Expert Spindle
Repair for Every
Application
Call 866-868-6761 or email us
Downtime is Not an Option for Today’s Industries
Whether you operate multiple high-speed machining centers with advanced spindle monitoring technology or a single surface grinder, SPS has the skilled spindle repair technicians and support team to deliver fast, high-quality spindle rebuilding services that keep your production on track. With expertise in precision machine tool spindle repair, spindle motor repair, and onsite taper grinding, we provide comprehensive solutions to ensure your operations run smoothly and efficiently.
SPS Spindles expertise expands through partnership with Capellini Electrospindles
Our partnership with Capellini Electrospindles has provided us with the resources to service today’s most advanced spindles. Our technicians are trained on some of the most technologically advanced spindle systems available and we continue to invest in the necessary equipment to service not only the spindles, but also the auxiliary systems used in the spindle systems found in today’s machine tools. This specialized training includes support for Duplomatic, an Italian manufacturer of rotational axes used in machine tool applications. We’ve gained expertise in axis drive and clamping systems, along with the inspection equipment and techniques necessary for verifying position location and accuracy.
Industries We Serve
Aerospace
Cutting Tools
Injection Molding
Power Generation
Automotive
Medical
Furniture
Heavy Equipment
Bearings
Gas & Oil
Defense
Recreational Vehicle
Brands We Service
SPS Spindle repairs, rebuilds and maintains spindles by Capellini, Duplomatic, DMG Mori Seiki, Doosan, Mazak, Mitsui Seiki, and Toyoda.
For a comprehensive list of brands and spindle types we service, CLICK HERE
Spindle Repair and Rebuilding
Whether you are running multiple high speed machining centers with the latest in spindle monitoring technology or a single surface grinder, SPS has the trained spindle repair technicians and customer support staff to meet your needs.
Spindle Component Manufacturing
At SPS Spindle, we can design, machine, and grind most spindle components to a tolerance needed for a machine tool spindle assembly.
Gearbox / Transmission Repair
Our facility is equipped with modern and innovative tools to offer our customers complete gearbox repair service that is done quickly to minimize your machinery downtime.
Onsite Taper Grinding
Utilizing our custom designed CNC Spindle Taper Grinding system, an SPS technician can grind the taper to your required specification without removing the spindle from the machine. Read More
Multi-Access Head Milling Head Repair
Our facility is equipped with modern and innovative tools to offer specialized multi-axis milling head rebuilding services done quickly to minimize your machinery downtime.
Grind/Plate/Grind
Whether it is tolerances, inspection advice, or providing complete reworking services, SPS will be your source for Grind/Plate/Grind Spindle Component Reworking Services.
Spindle Drawbar Rebuilding
SPS Spindle offers complete rebuilding services on spindle drawbars and tool-holding systems with issues resulting from low drawbar pressure or a faulty drawbar component.
Onsite Spindle Analysis
SPS Spindle offers an Onsite Spindle Analysis Service that provides valuable information on the spindle drawbar system, tool holding taper, spindle bearing condition, and the vibration signature of the rotating assembly.
Ball Screw Repair
SPS has the experience and expertise necessary to manufacture many machine tool components. We can, in most cases, provide 24-hour Reload/Repair and, if needed, manufacture new parts from sample or print.
Frequently Asked Questions
Q. What is the cause of most spindle failures?
While spindle failures can result from a variety of issues, the majority of premature spindle failures can be traced back to preventable maintenance and tooling problems rather than the spindle itself. The most common root causes include contamination, insufficient drawbar force, damaged toolholders, poor spindle taper contact, crashes, and improper operating practices. Over time, these issues create vibration, heat, and excessive bearing loads that lead to expensive spindle repairs.
At SPS Spindle Parts & Service, we frequently find that low drawbar force is one of the leading causes of spindle taper damage. When the drawbar cannot properly clamp the toolholder, microscopic movement occurs between the toolholder and the spindle taper. This movement, known as fretting, damages the taper, increases runout, reduces machining accuracy, and places additional stress on the spindle bearings.
Q. How much drawbar force should my spindle have?
The recommended drawbar force for your spindle depends on the machine manufacturer, spindle design, and toolholder style. The best place to find the correct specification is in your machine’s operator or maintenance manual.
If you no longer have the manual or the specification isn’t available, refer to the drawbar force chart below for typical values by machine and spindle type. If you’re still unsure, the SPS Spindle Parts & Service team can help you determine the correct drawbar force for your equipment.
Maintaining the proper drawbar force is critical to spindle performance. Too little clamping force can allow the toolholder to move within the spindle taper, causing fretting, taper damage, increased runout, chatter, poor surface finish, premature tool wear, and even tool pullout during machining.
In fact, low drawbar force is one of the leading causes of spindle taper damage. Regular drawbar force testing is one of the simplest and most cost-effective preventive maintenance practices you can perform to extend spindle life, improve machining accuracy, and avoid expensive spindle repairs.
