Concentricity Gages | Concentricity Fixtures

CPF Concentricity Gage

The rotoround is an adjustable fixture used to check concentricities, runout, and or TIR of one or more surfaces to a basic diameter. Three precision bearings set the primary datum plane and support the weight of the part while 2 roller bearings mounted on the angled base define the circular datum. Indicators then contact the part as it is being rotated to determine various parameters.

Concentricity gage CPF features:

  • .0001" grad. large format double dial test indicator
  • .00005" grad. large format double dial test indicator
  • Two sets of adjustable load bearings (3 each)
  • Two sets of banking bearings (2 each)
    • bearing number 9028 .25" OD x .12" thick
    • bearing number 2426 .312" OD x .12" thick
  • 15° angled base plate
  • Tool set with holder
  • Wooden storage box

CPF Concentricity Gage

CPF concentricity gage - for parts 1-5" (25mm-130mm) in diameter with maximum weight of 8 lbs. (3.5Kg.)

CPF-1 Concentricity Gage

CPF-1 concentricity gage features:

  • One .0005" grad. AGD group 2 dial indicator
  • Two .0001" grad. AGD group 2 dial indicator
  • One magnetic base stand
  • One indicating unit with right angle transfer
  • One adjustable height stand
  • Three sets of adjustable load bearings in .50" increments (3 each)
    • bearing number 9020 .866 OD x .406" thick
  • One set of banking bearings (2 each)
    • bearing number 9018 .75" OD x .281" thick
  • 15° angled base plate with adjustable bridge gantry
  • Tool set with holder
  • Wooden shipping/storage case

CPF-1 Concentricity Gage

CPF-1 concentricity gage - for parts 3-12" (75mm-300mm) in diameter with maximum weight of 25 lbs. (12Kg.)

CPF-2 Concentricity Gage

CPF-2 concentricity gage features:

  • Two .0005" grad. AGD group 2 dial indicator
  • One magnetic base stand
  • One adjustable pole stand
  • Three sets of adjustable load bearings in .50" increments (3 each)
  • One set of banking bearings (2 each)
    • bearing number 9029 1.10" OD x .562" thick
  • 15° angled base plate
  • Tool set with holder
  • Wooden shipping/storage crate

Dorsey also manufactures a line of heavy duty Roto Rounds with higher weigh capacity and portable concentricity fixtures for use if your part cannot be placed on a CPF fixture. Contact us for details.

Download catalog page with complete product offering

Acrobat Page D-16

CPF-2 Concentricity Gage

CPF-2 concentricity gage - for parts 10-30" (250mm-760mm) in diameter with maximum weight up to 250 lbs. (114Kg.)

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