Tri Roll Thread Gage

The tri roll reduces gaging time over thread ring gages.

Tri roll thread gage. Tri roll thread gage usage practices 9 tri roll gage. O rotate part slightly and observe the reading. The gsg southern style thread ring features the unique automatic helical adjustment. Tri roll external thread gage operating procedure 817 870 8888 817 870 9199 usa page 8 of 15 june 6 2007 5.

For example the johnson gage company offers a tri roll type indicating thread comparator. While johnson gage and tri roll components are not interchangeable johnson gage thread roll style gaging systems provide identical thread inspection capability as the original tri roll design. The helix path of the thread along the line of adjustment remains true and in alignment throughout the life of the gage. If you wish to record your results electronically you can connect your tri roll gage to a printer processor dp1 vr with the correct connecting cable cc 905388.

One single gage can be used to inspect pre plate after plate class 1 1a 2 2a 3 and 3a eliminating the need for multiple fixed limit thread ring gages. Judge tool gage inc. Others have attempted to provide an indicating gage using thread rolls or thread segments for tapered threads. Thread inspection systems from johnson gage.

O rotate the part two or more times until the part has been rotated 360 degrees. Tri roll gages for both single size thread inspection and range adjustable applications. The rigid construction and constant measuring pressure of our tri roll thread comparators provide consistent and accurate readings. System 21a also states that the minimum material limit minimum pitch diameter must be verified by inspecting two thread flank locations over the length of the thread.

Proven in countless demanding manufacturing and inspection applications from automotive to medical to aerospace johnson gage thread inspection systems assure complete dimensional conformance of the essential. Johnson gage thread inspection systems consistently meet and exceed today s requirements. If you wish to do. Shop our tri roll external thread gage comparators.

This can be accomplished by using variable gaging or thread roll snap gages with pitch diameter elements. The aluminum body makes large gage rings light weight and easier to use. However this indicating gage is deficient insofar as it is incapable of gaging a threaded product at more than one circumferential position.