Step-by-step repair and rebuild

The spindle is the heart of modern machine tool

When it stops, so does production and profitability. Which is why SKF applies a rigid, step-by-step process for every job. We keep a laser-focus on quality – and keep your spindle downtime minimal. 

We use ABEC-7 and ABEC-9 precision bearings, equal to or better than the originals, and, when the application demands, ceramic hybrid bearings. Quality control is built into every phase of repair, and every step is completed on-site in our state-of-the-art repair and manufacturing facilities. Our process includes:

Receiving

Our technical staff checks every spindle that arrives for repair. Each unit is visually inspected prior to disassembly for signs of external damage that might have caused failure. Every unit is logged in, and a work order opened. This work order will follow your spindle through each step of the repair process, detailing the work that is needed and completed.

Disassembly

In a dedicated area designed to maintain quality control, our technicians carefully disassemble your unit, looking for signs of contamination, lack of oil, misuse, or other apparent signs of failure. Once the spindle is completely disassembled, each component is polished to remove surface rust or damaged high spots. Each component is then solvent-washed and air-dried. 

Inspection

The disassembled spindle next goes to the inspection area, where trained technicians inspect and analyze each component for size, run out, alignment and parallelism. After careful inspection, a written report is created discussing probable root causes for the spindle's failure and methods for preventing future failures.

Machining

Virtually any component can be machined, remanufactured, or manufactured new in our fully outfitted, state-of-the-art machine shops. Experienced SKF machinists will rebuild or reproduce any part you need. This in-house SKF capability assures quality control and your timely return to productivity.

Grinding

SKF operates a modern, climate-controlled grinding area equipped with new state-of-the-art grinding machines. These machines are capable of grinding to very precise tolerances, including ODs, IDs, and internal and external tapers to .000025" or less TIR. We also have center hole, surface, rotary and jig grinding capability to tolerances of .000010".  Again, this in-house capability assists in quality control and your timely return to productivity.

Balancing

Unbalanced components will seriously reduce bearing life and cause a poor finish on the final product. Correcting an imbalance requires removing or adding weight to the component. Proper balancing will significantly improve a spindle's performance and extend the life of its bearings, in addition to maintaining improved quality on all work.

Using the latest computer-controlled balancing equipment, SKF performs the balancing process in steps. When all the components are assembled, the unit's balance is rechecked and corrected as necessary.

Assembly

Highly experienced SKF assembly specialists work with all-new bearings and filtered lubricants in a dedicated clean room. SKF assembly specialists are trained in all phases of machining, boring, grinding, jig grinding, lathe and CNC machining operations.

Testing

After assembly, spindles are brought incrementally up to operating speed in our dedicated clean-testing area. Spindles are tested to verify speed, vibration, temperature and critical runouts. All critical operating parameters are monitored to ensure that spindles operate to original specifications or beyond.

Shipping

Stringent standards for quality control are maintained through the shipping process. If a spindle requires paint, an appropriate color is carefully applied. Spindles are then wrapped in non-reactive material and encased in foam. High-strength shipping cartons are used for added protection during shipping. Spindles weighing 125 lbs. or more are shipped in custom-built wooden crates.
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