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Spindle Repair

EDAC Machinery’s Precision Spindle Repair Center knows that when your machine is down, it’s costing you money. With over 100 years of spindle design, manufacturing and rebuilding expertise, we provide precise, high quality spindle repairs in the shortest time possible to get your machines up and running.

EDAC Machinery’s Gros-Ite Precision Spindle team repairs and remanufactures all makes and models of ball, roller, hydrostatic and hydrodynamic bearing spindles. This includes motorized and non-motorized, as well as foreign and domestic spindles.

In our ISO 9001 certified facility, our highly skilled and trained technicians and engineering professionals have over 100 years of combined experience that ensures your spindles are rebuilt to original specifications.

Precision Spindle Repair Process

Upon receipt of your equipment, it is promptly disassembled, cleaned and inspected. All spindle components are meticulously examined for proper fit and geometry using the latest measuring equipment technology. An evaluation is made and corrective action is determined. A comprehensive quote will be provided to you for your approval before any repairs are made.

We return all of your spindle’s components back to their critical dimensions per print specifications or, where possible, we improve the components to enable trouble free top performance. We can also reverse engineer and manufacture destroyed or obsolete components if needed.

All rotating components are dynamically balanced with computerized equipment to ISO 1940 Grade - G0.4.

Spindles are assembled with precision grade ABEC 7/9 angular contact style ball bearings or 0/00 grade tapered roller bearings, steel on steel or hybrid ceramic. In certain applications, we will use our patented HOLO-ROL™ Bearings as needed by design. Lubrication systems can be matched to customer specification.

All assembly is done in our clean room to provide for the ultimate bearing integrity.

Our modern test facility certifies all spindles at maximum speed after temperature stabilization to ensure customers receive a reliable, high performance spindle.

Each spindle is vibration certified for:

  • Displacement of 0.0000050 inch Peak to Peak
  • Velocity 0.04 inches / second Peak Overall
  • Acceleration of 0.4 inches / second squared Peak at 5 times operating speed
  • Spike Energy

Final paint, powder coat, black oxide and Armolloy finishes are provided where needed.

A final inspection of all critical data and features includes:

  • Tool Interface run out
  • Temperature at operating speed
  • Lubrication Settings
  • Coolant Temperature and Flow
  • Motor data: Volts, Hertz, FLA
  • Bearing Stiffness
  • Drawbar Pull Force
  • Feedback and Settings for all Electronic Sensors
  • Any other customer required specifications

All data is documented and logged into EDAC Machinery's database and is included in the shipping container along with the spindle’s warranty. Every spindle is shipped in a custom fitted container.

Spindle Repair

We will arrange to have your assembly delivered to our facility where it will be promptly disassembled, inspected and evaluated.

Precision Spindle Repair

A completely repaired precision spindle, fully tested and ready to ship back to the customer.

All EDAC Machinery / Gros-Ite Repaired Spindles Have a One Year Warranty

Emergency Repair Service

In case of emergency where downtime is critical, 24 to 48 hour turnaround time is available.

Spindle Enhancements

If needed, our team of design engineers can address anticipated problems with your spindle or process that will result in premature or reoccurring failures. In these cases we will offer design change recommendations in order to deliver a higher performing spindle with more up time and a longer service life.

We can enhance existing spindles to increase speed, stiffness, and improve sealing. Furthermore, we can completely redesign or reconfigure your spindle to suit a new application or improve productivity.

Precision Spindle Replacement

In many cases, we can immediately ship you a replacement ‘in-stock’ spindle. We then use your spindle as a “core” component which is then rebuilt and put into our select inventory of spindles. Ask us about our “Zero Down Time” Program.

Spindle Storage and Maintinance Programs Available

Bearing and Critical Component Management Programs Available

Off-Site Diagnostic Service Available

Understanding the Cause of and Solution to Spindle Failure

Spindles are a necessary component in a variety of industries and serving many applications. A high quality spindle, designed using the latest technology, makes all the difference in the world. Yet many don’t know exactly what a spindle is, how it works, why it may fail, and what should be done in the event of a failure. We’d like to answer these questions for you.

What is a Spindle?

A spindle is a highly precise instrument that utilizes rolling element bearings—typically ball bearings or roller bearings—that are produced with tolerances ground to within millionths of an inch. The bearings are then fitted into precision ground or bored housings with similar sizes and tolerances, making spindles similar to inspection grade equipment in terms of tolerance. Precision spindles also integrate bearing retaining caps, precision bearing locknuts, precision bearing spacers, and sealing systems, and their configurations are almost endless. They should be designed to the specific parameters of their application.

Why Does a Spindle Fail?

Most spindles do not fail due to bearing fatigue, as many people think, as they are precisely designed with ample load carrying capacity. Rather, most fail for reasons that include contamination of the bearing lubricant, abuse, improper lubrication procedures, and any combination of these reasons.

Importance of Spindle Failure Evaluation

Because failure reasons are varied and many, it’s crucial to have a spindle repaired by an expert. A proper evaluation will ensure quality repair that will extend the bearing life and limit the need for further repairs, therefore saving money and down time. Proper evaluation includes a test run (if necessary), cleaning and disassembly of parts, document construction, and thorough parts inspection.

Who Should Repair Your Spindle?

Simply put, a well-repaired spindle should function on the same level as a new spindle. While many manufacturers will repair their own spindles, they often overlook the full evaluation process and therefore the cause of failure, as well as the importance of cleanliness in the process. Other smaller shops or repair services lack the resources, space, personnel, and equipment to perform a truly effective repair. By choosing a company such as EDAC Machinery, repairs are done by those with the capability to design and manufacture new spindles, and they will integrate the latest technology to provide peak operating performance after conducting a thorough evaluation for the cause behind the failure. A company offering full manufacturing capabilities, engineering support, parts cleaning equipment, and almost infinite knowledge and resources will ensure overall value and longer lasting results down the line.

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