We offer Mazak live tool repair services for all Mazak precision tools. Our repairs will typically cost 1/2, or less than 1/2 the price of a new live tool. Plus, we can upgrade the original non-sealed bearing design, to a sealed / shielded bearing design at all bearing locations. We keep bearings in stock for these live tools to allow us to keep pace with our repair volume. Lead-time can be as short as 2-3 days.
- Most live tools exceeding 0.001″ runout are due, or almost due, for a repair. 0.0008″ or less is the target runout for a live tool.
- Live tools like to rest as long as they cycle at full speed or maximum load. 5 minutes is a typical maximum run time followed by a 5 minute rest.
- 150 to 160F temperatures are common when running at full load.
- Disassembled and cleaned.
- Inspected dimensionally and visually.
- Quoted for repair.
- The spindles are assembled with new precision grade sealed / shielded bearings.
- If necessary, the spindle is ground to true the taper, and / or the bearing journals are plated and re-ground to proper bearing tolerance and total indicated runout.
- As required, the lower, middle and upper bearing housings may be bored, bushed, and reground to proper concentricity and dimensional tolerance.
- The spindles are re-assembled.
- The spindles are installed in the housing.
- The unit is run tested for 5-10 hours with testing of vibration, temperature, and noise levels
Why should you have your multi-spindle boring head, high speed right angle head, or other aggregate head, repaired by Ekstrom-Carlson?
- Lead-time: 1-2 Week average for multi-spindle heads, including tear down, inspection, quotation, and repair. 3-5 days for right angle heads and live tooling repairs.
- Price: Much lower price than the OEM, or the OEM distributor.
- USA repair: We repair the unit in Rockford, Illinois. It is not shipped overseas, as is often the case for various machines.
- Parts repair: Where possible, we will save money by repairing motor spindles and gear spindle shafts. Some manufacturer’s representatives will always quote a brand new unit if the unit drive shaft is damaged, or if the bearings require replacement. 75% of the time, we can save the original unit at less than 50% the cost of new.
- Sealed bearings when available and possible conversion to ceramic bearings.
- Free inspections.
- The condition of the machine before the rebuild along with accurately diagnosing any and all problems.
- Installing proper replacement parts including spindle grade bearings and parts with OEM tolerances that are known only to OEM’s such as Ekstrom-Carlson.
- Precision tolerance machinery and tooling including grinding, plating and balancing equipment.
- Experience and quality workmanship of the repair technician.
Live Tool Repair • Case Studies
Manufacturer: Alberti Part Number: KZ-1510
LIVE TOOL Repair ALBERTI KZ-1510 Published: 05/19/26 01:33PM The ALBERTI KZ-1510 is a live tooling attachment designed for seamless integration of milling operations into CNC lathe setups. At Ekstrom Carlson, we provide expert evaluation and restoration services to ensure your tool's peak performance and reliability. Performance You Can See Our restoration ensures optimal rotation and stability for precise machining. Reliability ... Read More
Manufacturer: Alberti Part Number: KZ-1510
LIVE TOOL Repair ALBERTI KZ-1510 Published: 05/19/26 01:27PM Ensure your CNC operations run smoothly with our expert repair services for the Alberti KZ-1510 live tool adapter. Our team focuses on restoring functionality and precision, minimizing downtime and maximizing productivity. Performance You Can See Experience improved rotational stability and precision with our meticulous rebuild processes. Reliability You Can Trust Every unit ... Read More
Manufacturer: HSD Part Number: H6314HD398
