Already using a belt-driven turning spindle but facing performance issues, excessive vibration, or reduced accuracy?
At Capital Spindles, we specialize in end-to-end repair, reconditioning, and performance restoration for all types of belt-driven spindles. Our goal is to bring your spindle back to — or even beyond — its original factory specifications.

Our comprehensive services include:

• Taper or Chuck Nose Rework – Restoring damaged or worn tapers to ensure accurate tool holding and superior surface finish.
• Shaft Grinding & Dynamic Balancing – Correcting runout, eliminating vibrations, and ensuring smooth, precise operation at high speeds.
• Bearing Replacement & Preload Setup – Installing premium-quality bearings with correct preload for maximum life and accuracy.
• Housing Repair & Liner Rework – Repairing damaged housings, replacing liners, and ensuring perfect fitment for internal components.
• Pulley Re-Machining & Alignment – Correcting pulley wear, restoring alignment, and optimizing belt drive efficiency.
• Final Inspection, Testing & Warranty – Every spindle undergoes precision testing for runout, vibration, and thermal stability before delivery, backed by our quality warranty.

In addition to repairs, we help modernize and upgrade old lathe machines by integrating our precision-engineered belt-driven spindle assemblies. This not only extends the machine’s service life but also boosts cutting accuracy, speed capability, and productivity without the cost of a complete machine replacement.

With decades of expertise, state-of-the-art equipment, and a skilled engineering team, we ensure your spindle operates at peak performance for years to come.