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: 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
Manufacturer: Sandvik Coromant Part Number: C4-191.01-40 060
LIVE TOOL Repair SANDVIK COROMANT C4-191.01-40 060 Published: 04/24/26 10:50AM Experience enhanced performance with the Sandvik Coromant spindle. Our expert services ensure your equipment operates at peak efficiency, reducing downtime and extending tool life. Performance You Can See Achieve superior rotation and stability with precision servicing. Reliability You Can Trust Rigorous diagnostics and controlled rebuilds ensure dependable operations. PRODUCT OVERVIEW ... Read More
Manufacturer: Suzuki Part Number: CSM4-03
SPINDLE Repair SUZUKI CSM4-03 Published: 04/24/26 09:53AM Experience unparalleled service with our expert evaluation and restoration of the Suzuki CSM4-03 spindle. Precision and reliability are our priorities, ensuring your equipment returns to peak performance. Performance You Can See Our restoration ensures optimal rotation and stability for the Suzuki spindle. Reliability You Can Trust Each unit undergoes a controlled rebuild process ... Read More
Manufacturer: EPPINGER Part Number: 07.31.118
LIVE TOOL Repair EPPINGER PRECI-FLEX® 07.31.118 Published: 04/23/26 02:19PM Experience the precision and reliability of the EPPINGER PRECI-FLEX® 07.31.118. Our expert repair services ensure optimal performance and extended lifespan. Performance You Can See Achieve superior rotation and stability with precise diagnostics and expert repair. Reliability You Can Trust Benefit from controlled rebuilds and thorough testing to ensure reliable performance. PRODUCT ... Read More
Part Number: MTA2762-10
Component Repair MT MTA2762-10 Published: 03/20/26 01:00AM At Ekstrom Carlson, we specialize in the repair and servicing of MT components, including the MTA2762-10 model, to restore the performance, functionality, and reliability required in demanding industrial applications. Performance You Can See Maximum operating speed of 6000 RPM supports high-performance industrial tasks. Reliability You Can Trust Thorough inspections and controlled repair processes ... Read More
Manufacturer: Elektromotoren Bielefeld AG Part Number: Z1-220-3-4
Electric Motor Repair ELEKTROMOTOREN BIELEFELD AG Z1-220-3-4 Published: 04/22/26 01:35PM Experience the reliability of Elektromotoren Bielefeld AG's Z1-220-3-4 electric motor. At Ekstrom Carlson, we provide expert evaluation and repair services to ensure your motor operates at peak efficiency. Performance You Can See Ensure optimal operation with precise diagnostics and quality rebuilds. Reliability You Can Trust Our controlled processes guarantee consistent ... Read More