Drawing for illustration. Every gage is made to your size.
Made to order · ACC · ACS
Air Snap Gage (C-Frame)
Measures a shaft from the side, so the part can stay on the grinder or between centers.
- Sizes
- .60" to 7.81" (15.2 to 198.3 mm)
- Part number
ACC or ACS-[jet+class]-[material]-[size]- Example
ACC-12-C-.7500/.7505
Priced by size in the online configurator
Request a snap gage quote →- Build the part number and see the price in minutes
- Formal PDF quote emailed to you
- Dual Master or Single Master tooling
An air snap gage (also called a C-gage) measures a shaft from the side, so the part can stay on the grinder or between centers. The open C-frame slips over the diameter, and two opposed jets in the throat read size without touching the part.
How it is built
- Two opposed jets in the throat read diameter the same way an air ring does
- Carbide back stops locate the part against a hard, wear-resistant surface
- Kevlar-reinforced nylon bumpers keep the frame from marking a finished shaft
- Supplied with a hose assembly to suit your readout
Styles
| Code | Style | Face to jet (Dim. A) |
|---|---|---|
| ACC | Center jet | .375″ (9.5 mm) |
| ACS | Shoulder jet | For measuring close to a shoulder |
Where a snap gage helps
- In-process grinding: check size without taking the part out of the machine
- Long shafts: no need to slide a ring the length of the part
- Shouldered diameters: a shoulder-jet gage reads close to the face
- Several diameters at once: multi-channel gages are built to order
How to order
Snap gages follow the same rules as rings: ACC or ACS, then jet code with clearance class (Dual Master) or spec code (Single Master), material, then size. Dual Master gages take min/max sizes; Single Master gages take the nominal master size.
Snap gages are quoted by our team. Send the shaft size and tolerance, your readout make and model, and any nearby shoulders, and we'll quote the gage, masters and hose. See the air tooling catalog (PDF) for details.