Spindle Repair & Rebuild for Providence-Area Manufacturers
Since 1986, HST has rebuilt precision machine-tool spindles to OEM specification — 100,000+ repairs and counting. Ship your mechanical or air-bearing spindle to our shop and get it back in production — fast, warrantied, and done right.
Spindle demand across the Providence–Quonset naval supply chain
Providence's biggest spindle-demand driver is the U.S. Navy's undersea-warfare complex — NUWC Newport and General Dynamics Electric Boat at Quonset Point anchor a tight-tolerance subcontract supply chain for submarine housings, sonar hardware, and torpedo components. The primes keep spindle repair in-house.
That naval supply chain is served by AS9100/ITAR-certified job shops running exotic alloys at punishing duty cycles — yet no national spindle-repair vendor has formally staked the territory, leaving it to local alternatives. Those shops rely on specialists like HST for OEM-spec quality and turnaround. Around Rhode Island, shops that fit this profile include Rhode Island Precision Co., Marzilli Machine Co., Brodeur Machine Co., AMI Machining, and Greystone Inc.
Mechanical and air-bearing spindle repair — for shops near and far
Since 1986, HST has rebuilt precision machine-tool spindles for manufacturers across the country and around the world — mechanical and air-bearing alike, to OEM specification. We're an ISO 9001-certified shop running a class-10,000 clean room built for the air-bearing and super-precision work most repair houses can't touch.
Mechanical spindles run the CNC machining centers, lathes, and mills on most shop floors; their bearings carry heavy cutting loads at high duty cycles until wear, heat, or a crash pulls them out of tolerance. Air-bearing spindles are a different animal — a film of pressurized air, not ball bearings, supports the shaft, delivering the sub-micron accuracy that semiconductor, wafer, and precision-grinding work demand. Most shops can't service them at all.
HST rebuilds both to running accuracy. As a Certified Big Plus repair facility, authorized for CAPTO clamping systems, and the authorized sales and service representative for Renaud spindles, every rebuild is bench-tested, backed by a warranty, and returned on a turnaround measured in days, not weeks.
Serving the Providence area and the surrounding region
HST supports manufacturers across the Providence area and the surrounding region — not only the city center.
Communities we serve in the region include Warwick, Cranston, Pawtucket, and Woonsocket, plus Fall River, New Bedford, and Attleboro, Massachusetts — across Providence, Kent, and Bristol counties in Rhode Island and Bristol County, Massachusetts.
What we repair
Mechanical Spindles →
Teardown, bearing replacement, and rebuild to OEM spec for CNC machining centers and lathes.
Air-Bearing Spindles →
High-precision air-bearing service most shops can't touch — restored to running accuracy.
Failure Analysis
Root-cause vibration, runout, and bearing analysis with a documented repair recommendation.
Bearing Replacement
Matched sets with correct preload to restore rated speed, accuracy, and tool life.
Balancing & Runout
Dynamic balancing to eliminate vibration and improve surface finish.
Rush Repair
Expedited turnaround for production-down situations.
Why manufacturers choose HST
Since 1986 · 100,000+ repairs
Depth no competitor can fake — built on decades of documented spindle work.
OEM-trained technicians
Rebuilt to original manufacturer specification, not "close enough."
Warranty + test data
Every rebuild is bench-tested and backed by a warranty.
Get your Providence-area spindle back in production
Send us the make, model, and symptoms and we'll give you a free estimate and turnaround time.
Providence-area spindle repair: common questions
Do I have to bring my spindle to New Hampshire?
No. Most Providence-area customers ship their spindle to us. We guide inbound logistics and return it rebuilt and tested.
How fast is turnaround?
Standard rebuilds run on a set schedule; rush service is available for production-down situations. We confirm timing with your estimate.
Which spindle brands do you repair?
Every major brand — Mazak, Okuma, Mori Seiki, Fanuc, HSD, Disco, and more — across mechanical and air-bearing types.
Is the rebuild warrantied?
Yes. Every spindle is rebuilt to OEM specification, bench-tested, and backed by a warranty.