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Spindle Repair Process


Receiving and Evaluation

  • Upon receipt of spindle Centerline documents shipping container condition, it’s contents and spindle condition through shipping, then checks the spindle repair project into our Work Order System
  • If the spindle turns freely and feels smooth enough or we have instructions from the customer to do so, we will attempt to run the spindle and record critical test run data such as temperature, vibration and runouts
  • If the spindle’s condition is outside acceptable parameters (most are, as they have been sent in for repair) we will begin to disassemble and evaluate individual spindle components for replacement or rework

Repair Quote

  • After thorough evaluation of all individual components is complete we will prepare and email you a repair quote broken down into labor, bearings, parts and rework costs.
  • Repair quotes provide a “Standard Repair” price and delivery as well as an “Expedited Repair” price and delivery for you to choose from. If you send your spindle in for “Expedited Repair” from the outset it will be pushed through as quickly as is possible and only expedited service will be quoted.
  • The repair quote will also provide details about the condition of the spindle and it’s components, and if possible, the cause of failure.
  • At this point your spindle that has been broken down to component level will be stored in our climate controlled repair storage area while we await your Purchase Order and approval to proceed with the repair as quoted.

Spindle Repair

Spindle repair actually begins during our evaluation process when we first consider the engineered strengths and weaknesses and application of your particular spindle. It is with this suitability for purpose, and optimizing performance in mind that we determine whether the components are suitable, require rework, or require replacement as well as targeting less than optimal design issues.

Depending on your spindle type and damage level, some of the things you can expect from a spindle repair:

  • Rework can include manufacture of new parts, grinding, hard chrome plating, design alteration to address design or application problems
  • Bearing preparation, lube measurement in the case of grease lubrication, spacer preparation and grinding operations, setting bearing preload
  • Tool clamping system will be refurbished to ensure correct tool contact, tool gap and retention force within established parameters
  • Balancing of components and assemblies as required to reduce spindle vibration to it’s lowest possible level
  • Assembly consists of preceding points (and where applicable, electrical, switches, sensors, lubrication, cooling, pneumatic, hydraulic and condition monitoring systems) and brings all verified components into the verified whole of your working spindle
  • Quality Control Testing in Centerline’s state of the art QC Department verifies and records all applicable measurements including
    • Runout at critical areas
    • Vibration Analysis
    • Electrical Systems
    • Tool Holding Systems, pneumatic, hydraulic and manual
    • Lubrication Systems
    • Cooling Systems
    • Condition Monitoring Systems
    • Encoder feedback

Shipping and Data Archiving

Spindle repair data is recorded and archived for every spindle repaired including default operating parameters, incoming values (before repair) and final inspection values (after repair). Lubrication, cooling,  hydraulic, electrical, pneumatic, tool holding, vibration and critical measurements are among the data sets collected and archived for future reference and trend spotting.

Download Spindle Break-in and Storage procedure document (Español)

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