Alt CNC

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07968 818 958
Services / Spindles & Ballscrews

Sub-Micron Accuracy
Starts Here.

The precision of your finished components is only as good as the hardware driving them. We provide specialist inspection, refurbishment, and replacement services for spindles and ballscrews.

Sub-Micron
Accuracy Restored
OEM-Spec
Precision Bearings
On-Site
Diagnostic Services
Global
Parts Sourcing
Spindle Diagnostics

Sub-Micron Spindle
Inspection & Analysis

State-of-the-Art Analysis Before We Touch a Bolt

Quantifying Runout, Drawbar Pull Force & Bearing Wear

A spindle repair is only as reliable as the diagnosis behind it. We use high-precision physical and digital testing equipment to pinpoint the exact failure mechanism before proposing an intervention.

Vibration & Spectrum Analysis: Accelerometers measure harmonic resonance and bearing frequency faults to locate subsurface defects.

Taper Runout & Contact: High-precision dial indicators and bluing tests check spindle taper circularity and tool-holder contact ratios.

Clamping Force Diagnostics: Digital drawbar pull-force meters measure clamping retention force to prevent tool slippage and fretting.

Enquire about inspection →
Precision CNC spindle taper runout inspection
CNC spindle bearing rebuilding
Refurbishment

Clean-Room Rebuilds
& Component Recertification

Uncompromising Standards for Vital Drive Systems

Super-Precision Ceramic Bearings & Taper Grinding

Our spindle rebuild process occurs within controlled environments to prevent contamination. We source and fit ultra-precision class angular contact bearings (P4/ABEC7 or higher) to ensure maximum speed and thermal stability.

Bearing Replacement: Fitting matched sets of high-grade hybrid ceramic or steel bearings with exact spacer configurations.

Taper Grinding & Chroming: Restoring worn or damaged taper surfaces through precision grinding, hard chroming, and micro-honing.

Sealing & Lubrication Overhaul: Rebuilding pneumatic seals, rotary unions, drawbar spring stacks, and high-pressure coolant paths.

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Replacement Sourcing

Global Sourcing for
Rapid Turnaround

Minimising Lead Times for Critical Parts

OEM & Verified Equivalents — Supply, Install & Commission

If a component is beyond economical repair, we leverage our international network to source high-specification replacements quickly, with full installation and commissioning included.

OEM & Equivalent Sourcing

Access to genuine parts from major manufacturers including Unisign, Fanuc, and Siemens. Or engineer-verified high-quality alternatives.

Strategic Stocking

We help clients identify critical spares for their specific fleet to ensure immediate availability during a breakdown, eliminating costly wait times.

Turnkey Installation

We don't just supply the part. Our engineers oversee the full installation, integration, and testing of every new component to ensure it performs to specification.

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CNC parts sourcing and replacement
Global
Network
Rapid Sourcing
Dynamic spindle balancing and laser alignment
Calibration Services
Dynamic
Laser
Interferometry
Balancing & Alignment

The Final Micron:
Balancing & Alignment

Optimising Performance for High-Speed Machining

Eliminating Vibration, Chatter & Thermal Drift

A new spindle is only as good as its installation. We provide the final calibration required to ensure your machine is perfectly balanced and capable of delivering mirror-like surface finishes at speed.

Dynamic Spindle Balancing: On-site balancing to eliminate harmonic vibrations, protecting your bearings and improving surface finish quality at high RPMs.

Laser Axis Alignment: Using state-of-the-art laser interferometers to ensure ballscrews are perfectly aligned with the machine's guideways.

Thermal Compensation: Fine-tuning the CNC control to account for thermal expansion, ensuring accuracy from the first part of the shift to the last.

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More Capabilities

Ready to Optimise
Your Production?

Our engineers are standing by to discuss your next project, routine service, or complex relocation. Let's ensure your assets are performing at their peak.

  • Request a Technical Quote: Get a fixed-price proposal tailored to your machinery.
  • Speak with a Specialist: Discuss your specific tolerances and industry requirements.
  • Emergency? If you are facing a critical machine failure, call 07968 818 958
Precision CNC engineering