Production Tolerances

For precision finishing operations special equipment
and techniques have been developed to enable the following results on production runs to be achieved
at economical cost.

Internal Grinding

Size to .0001” (.0025mm) on diameter

Roundness to .00002” (.0005)

Surface finish 5 micro inches CLA

Multiple bores .00015” (.004mm) from true position
up to 6” (152.4mm) centres

Cylindrical Grinding

Size to .0001” (.0025mm) on diameter

Roundness to .00002” (.0005mm)

Surface finish to 1.1/2 micro inches CLA (0,05 m)

Multiple diameters concentricity to .0001” (.0025 mm) T.I.R

Flat Surfaces

Thickness to .00005” (.0012mm)

Parallelism to .00003” (.0008mm)

Flatness 3 light bands over 3” (75mm) diameter

Surface finish 1 micro inch CLA (0,025 m)