SPINDLE Repair HSD H6314HD398 Published: 05/19/26 01:22PM The HSD H6314HD398 is a high-speed spindle motor designed for optimal performance in demanding applications. With a maximum RPM of 21,000, this component is crucial for achieving superior machining precision. Ekstrom Carlson provides expert evaluation and repair services to ensure your spindle operates at its best, minimizing downtime and maximizing productivity. Performance You ... Read More
Manufacturer: Hardinge Inc. Part Number: 904-0000-14-0342
SPINDLE Repair HARDINGE INC. 904-0000-14-0342 Published: 05/19/26 01:22PM At Ekstrom Carlson, we specialize in restoring Hardinge components like the 904-0000-14-0342 to peak performance. Our expert team ensures your equipment is production-ready, minimizing downtime and maximizing efficiency. Performance You Can See Our restoration process ensures optimal functionality, even for components with unknown specifications. Reliability You Can Trust Each unit undergoes rigorous ... Read More
Manufacturer: Alberti Part Number: KZ-1510
LIVE TOOL Repair ALBERTI KZ-1510 Published: 05/19/26 01:22PM The Alberti KZ-1510 live tool is engineered for CNC lathes and milling machines, facilitating rotary cutting operations with precision. Trust Ekstrom Carlson for expert evaluation and restoration to ensure your tools perform at peak efficiency. Performance You Can See Our detailed diagnostics ensure the Alberti KZ-1510 operates with optimal precision. Reliability You ... Read More
Manufacturer: SU-MATIC Part Number: LAU-100-ER50-1-A
LIVE TOOL Repair SU-MATIC LAU-100-ER50-1-A Published: 04/24/26 03:44PM Enhance your CNC machine's performance with the SU-MATIC LAU-100-ER50-1-A. Designed for rotating operations, this live tool offers reliable service and precision. Performance You Can See Achieve up to 4,000 RPM for enhanced machining precision. Reliability You Can Trust Our controlled rebuild process ensures dependable operation and reduced downtime. PRODUCT OVERVIEW The SU-MATIC ... Read More
Manufacturer: Mazak Part Number: AGH2854L, BCV50-NBS20-230S
LIVE TOOL Repair MAZAK BCV50-NBS20-230S Published: 04/24/26 03:10PM The Mazak BCV50-NBS20-230S live tool is designed for powered CNC operations, delivering enhanced milling capabilities. Trust Ekstrom Carlson for expert evaluation and service to ensure optimal performance and reliability. Performance You Can See Our diagnostics ensure your live tool meets precise operational standards. Reliability You Can Trust Controlled rebuild processes restore your ... Read More
Manufacturer: BIG Daishowa Part Number: BCV50-NBS20-230S
LIVE TOOL Repair BIG DAISHOWA BCV50-NBS20-230S Published: 04/24/26 02:32PM Enhance your machining operations with the BIG DAISHOWA BCV50-NBS20-230S Angle Head. Designed for precision and reliability, this live tool attachment maximizes operational efficiency. Performance You Can See Achieve up to 3000 RPM for consistent machining accuracy. Reliability You Can Trust Expertly evaluated and rebuilt for optimal performance. PRODUCT OVERVIEW The BIG ... Read More
Manufacturer: Star Part Number: 221-50-01-3485
LIVE TOOL Repair STAR 221-50-01-3485 Published: 04/24/26 01:46PM The STAR 221-50-01-3485 Straight Live Head is a reliable component for your machining needs. With its robust design, it ensures consistent performance in industrial environments. Performance You Can See Delivering precision through expertly crafted live tooling. Reliability You Can Trust Each unit undergoes thorough diagnostics and controlled rebuild. PRODUCT OVERVIEW The STAR ... Read More
Manufacturer: Eppinger Part Number: STRAIGHT LIVE HEAD
LIVE TOOL Repair EPPINGER STRAIGHT LIVE HEAD Published: 04/24/26 12:57PM Discover the reliability and precision of Eppinger's Straight Live Head. Ideal for enhancing machining operations, this tool ensures consistent performance. Trust Ekstrom Carlson for expert evaluation and service. Performance You Can See Achieve optimal machining accuracy with our comprehensive diagnostics and rebuild services. Reliability You Can Trust Our controlled rebuild ... Read More