CNC Spindle Repair & Rebuild Services

Restore Precision. Minimize Downtime. Maximize Equipment Life.

When a spindle fails, everything stops. Production halts, deadlines slip, and costs mount by the hour. At Gilman, we understand that downtime isn't just an inconvenience—it's a threat to your bottom line.

Whether you're experiencing vibration, overheating, bearing failure, loss of accuracy, or complete mechanical breakdown, our Wisconsin-based team delivers proven spindle repair solutions that get you back to production quickly with confidence in long-term performance.

CNC Spindle Repair & Rebuild Services

Restore Precision. Minimize Downtime. Maximize Equipment Life.

When a spindle fails, everything stops. Production halts, deadlines slip, and costs mount by the hour. At Gilman, we understand that downtime isn't just an inconvenience—it's a threat to your bottom line.

Whether you're experiencing vibration, overheating, bearing failure, loss of accuracy, or complete mechanical breakdown, our Wisconsin-based team delivers proven spindle repair solutions that get you back to production quickly with confidence in long-term performance.

More Than Parts Replacement—A Complete Solution

A professional spindle rebuild isn't just about swapping bearings. It's about understanding your operation, diagnosing root causes, and engineering solutions that improve performance, while reducing risk for future failures.

Every Gilman spindle repair delivers:

Restored Accuracy & Performance – Return to original specifications or better, with documented verification

Predictable, Reliable Operation – Engineered for your specific application and duty cycle

Extended Asset Life – Maximize your capital equipment investment and delay costly replacements

When repair is treated as an engineering project rather than an emergency patch, you reduce future failures, extend equipment life, and gain operational predictability.

Precision Spindle Repair for CNC Equipment in Mission-Critical Manufacturing Environments

Your facility can't afford repairs that fail. That’s why Gilman spindle rebuild services support industries where precision, reliability, and documentation aren't optional—they're requirements.

Aerospace & Defense

Traceability, documentation, and controlled testing aren't extras—they're necessities. Our repairs support aerospace programs and defense manufacturing where spindles must hold tolerance through demanding duty cycles and varying loads.

Industrial Machinery & Machine Builders

Consistency drives throughput. We restore spindle accuracy in milling, drilling, boring, and specialty machines, helping you avoid production delays while protecting your equipment investment.

Automation & Robotics

In automated systems, one spindle failure stops the entire workflow. Our repairs support high-speed trimming systems, robotic machining cells, and automation modules where reliability is a system mandate.

Automotive & Heavy Equipment

High production and heavy duty manufacturing environments demand spindles that perform consistently under sustained loads. Our rebuilds stabilize thermal performance, restore stiffness, and support multi-shift operation.

Job Shops & Contract Manufacturers

Unplanned downtime directly impacts cash flow. We deliver predictable performance at a fraction of the cost of new equipment, with turnaround times that keep your schedule intact.

Engineering-Driven Repair Process

Anyone can replace bearings. Not everyone can guarantee performance.

At Gilman, every repair is backed by testing, documentation, and decades of spindle manufacturing expertise.

Our Core Capabilities
 

Precision Shaft Restoration
 

Critical surfaces are ground and rebuilt to restore alignment, bearing fit, and concentricity to specification.

Dynamic Balancing
 

Spindles are balanced to ISO, SAE, or DOD standards to eliminate vibration and maximize bearing life.

Bearing Replacement & Optimization

Bearing classes and preload are precisely matched to your duty cycle for improved performance and extended service life.

Spindle Motor Repair & Rewind

Electrical and mechanical systems are repaired together in-house to ensure complete motor performance restoration.

Thermal & Vibration Validation

Every spindle is tested at operating speed before shipment. Issues are corrected in our facility—not on your machine.

Runout Certification & Documentation

Each repair includes comprehensive inspection documentation confirming readiness for production.

Why Repair Often Beats Replacement

Replacement isn't always the fastest or safest path forward.

New spindles require re-commissioning, integration time, and often unexpected complications. A properly executed repair eliminates uncertainty while preserving your existing workflow and setup.

Advantages of Professional Repair:

  • Faster return to production with no integration delays
  • Lower total cost of ownership over equipment lifetime
  • No re-fit, re-validation, or programming changes required
  • Documented, measured performance instead of assumptions
  • Opportunity for performance upgrades during rebuild

When Should a Spindle Be Rebuilt?

Don't wait for complete failure. Early intervention prevents secondary damage to shafts, housings, and motors.

