Spindle Selection Guide

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• What operation needs to be performed by the spindle? 
• What are the operating parameters in terms of
  • Speed
  • Accuracy-Runout
  • Power Requirements-at work or tool
  • Tool or Work Holding Method 

• What is the type of Spindle Body? Whether
  • Base Mounted
  • Block Style
  • Flange Cartridge
  • Cartridge
  • Special Configuration 

• What type of Lubrication is required? Whether
  • Oil/Air
  • Grease
  • Recirculating Oil 

• What is the basic sizing of the spindle?
  • Basic sizing for boring spindles front bearing diameter which is usually equal or larger than the bore being machined. 
  • Basic sizing for Face Milling Spindle, the face mill is somewhere around 1.5-2 times the front bearing diameter. 
  • Largest spindle that meets RPM and Quill Size requirements. 
  • Internal Grinding
    • Determine operating speed and wheel size
    • Know the type of wheel holding
      • Taper Shank Quill
      • Straight Shank Quill
      • Wheel Mount (For larger bores) 

• External Grinding
  • Know the wheel size and operating speed.
  • What wheel mount is required based on wheel size?
  • Select spindle on the basis of top of taper of wheel mount. 

• What type of drive is required? Whether
  • Belt Driven
  • Direct Motorized
  • Coupled Motor
  • Gear Driven 

• What are the different factors to determine the type of spindle for any one given application? The various factors to consider are like
  • Speed
  • Rigidity
  • Size constraints
  • Lubrication
  • Special Accuracy Requirements
  • Motorized vs. Non-Motorized etc.