Air caliper are ideal for measuring diameters of jobs held between the centers on machine or interrupted shafts like crankshafts
“V” support for perfect centering and stability
‘’V” support with tungsten carbide pads for diameter above 16 mm
Ideal for collared diameters i.e. crankshaft pin and journal
Multi-jet air calipers available for multi-point measurement i.e. to check crowning of crank pins and journal diameters
Can be supplied bench mounted for checking small diameters or against specific needs
Application
Air Caliper Data Sheet
Ø D mm
A
B
C
J
H
Ø G
E (OFFSET) MOD 1A/ CL
F (CENTRAL) MOD 1A/ CL
MIN RANGE
MAX RANGE
CENTRAL
OFFSET
10.0-16.0
D+34
54
12
6.0
4.0
100
18.0
6.5/5.5
4.5/3.5
±0.005
80% OF SCALE
16.0-26.0
D+24
54
12
6.0
4.0
100
18.0
6.5/5.5
4.5/3.5
±0.005
80% OF SCALE
26.0-50.0
D+24
60
16
8.0
4.0
100
18.0
6.5/5.5
4.5/3.5
±0.005
80% OF SCALE
50.0-75.0
D+28
75
18
9.0
4.0
100
18.0
6.5/5.5
4.5/3.5
±0.005
80% OF SCALE
75.0-100.0
D+32
80
20
10.0
4.0
150
25.5
6.5/5.5
4.5/3.5
±0.005
80% OF SCALE
#100.0-125.0
D+32
100
20
10.0
4.0
150
25.5
6.5/5.5
4.5/3.5
±0.010
80% OF SCALE
#125.0-150.0
D+40
105
20
10.0
4.0
150
25.5
6.5/5.5
4.5/3.5
±0.010
80% OF SCALE
#150.0-225.0
D+40
155
20
10.0
4.0
150
25.5
6.5/5.5
4.5/3.5
±0.010
80% OF SCALE
Air calipers are supplied hand held as standard
# not supplied for use on ± 0.025 mm ClearLine unit
General Notes
Air calipers for 0.0005 mm least count are given up to Ø 50 mm only
Each air caliper requires two setting masters to set the air caliper on the read-out unit. The difference between the high and low setting masters supplied, covers the component tolerance or the maximum range mentioned in the above table, whichever is lower
The minimum gauging land “E” and “F” mentioned above is excluding chamfer distance and fillet radius
For special blind shafts (super blind- ‘E’ less than mentioned in the above chart) or any other special requirement (multi jet design air caliper), please send the component drawing and ask for a quote
Two Jet Air Ring gauge to check outside diameter, taper & ovality
Three jet Air Ring gauge for detecting tri-lobed effect for diameter above 6 mm only
Can be supplied with tungsten carbide sleeve on request for checking hardened job
Can be supplied with multiple jets
Special Application
Data Sheet
Ø D mm
A
T
B
E
F
MIN RANGE
MAX RANGE
2.0 – 3.0
35.0
9.0
4.5
6.6
2.5
±0.005
80% OF SCALE
3.0 – 6.0
35.0
9.0
4.5
6.6
2.5
±0.005
80% OF SCALE
Supplied hand held as standard
Supplied on MOD 2A / ClearLine only
Supplied with 2 jets as standard
Not supplied in offset design
Ø D mm
A
T
B
B1
E (OFFSET) MOD 1A/ CL
F (CENTRAL) MOD 1A/ CL
MIN RANGE
MAX RANGE
6.0-20.0
60.0
20.0
10.0
4.5
6.5/5.5
4.5/3.5
±0.005
80% OF SCALE
20.0-40.0
86.0
20.0
10.0
4.5
6.5/5.5
4.5/3.5
±0.010
80% OF SCALE
40.0-65.0
120.0
20.0
10.0
4.5
6.5/5.5
4.5/3.5
±0.015
80% OF SCALE
65.0-100.0
154.0
20.0
10.0
4.5
6.5/5.5
4.5/3.5
±0.020
80% OF SCALE
100.0-120.0
184.0
20.0
10.0
4.5
6.5/5.5
4.5/3.5
±0.020
80% OF SCALE
120.0-150.0
225.0
20.0
10.0
4.5
6.5/5.5
4.5/3.5
±0.020
80% OF SCALE
Supplied unit mounted as standard
As a special case, air ring can be supplied on MOD-2A up to dia. 50 mm only, to suit super blind and less land
General Details
Air ring gauge for 0.0005 mm least count are given up to Ø 50 mm only
Each air ring gauge requires two setting masters to set the air ring on the read-out unit. The difference between the high and low setting masters supplied covers the component tolerance or the maximum range mentioned in the above table, whichever is lower
The minimum gauging land “E” and “F” mentioned above, is excluding chamfer distance and fillet radius
For special blind shafts (super blind- ‘E’ less than mentioned in the above chart) or any other special requirement (3 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.
Setting Rings for Air Plug Gauge Range 1.5 – 315 mm
FEATURES OF BAKER SETTING RINGS FOR AIR PLUG GAUGE
Rings for air plug gauge Used for setting of pneumatic length measuring instruments
Made from oil hardening non shrinking gauge steel, hardened and tempered to 60-62 HRC
Subzero treated at -80°C for long term dimensional stability
Actual dimensions duly etched
Calibrated at 20°C under Standards Room conditions against National/International traceable standards
Certificate of calibration is provided along with each master traceable to National/International standards. Certificate under NABL (as per ISO 17025) as per request
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
Special Application
Data Sheet
Ø D mm
A
C
F**
G*
H
MIN RANGE
MAX RANGE
THROUGH
BLIND
THROUGH
BLIND
1.5-3.0 #
4
–
12
–
2.5
–
7
±0.005
±0.015
3.0-4.0
6.5
3
24
20.5
2.5
4
18.5
±0.005
±0.015
4.0-6.0
9
3
31
25
2.5
4
18.5
±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
Ø D mm
A
F** MOD1A/CL
G* MOD1A/CL
MIN RANGE
MAX RANGE
THROUGH
BLIND
6.0-13.0
15.0
4.0
4.5/3.5
6.5/6.0
±0.005
±0.030
13.0-20.0
15.0
4.5
4.5/3.5
6.5/6.0
±0.005
±0.030
20.0-35.0
15.0
4.5
4.5/3.5
6.5/6.0
±0.005
±0.030
35.0-60.0
15.0
4.5
4.5/3.5
6.5/6.0
±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)
Ø D mm
A
F** MOD1A/CL
G* MOD1A/CL
M
MIN RANGE
MAX RANGE
THROUGH
BLIND
60.0-100.0
15.0
4.5
4.5/3.5
6.5/6.0
100.00
±0.005
±0.030
100.0-150.0#
15.0
4.5
4.5/3.5
6.5/6.0
150.00
±0.010
±0.030
150.0-200.0#
15.0
4.5
4.5/3.5
6.5/6.0
200.00
±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
General Notes
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
