GTI Spindle Technology provides its clients incomparable machine tool spindle repairs on all types of Gros-ite grinding machines. They have in house resources and experienced sales staff to offer you effective and cost benefit solutions. Most importantly, we have full access to parts as well as complete manufacturing capabilities that allows us to repair your machine tool spindle properly the very first time.

GTI is the spindle company for your GROS-ITE sales, service and repair requirements

Looking for Help?

For all your spindle solutions; call us on our Toll Free Number: 888.473.9675 or write to us at info@gtispindle.com.

Gros-ite Spindle Re-manufacturing Services

• AnalysisOur technicians thoroughly inspect the spindle to identify the problem correctly before moving ahead with any spindle repair work. All spindles are subjected to the following 5 point assessment:
  • Incoming Vibration Aanalysis Incoming vibration analysis is performed in order to determine: bearing condition, level
    of unbalance, non-repetitive runout.
  • Assembled Spindle Inspection Pilot ID or taper runout on tool end of shaft to determine possible spindle crash or
    improper tooling. Rear taper runout inspection to determine possible over tightening of belts or improper tooling. Preload test to determine bearing wear or spindle crash.
  • Disassembled Spindle Inspection Pilot ID or taper inspection to determine spindle crash, improper tooling or overheating.
    Bearing journal inspection to determine improper bearing fits or use of spindle after
    initial failure.
    Overall shaft condition to determine crash, overheating, lack of coolant or overloading.
  • Bearing Condition An inspection of bearings is performed under lab conditions by factory trained bearing
    specialists to determine lack of lubrication, over speeding, spindle crash, overloading,
    loss of preload, contamination (coolant or other material) or overheating due to
    electrical problems.
    In addition, we have the access to all Bearing OEM’s facilitation and personnel.
  • Engineering Recommendations We recommend spindle design changes or enhancements to improve spindle longevity
    and/or performance. For example, if a spindle has failed due to contamination, a design
    change such as new labyrinth nuts, air purging, hybrid bearings or improved sealing
    design will be recommended and implemented.
• Removal The spindle needs to be removed from the grinding machine. Removal can be done either by the customer themselves or by GTI technicians who can be sent to the client’s site for removal of the spindle.
• Repair Post planning of Gros-ite spindle repair corrective actions, rebuilding as well as preventative maintenance work advice is given which needs to be taken care of before installing the spindle back into the machine.
• Testing The spindles are tested to check if all the machine interface parts such as encoders, proximity switches etc. are functioning properly and all spindles have to pass the vibration analysis and review of an autonomous GTI QC manager.
• Reinstallation Gros-ite machine tool spindle post repair are reinstalled and checked for performance and reliability; which can be executed upon customer request by a GTI technician. Detailed documentation of the repair work is provided to all GTI customers.

Gros-ite Spindle Services

• Emergency response for 24 hours
• 1 – 3 days of turnaround for the quotes on different non-emergency repair work of spindles and also of spindle rebuilds.
• Vibrational analysis and analysis of the failure to be done onsite.

Whether the repairing is done on Gros-Ite high frequency spindle that is  motorised or the Gros-Ite spindle that is based on hydrostatic method and which are run with ultra-precision of wheel heads -  we will definitely back all of our repair work of the spindle with a warranty of one year. The risk that is there is for not calling GTI for a repair quote for the Gros-Ite precision spindle. The warranty is on the manufactured and remanufactured spindles. If you have any question on repair, call the number 888.473.9675 or email at info@gtispindle.com and place your query for the program for cost reduction.