TVU-STH Series Powered Thread Units



New Vista’s flagship TVU-STHs are the most popularand widely used thread-verification and thread-chasing units in the world. Favored for automated and robotic applications, the STHs were first introduced to the market in 2006. Having made an early reputation for reliability, today’s models will run either male or female threads; they are more compact, easier to integrate, and accept more accessories than ever before.

STHs have always been offered in either DC motor or servomotor versions, with the servomotor type the most popular. Beginning in 2016, New Vista established a new preferred standard in the Mitsubishi line of servomotor. This change was made in response to customer requests; the new Mitsubishi servomotors as supplied by New Vista are now accompanied with a preprogrammed local PLC and a touchscreen HMI, making integration much faster and simpler. Also, for countries where Allen-Bradley PLCs are widely employed, the Mitsubishi system offers direct compatibility.

You can see an STH in action at our STH video page. With over twenty different variations, you are guaranteed to receive a Unit optimized for your application. They can handle thread sizes from M2 to M50 (#2 to 2 inches), with cycle times as low as 0.6 seconds.

STH Units employ New Vista’s patented technology which means there is adjustable preset torque for entering the thread but full motor torque when backing out. This eliminates the risk of damaging the threads at entry or having a jammed thread gage.

TVU-STHs are available with New Vista’s Quick-Change Toolholders, so gage changing can be done in seconds. For STHs used in robotic applications, thread gage members can be changed automatically, employing New Vista’s Tool Docking System. In this way, several different thread sizes can be checked in sequence without any manual intervention. You can see an early version of the Tool Docking System in this video.

If you are interested in these Units, ask for Catalog Publication 200-019. Give us a call or send us an email. Our U.S.-based people speak English and Spanish. Expert applications service is available from our U.S. location, and in several other countries as well. Please inquire.

Jack Wickham
New Vista Corporation