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Universal Punch Concentricity Gaging SystemG2 Series · -40Vertical Carrier
G2-40 Side Checker Concentricity Gage
Vertical Carrier inspection access for larger cylindrical components from 3/4–4 in diameter.
The Universal Punch G2-40 is the largest size class in the G2 Side Checker family.
Its defining feature is the Vertical Carrier, which provides indicator access from above
for inspection features best accessed from above the supported component.
Universal Punch source documentation consistently publishes a 3/4–4 in diameter class,
part lengths up to 8 in (203 mm), and an 11.2 lb (5.1 kg) shipping weight.
G2-40 · Side Checker Gage · Vertical Carrier.
Large -40 platform with Vertical Carrier access from above the supported component.
Part Diameter3/4–4 inCurrent selection class: 20–105 mm
Part LengthUp to 8 in203 mm
CarrierVertical CarrierG2 family architecture
Shipping Weight11.2 lb5.1 kg
G2-40 Product Definition
The largest Vertical Carrier configuration in the G2 family.
The G2 family uses a common inspection architecture: Side Checker Gage + Vertical Carrier.
The model suffix determines the size class. G2-40 extends that architecture to the large -40 inspection platform.
G2-40 at a glance
The Universal Punch G2-40 is a -40 Side Checker concentricity gage with a Vertical Carrier for larger cylindrical components.
The consistently published inch diameter range is 3/4–4 in, with part lengths up to 8 in (203 mm).
The system is configured around the selected gage model, main rollers, indicator system and required accessories.
Model logic: G2 identifies the Vertical Carrier architecture. -40 identifies the large size class.
G2-40 profile. The Vertical Carrier is the defining G2 measurement-access feature.
Vertical Carrier Architecture
Position the measurement indicator above the inspection feature.
The Vertical Carrier positions the measurement indicator vertically above the supported component, giving the indicator and stylus an overhead approach to the inspection feature.
Final carrier position, stylus reach, contact direction and clearance should be selected from the actual drawing and inspection requirement.
01
Confirm the -40 inspection envelope
Verify part diameter, length and usable support surfaces before selecting the final configuration.
02
Identify repeatable cylindrical support lands
Select surfaces that can support stable rotational inspection on the chosen main rollers.
03
Confirm Vertical Carrier access to the feature
Configure indicator position, stylus reach and measurement direction around the actual feature.
04
Configure the complete measurement system
Select indicator style, range, resolution, stylus, mounts and manual or motorized rotation around the actual print.
Selection principle: choose G2-40 when the component requires the -40 inspection envelope and Vertical Carrier access from above is appropriate for the feature being measured.
Published G2-40 Specifications
A single technical reference for the G2-40 platform.
Large-capacity G2 platform. Published platform dimensions and capacity are shown at right.
Model
G2-40
Gage Type
Side Checker Gage
Carrier
Vertical Carrier
Published Inch Diameter Range
3/4–4 in
Published Part Length
0.25–8 in / 6.3–203 mm general-data range
Gage Length
14.5 in / 368 mm
Gage Width
6 in / 152 mm
Gage Height
Approx. 8 in / 203 mm
Shipping Weight
11.2 lb / 5.1 kg
Published -40 Support Pressure
32 lb / 4.4 Nm
Legacy Product Literature20–102 mmPaired with the consistent 3/4–4 in inch range.General Data Table20–104 mmCurrent general-data reference for G1/G2-40.Current Selection Table20–105 mmCurrent -40 model-selection class.
Metric documentation note:
Universal Punch source documents are consistent on the 3/4–4 in inch range but contain different metric references by document generation.
For a specific metric application, confirm the current production capacity with Universal Punch engineering when quoting.
-40 Roller Selection
Select support geometry from the component, not from diameter alone.
Current Universal Punch parts documentation publishes three primary main-roller styles for the -40 model class.
Final selection depends on the component's support lands, adjacent geometry and required inspection clearance.
Standard -40 Top Roller
230-401 × 5/16 in · 25 × 8 mm
Full Plain Roller Set140-40FP
Half Plain Roller Set140-40HP
Quarter Plain Roller Set140-40QP
Top Roller
Published Size
Current Parts-List Note
210-40
3/4 × 1/2 in · 19 × 12 mm
Published -40 option
221-40
7/8 × 1/2 in · 22 × 12 mm
Published -40 option
230-40
1 × 5/16 in · 25 × 8 mm
Current standard
233-40
1 × 5/8 in · 25 × 16 mm
Published -40 option
231-40
1-1/8 × 5/8 in · 28 × 16 mm
Published -40 option
232-40
1-1/4 × 3/4 in · 32 × 19 mm
Published -40 option
Top-roller documentation note:
current parts documentation identifies 230-40 as the standard -40 top roller, while older Universal Punch catalog literature illustrates a different standard. Confirm the current production configuration against the actual component when quoting.
Indicator access matters. The Vertical Carrier, indicator mount and stylus geometry should be selected as one measurement system.
Indicator Configuration
The readout is part of the gage specification.
Universal Punch defines the Concentricity Gaging System around three primary selections:
gage model, main rollers, and indicator(s) / accessories.
Current parts documentation includes analog and digital indicators, multiple mounts, swivel supports and dedicated -40 carrier components.
Publish the accuracy class that applies to the -40 model family.
Standard Black
≤4 µm0.00016 in published accuracy classification
Current Universal Punch parts documentation identifies Standard Black at ≤4 µm and describes the gage classifications as calibrated and directly traceable to NIST.
