Air Plug Gauge: Range 1.5 – 250 mm

FEATURES:

  • Quick and easy checking of bore
  • Standard 2 jets for checking size, taper, ovality
  • 3 jets at 120 degree for average size & tri-lobed effect (for diameter 6 mm & above)
  • With extensions to check deeper bores
  • Can be supplied to check through or blind bores
  • Can be supplied with multiple jets
  • Hard chrome plated for extended life
  • Can be supplied with carbide sleeve on request
  • For specific depth or land width checking, adjustable depth collars can be provided

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Ø D mmA C F**G*HMIN RANGEMAX RANGE
THROUGHBLINDTHROUGHBLIND
1.5-3.0 #4-12-2.5-7±0.005±0.015
3.0-4.06.532420.52.5418.5±0.005±0.015
4.0-6.09331252.5418.5±0.005±0.015

  • Ø 1.5 to 3 mm air plugs are not supplied with extensions and are supplied in hand held design only with PVC tubing
  • For deeper holes, use extensions which increase by 25 & 50 mm (above Ø 3 mm only)
  • Ø 1.5 to 6 mm air plug gauges are supplied on MOD-2A and ClearLine ±0.025 mm unit
  • # not supplied in blind bore design
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Ø D mmA F** MOD1A/CLG* MOD1A/CLMIN RANGEMAX RANGE
THROUGHBLIND
6.0-13.0 15.04.04.5/3.56.5/6.0±0.005±0.030
13.0-20.015.04.54.5/3.56.5/6.0±0.005±0.030
20.0-35.015.04.54.5/3.56.5/6.0±0.005±0.030
35.0-60.015.04.54.5/3.56.5/6.0±0.005±0.030

  • For deeper holes, use extensions which increase by 50, 100, 200 and 300 mm
  • Quick entry pilot is provided for air plug gauges above 13 as a standard (others on request)
  • As a special case, air plug gauges can be supplied on MOD 2A unit up to Ø 50 mm only to suit super blind or for less land. Maximum range for this will be ±0.020 mm only (others on request)
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Ø D mmA F** MOD1A/CLG* MOD1A/CLMMIN RANGEMAX RANGE
THROUGHBLIND
60.0-100.0 15.04.54.5/3.56.5/6.0100.00±0.005±0.030
100.0-150.0#15.04.54.5/3.56.5/6.0150.00±0.010±0.030
150.0-200.0#15.04.54.5/3.56.5/6.0200.00±0.015±0.060

  • Supplied hand held as standard for PFL MOD-1A only
  • For deeper holes, extended “M” can be provided
  • # not supplied for use on ±0.025 mm ClearLine unit and MOD-2A
  • Above 200 mm and up to 250 mm on request

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  • Air plug gauge for 0.0005 mm least count are given up to Ø 50 mm only
  • Each air plug gauge requires two setting rings to set the air plug on the read out unit. The difference between the high and low setting rings supplied covers the component tolerance or the maximum range mentioned in the above table whichever is lower
  • Depth collar is supplied against order for positioning air plug gauge jets to fixed depth
  • The minimum bore land “F” and “G” mentioned, is excluding chamfer distance and fillet radius
  • For special blind bore air plugs (super blind – G less than mentioned in the above chart) or any other special requirement (3 jet or 5 jet design to check lobing), please send the component drawing and ask for a quote

Abbreviations

  • MOD 1A = PFL Air Gauge Unit Module 1A
  • MOD 2A = PFL Air Gauge Unit Module 2A
  • CL = ClearLine air gauge unit

Important rule in air gauging
Lesser the clearance, higher the accuracy and vice versa