear parts, tested.
Reinstall
Aligned, run in, measured and written up.
Related
Rebuild and repair services
Spindle repair & rebuild
Noise, heat, runout and drawbar problems found on site, and spindles rebuilt when the bearings are done.
Servo motor repair & rebuild
Overload and encoder alarms traced to the cause, drives repaired, servo motors rebuilt with new bearings and seals.
CNC mill & machining center repair
Verticals, horizontals and 5-axis machines: axis alarms, tool changers, lube, ballscrews and crash checks.
CNC lathe & turning center repair
Turning centers and Swiss-types: turret index, chuck pressure, bar feeders, sub-spindles and live tools.
Hydraulic & pneumatic repair
Pumps, valves, cylinders and air systems: leaks, pressure loss, heat and slow motion.
Grinder repair
Surface, cylindrical and tool grinders: wheelheads, hydraulics, ways, chatter and finish.
Yes. We remove, rebuild and reinstall spindles from machining centers, lathes, grinders and routers, and check them on the machine afterward.
Yes, with new bearings and seals, winding tests and encoder service or replacement.
Usually. You’ll see both prices before deciding.
It depends on the part and parts availability. You get the turnaround with the quote.
Yes. Every rebuild comes with a written note on the cause.
Call us about it. We’ll look at the machine and tell you honestly whether rebuilding major parts, a retrofit or a replacement makes the most sense.
Rebuild services
Spindle and servo motor rebuilds
Machine down?
Rebuild or repair? Ask a tech
Call and talk to a tech about the machine, the control and the symptom. The Wisconsin team closest to you takes it from there.
