Built for demanding fastener, aerospace, medical, and industrial manufacturing.
Vertical Carrier measurement access for cylindrical parts from 3/8–2 in (10–50 mm) in diameter.
The Universal Punch G2-20 is a -20 size-class Side Checker Gage configured with a Vertical Carrier for precision inspection applications that require indicator access from above the supported component.
Published capacity is 3/8–2 in (10–50 mm) diameter with part lengths up to 6 in (152 mm). The G2-20 is part of Universal Punch's modular Concentricity Gaging System, allowing the gage, rollers, indicator system and accessories to be configured around the actual component.
The G2 family uses the Universal Punch Side Checker architecture with a Vertical Carrier. The model suffix identifies the size class: G2 = Vertical Carrier architecture and -20 = 3/8–2 in / 10–50 mm diameter class.
The Universal Punch G2-20 is a Side Checker concentricity gage with a Vertical Carrier for cylindrical parts from 3/8–2 in (10–50 mm) in diameter and up to 6 in (152 mm) long.
The defining feature of the G2-20 is its Vertical Carrier. The carrier provides an indicator-mounting position above the supported component. Final probe direction, indicator position, stylus geometry, clearance and resolution should be configured from the actual part drawing and inspection requirement rather than from model number alone.
Identify the feature being measured, datum relationship, tolerance and intended inspection method.
Select cylindrical surfaces that can support repeatable rotational inspection on the main rollers.
Configure the carrier, indicator mount and stylus so the probe can access the measurement feature from above.
Select main rollers, top roller, indicator, resolution, accessories and manual or motorized rotation.
| Model | G2-20 |
|---|---|
| Product Type | Side Checker Gage |
| Carrier | Vertical Carrier |
| Part Diameter | 3/8–2 in / 10–50 mm |
| Published Part-Length Range | Approx. .18–6 in / 4.7–152 mm |
| Maximum Part Length | 6 in / 152 mm |
| Gage Length | 12.5 in / 318 mm |
| Gage Width | 4.5 in / 114 mm |
| Gage Height | Approx. 6 in / 152 mm |
| Shipping Weight | 6.4 lb / 2.9 kg |
The G2-20 uses the -20 roller family. Roller geometry should be selected from the available cylindrical support surfaces, adjacent features, clearances and the actual inspection requirement rather than diameter alone.
The G2-20's Vertical Carrier is one part of the measurement system. Indicator type, measuring range, resolution, stylus length, probe direction and mounting arrangement should all be selected around the actual inspection requirement.
The component is supported on the selected roller configuration while the top roller and indicator system are positioned for the required inspection. Support lands, nearby shoulders, splines, threads, grooves and other geometry can influence the final roller and contact configuration.
Current Universal Punch parts documentation identifies Standard Black at ≤4 µm and describes the gage classifications as calibrated and directly traceable to NIST.
Because G2-20 is a -20 model, it falls within the size class for which Precision Gold is published. Final G2-20 configuration and calibration package should be confirmed when ordering.
Universal Punch literature describes a manual timing-belt pulley system that provides smooth part rotation during inspection. Current parts documentation also identifies dedicated -20 timing belts and a complete drive system for -10 / -20 models.
Current Universal Punch parts documentation lists a G2-20 Variable Speed Motor Assembly with a 17 in / 432 mm base plate. The current variable-speed drive architecture is documented at 24 VDC / 0–10 rpm with forward/reverse control.
Choose G1-20 when lateral indicator access from the side best reaches the required inspection feature.
Choose G2-20 when indicator access from above better matches the inspection feature and measurement direction.
| Model | Part Diameter | Part Length | Carrier |
|---|---|---|---|
| G2-10 | 1/8–1 in / 3–25 mm | Up to 4 in / 102 mm | Vertical Carrier |
| G2-20 | 3/8–2 in / 10–50 mm | Up to 6 in / 152 mm | Vertical Carrier |
| G2-40 | 3/4–4 in / current -40 class | Up to 8 in / 203 mm | Vertical Carrier |
Send Universal Punch the part drawing, diameter, overall length, available cylindrical support lands, feature being inspected, measurement direction, tolerance, Vertical Carrier clearance, preferred indicator or readout, required resolution, calibration requirements, and whether manual or motorized rotation is preferred.
