Deltronic Individual Micro Balls – Imperial Sizes 1/16”—1/2” in 1/32” Steps

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Discounts are available for quantities OVER 10. Please call for pricing.

Deltronic Individual Micro Balls

Chrome alloy steel balls, plus/minus .0001″ diameter, .000.025″ sphericity.

  1. Checking micrometers at the exact spot for wear, as shown at point ‘A,’ where Micro Balls are ground and lapped to a sphericity of .000025 inches.
  2. Checking wall thickness from the inside curve to the flat on the outside end.
  3. In turning and grinding, where shoulder locations with respect to each other or to a common end are held close (.001”), it is imperative that the depth of the center drill be maintained. Choose a Micro Ball that is tangent to a center and measure overall as ‘A’ or indicate the distance as ‘B.’
  4. Checking the depth of valve seats, ways, slots, etc.
  5. For boring of collets, select a set of Micro Balls that match the width of slots on the collet. Coat the Micro Balls with grease or Vaseline before inserting. Close the collet and bore.”


Inches Metric QTY 1-9 10-Up* Bulk Pkg**
1/16”—1/2” in 1/32” 1mm—12mm in mm steps $9.80 ea $6.80 ea $6.00 ea
17/32” — 1” in1/32” 13mm—20mm in mm steps $14.60 ea $11.80 ea $10.60 ea

*Assorted sizes for quantity price break are allowed.

**Bulk packaged Micro Balls are not individually boxed; minimum quantity of 10 balls per size and 50 balls total are required.


1/16”, 3/32", 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2"

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