Not published for -40Current parts documentation limits Precision Gold to -10 / -20 models only
The G2-40 page should therefore publish Standard Black unless Universal Punch engineering specifically confirms a current custom or exception configuration.
Manual Rotational Drive
Dedicated -40 drive components support rotational inspection.
Current Universal Punch parts documentation lists dedicated Timing Belt Sets for Model -40
and a Complete Drive System for Model -40 consisting of belts, pulleys, drive knob and pin.
Published ComponentTiming Belt Set · -40
Published SystemComplete Drive System · -40
G2-40 support and contact detail. Roller geometry, top contact, Vertical Carrier position and indicator stylus should be configured as one inspection system.
Optional Powered Rotation
A dedicated G2-40 variable-speed motor assembly is currently published.
Current Universal Punch parts documentation lists a Part No. 273-40 — G2-40 Variable Speed Motor Assembly
with a 19 in / 482 mm base plate.
The current drive-system section identifies 24 VDC / 0–10 rpm,
forward/reverse control and 110/220 VAC transformer support.
Choose G2-40 when indicator access from above better matches the inspection feature, stylus direction and available clearance.
Selection rule: G1-40 = Side Carrier. G2-40 = Vertical Carrier. The -40 suffix identifies the larger part-capacity class; the drawing and measurement location determine the carrier architecture.
G2 Side Checker Family
One Vertical Carrier architecture across three size classes.
Manufacturer-controlled information for the G2-40 configuration.
The strongest reference for a production G2-40 is the combination of current Universal Punch model-selection,
parts, accessory, general-data and calibration documentation together with the actual customer drawing.
This page distinguishes current part-system information from historical catalog references where those sources differ.
Current Model SelectionG2-40 · Side Checker Gage · Vertical Carrier
Current model-selection documentation identifies G2-40 as the -40 Vertical Carrier configuration.
Current -40 Roller System140-40FP · 140-40HP · 140-40QP
Current parts documentation identifies Full Plain, Half Plain and Quarter Plain -40 main-roller sets.
Published Standard Top Roller230-40 · 1 × 5/16 in · 25 × 8 mm
Identified as the standard top roller for the -40 model class.
Current Accuracy ClassificationStandard Black · ≤4 µm
Precision Gold is published for -10 / -20 model classes only in the current parts documentation.
Current Motorized Option273-40 · G2-40 Variable Speed Motor Assembly
19 in / 482 mm base plate with the current 24 VDC / 0–10 rpm variable-speed drive architecture.
G2-40 Technical FAQ
Questions engineers, inspectors and buyers ask before specifying a G2-40.
The G2-40 is a -40 Side Checker concentricity gage with a Vertical Carrier for larger cylindrical components. Universal Punch consistently publishes a 3/4–4 in inch diameter class with part lengths up to 8 in (203 mm).
Universal Punch consistently publishes a 3/4–4 in inch diameter range and part lengths up to 8 in (203 mm). Metric references differ between source-document generations, so a specific metric application should be confirmed when quoting.
The inch specification remains consistently published at 3/4–4 in, while Universal Punch source documents from different generations use 20–102 mm, 20–104 mm and 20–105 mm references. This page therefore treats 3/4–4 in as the primary published diameter range and documents the metric-source differences separately.
Universal Punch publishes 11.2 lb (5.1 kg).
Current G1/G2-40 general-data literature lists approximately 14.5 in (368 mm) gage length, 6 in (152 mm) width and approximately 8 in (203 mm) height.
Both are -40 Side Checker gages in the large-size class. G1-40 uses a Side Carrier for lateral indicator access, while G2-40 uses a Vertical Carrier for indicator access from above the supported component.
Current Universal Punch parts documentation lists Full Plain 140-40FP, Half Plain 140-40HP and Quarter Plain 140-40QP main roller sets for -40 models.
Current Universal Punch parts documentation identifies part number 230-40, 1 x 5/16 in (25 x 8 mm), as the standard -40 top roller. Older catalog literature shows a different standard, so the current production configuration should be confirmed when quoting.
No. Current Universal Punch parts documentation limits Precision Gold to -10 and -20 model classes. G2-40 is a -40 model, so the published classification for this page is Standard Black.
Current Universal Punch parts documentation identifies Standard Black at ≤4 µm (0.00016 in) and describes the gage classifications as calibrated and directly traceable to NIST.
Yes. Current Universal Punch parts documentation includes analog and digital test indicators together with multiple indicator mounts, swivel supports and carrier accessories. The appropriate range, resolution and mounting should be selected from the inspection requirement.
Yes. Current Universal Punch parts documentation explicitly lists a G2-40 Variable Speed Motor Assembly, Part No. 273-40, with a 19 in (482 mm) base plate.
The current Universal Punch variable-speed drive architecture is documented at 24 VDC with a 0–10 rpm range and forward/reverse control.
Choose G2-40 when the required measurement feature is best approached from above using the Vertical Carrier. Choose G1-40 when lateral Side Carrier access better matches the inspection feature.
Send the part drawing, diameter, overall length, usable cylindrical support surfaces, feature being measured, measurement direction, tolerance, Vertical Carrier clearance, preferred indicator or readout, required resolution, calibration requirements, and whether manual or motorized rotation is preferred.
Configure the G2-40 Around the Actual Component
The drawing—not the product photograph—determines the final configuration.
Send Universal Punch the part drawing, diameter, overall length, available cylindrical support lands,
feature being inspected, measurement direction, Vertical Carrier clearance, tolerance, preferred indicator/readout,
required resolution, manual or motorized rotation preference, and calibration requirements.
