We offer Benz live tool repair services for all Benz 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.
  1. Disassembled and cleaned.
  2. Inspected dimensionally and visually.
  3. Quoted for repair.
  4. The spindles are assembled with new precision grade sealed / shielded bearings.
  5. 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.
  6. As required, the lower, middle and upper bearing housings may be bored, bushed, and reground to proper concentricity and dimensional tolerance.
  7. The spindles are re-assembled.
  8. The spindles are installed in the housing.
  9. 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?

  1. 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.
  2. Price: Much lower price than the OEM, or the OEM distributor.
  3. USA repair: We repair the unit in Rockford, Illinois.  It is not shipped overseas, as is often the case for various machines.
  4. 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.
  5. Sealed bearings when available and possible conversion to ceramic bearings.
  6. Free inspections.
  1. The condition of the machine before the rebuild along with accurately diagnosing any and all problems.
  2. Installing proper replacement parts including spindle grade bearings and parts with OEM tolerances that are known only to OEM’s such as Ekstrom-Carlson.
  3. Precision tolerance machinery and tooling including grinding, plating and balancing equipment.
  4. Experience and quality workmanship of the repair technician.

Live Tool Repair • Case Studies

Benz, 114FAX12749E6AD-72-Z, BMT65-90 Degree, 6000rpm

Benz, 114FAX12749E6AD-72-Z, BMT65-90 Degree, 6000rpm DR7001980 Angular contact bearing DR7002068 Double row bearing DR7002586 Needle roller bearing DR7002181 Dust grind seal area DR7000024 Misc. Seals / Grease / etc... DR7000041 Spindle Repair Labor And Assy Inspection Results: The spindle journal diameters show no appreciable wear and are acceptable for proper bearing fits. Both seal areas on the journals show some wear. ... Read More

Benz drill head, 274M00106593, 4-10120, 10000rpm

Benz drill head, 274M00106593, 4-10120, 10000rpm DR7001010 Angular contact bearing DR7001194 Deep groove bearing DR7000024 Misc. Seals / Grease / etc... DR7000041 Spindle Repair Labor And Assy Inspection Results: The spindle journal diameters show no appreciable wear and are acceptable for proper bearing fits. The bearing housing inner diameter meets design specifications and shows no appreciable wear. No modification is ... Read More

Benz ag head, 728WGX005051718

Benz ag head, 728WGX005051718 DR7001087 Angular contact bearing DR7000235 Angular contact bearing DR7001210 Angular contact bearing DR7002134 Angular contact bearing DR7001822 Deep groove bearing DR7000009M Dust Grind Taper - Manual spindle motor or live tool DR7002505 Benz - Gear, Crown DR7002506 Benz - Gear, Pinion DR7002507 Benz - Gear, Drive Pinion DR7002508 Benz - Gear, Drive Pinion DR7000024 Bore & ... Read More

Benz

114DA03541E6, 3-13444, 5000rpm DR7000331 Angular contact bearing DR7001191 Needle roller bearing DR7000009M Dust Grind Taper - Manual spindle motor or live tool DR7002181 Dust grind seal area DR7001854M Plate & Grind Journal - Manual spindle motor or live tool DR7000024 Misc. Seals / Grease / etc... DR7000041 Spindle Repair Labor And Assy Inspection Results: The upper spindle journal diameter is ... Read More

Benz

114EA10441L4BL, 3-29348, 6000rpm DR7001079 Angular contact bearing DR7001191 Needle roller bearing DR7002329 Benz Operating Unit DR7002340 Benz Rotating Clamping Unit DR7000024 Misc. Seals / Grease / etc... DR7000041 Spindle Repair Labor And Assy Inspection Results: The spindle journal diameters show no appreciable wear and are acceptable for proper bearing fits. The bearing housing inner diameter meets design specifications and shows no appreciable ... Read More

Benz Radial Live Tool

HLT-RHTHm, 3-20405 DR7001011 Bearing S61908CTAA7DUL DR7002157 Bearing 6809-2RS DR7001191 Bearing INA HK20162RS DR7001854M Plate & Grind Journal - Manual spindle motor or live tool DR7002155 Benz Gear, Pinion DR7002156 Benz Gear, Crown DR7000024 Misc. Seals / Grease / etc... DR7000041 Spindle Repair Labor And Assy Inspection Results: •The spindle journal diameters show no appreciable wear and are acceptable for proper ... Read More

Benz Live Tool

114DA1044TE6A-Z, Haas 59-0082, 3-15837 DR7000331 Angular contact bearing DR7001191 Needle roller bearing DR7000024 Misc. Seals / Grease / etc... DR7000041 Spindle Repair Labor And Assy Inspection Results: •The spindle journal diameters show no appreciable wear and are acceptable for proper bearing fits. •The bearing housing inner diameter meets design specifications and shows no appreciable wear. No modification is required. •The ... Read More

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