Schedule a rebuild if you notice:

  • Increasing vibration or surface finish defects
  • Audible bearing noise or unusual sounds
  • Temperature exceeding normal operating baseline
  • Tolerance drift or dimensional inconsistency during runs
  • Intermittent performance issues or power loss
  • Electrical faults or thermal alarms

Addressing these symptoms early protects your investment and reduces total repair costs.

Proven Results: Real Repairs, Real Impact

Case Study: High-Speed Bearing Testing Spindles

Challenge: Precision bearing testing spindles were experiencing premature failures, disrupting testing schedules and increasing costs.

Solution: Our engineering team redesigned the spindle housing and mounting bracket, reducing environmental factors contributing to failure while improving overall unit performance.

Result: Significantly extended spindle life and improved production consistency—without replacing the machine.

Case Study: Heavy-Duty Machining Center Spindle

Challenge: Large motorized CNC spindles were failing repeatedly, causing production losses and scrapped parts.

Solution: Complete rebuild including motor rewind, bearing adjustments to increase thrust capacity, and custom spacers manufactured in-house at our Wisconsin facility.

Result: Dramatic performance improvement with increased uptime and scrap costs reduced to zero.

What Makes a Repair Last

The difference between a rebuild that lasts five years and one that fails in six months isn't the parts—it's the process, engineering discipline, and testing.

Our Professional Rebuild Process Includes:

  • Root-cause failure analysis
  • Engineering assessment and design improvement recommendations
  • Performance testing under load conditions
  • Verified performance measurements and documentation
  • Complete engineering records for your quality system

When repair is approached with engineering rigor, failures become predictable and preventable rather than recurring surprises.

The True Cost of Cheap Repairs

Low-cost repairs often cost more in the long run.

Warning signs of inadequate repair work:

  • Premature failure requiring repeated repairs
  • Only bearings replaced without full unit evaluation
  • Elevated operating temperatures
  • Excessive vibration or runout
  • No performance testing or documentation

If you've experienced these issues after a previous repair, it's time for a different approach.

Start Your Repair: Information We Need

Detailed information helps us diagnose accurately, recommend the best solution, and return your spindle quickly.

Please provide:

  • Machine model and spindle type/serial number
  • Failure symptoms and history
  • Target RPM and operating conditions
  • Temperature concerns or measurements
  • Noise or vibration characteristics
  • Production urgency and timeline requirements

Clear data shortens turnaround time and improves repair accuracy.

Start Your Repair: Information We Need

Detailed information helps us diagnose accurately, recommend the best solution, and return your spindle quickly.

Please provide:

  • Machine model and spindle type/serial number
  • Failure symptoms and history
  • Target RPM and operating conditions
  • Temperature concerns or measurements
  • Noise or vibration characteristics
  • Production urgency and timeline requirements

Clear data shortens turnaround time and improves repair accuracy.

Frequently Asked Questions

Do you repair non-OEM spindles?
Yes. We have extensive experience repairing spindles from virtually any manufacturer. While we can't always guarantee the same level of performance documentation as with Gilman spindles, our repairs consistently meet or exceed OEM specifications.

How long does spindle repair typically take?
Lead time depends on damage extent and parts availability. We offer expedited turnaround options for critical production situations. Contact us with your specific timeline requirements.

Do you provide documentation and test reports?
Yes. Every repair includes comprehensive acceptance test results documenting performance to specification.

Can spindles be upgraded during rebuild?
bsolutely. Many spindles can be improved through bearing class upgrades, enhanced sealing, or other design modifications. Our engineering team welcomes collaboration on performance enhancements.

Do you rebuild spindle motors in-house?
Yes. Electrical issues, windings, and thermal failures are evaluated and repaired at our Wisconsin facility with complete motor rewind capabilities.

Ready to Restore Your Spindle Performance?

Don't let spindle failure dictate your production schedule. Our engineering-driven repair process delivers the accuracy, reliability, and documentation you need to maintain competitive operations.

Contact Gilman today for a repair evaluation and discover why precision manufacturers across aerospace, automotive, automation, and industrial sectors trust us with their most critical spindle repairs.

Located in Wisconsin | Serving Manufacturing Operations Nationwide

Ready to Restore Your Spindle Performance?

Don't let spindle failure dictate your production schedule. Our engineering-driven repair process delivers the accuracy, reliability, and documentation you need to maintain competitive operations.

Contact Gilman today for a repair evaluation and discover why precision manufacturers across aerospace, automotive, automation, and industrial sectors trust us with their most critical spindle repairs.

Located in Wisconsin | Serving Manufacturing Operations Nationwide

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