Grinding Services

Ultra-Precision Centerless

Pushing tolerances beyond the limit

Holding tolerances on diameter size and cylindricity to the sub-micron level – with Ultra-Precision Centerless Grinding we work closely with engineers who require a much higher level of precision for many of their high-tech parts.  We use only new CNC grinding equipment because today’s tolerances require today’s technology.

Infeed Grinding Video

Ultra-Precision Centerless Success

  • Aerospace - spool/sleeve match fits to .000050" (1.2 micron)
  • Mass Spectrometry - quadrupoles
  • Semi-Conductor - pick & place tooling
  • Prosthetics - spool/sleeve match fits to .000050" (1.2 micron)
  • High Pressure Hydraulics - spool grinds to .00005" (1.2 micron) cylindricity

Unique Capabilities

  • Diameter tolerances to +/-.000020" (20 millionths) (.5 micron)
  • Roundness to .000010" (10 millionths) (.25 micron)
  • Cylindricity to .000040" (40 millionths) (1 micron)
  • Surface finishes to < 2 Ra (.05 micron)
  • We strive for six-sigma capability on all applications
  • Centerless Thrufeed and Infeed – straight parts or parts with a head
  • Diameter sizes to .750"*
  • Lengths to 10"
  • Work with difficult materials; Tungsten, Titanium, Nitinol, Molybdenum, Exotic Alloys (Inconel, Hastelloy)

*Parts much larger than .750 x 10” can be ground, but sub-micron tolerances become much more difficult to hold as the part size grows. For parts larger than .750" x 10” please see Precision Centerless Grinding.

We're ready & waiting to take on your tightest tolerances.
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