RTU Thread Verification & Remediation Units

New Vista RTU Thread Units

— For Thread Gaging, Plain Hole Gaging, and Thread Remediation —

— For Robotic Applications —

The servo-driven RTU-SM2 Gaging Unit shown here is used for thread verification work. The chuck supplied with it is the auto-detachable Type J. It is shown tooled with a compliant toolholder holding an M8 GO Gage.
RTU-SM2 with Tooldock
An RTU-SM2 approaching a New Vista Type J Tool Dock. The two tools at the left are for thread gaging. The two at the right are for thread remediation — chasing out existing threads.
A custom RTU unit designed for restricted access
A custom RTU-2000-SM2-4x-16-R designed to chase threads in a constricted access scenario.
An RTU-2000-SM2-4x-16 mounted with a Supercompliant Toolholder and Thread Chasing tool.
RTU Mounted on robot
An RTU-SM2 with mounted Supercompliant Toolholder. This arrangement will pick up holes that are ± 1mm out of position and angularly mispositioned as well — and gage them as if they were positioned perfectly.
U.S. PATENTS 7,059,055 and 7,513,720 CANADIAN PATENT 2,521,347 OTHER PATENTS PENDING


  • Quickly and automatically verifies or chases threaded holes (or external threads) by powering a suitable tool into (or onto) and out of (or off of) the part. Versions are capable of “GO” gaging, “NO GO” gaging, combination gaging or thread chasing.
  • Sensitive high speed drive allows the tool to stop in case of missing, short, or improperly formed threads. This creates a “reject” signal.
  • Spring-biased spindle prevents damage to end of thread at start of engagement.
  • Will verify blind holes (or male threads) accurately for thread depth (length). Will mount in any orientation.
  • Will not jam or stick in short or obstructed (reject) threads.
  • Does not subject the part (or the spindle) to high force or torque levels…even with a reject.
  • A single STH Unit will work with a variety of threads. No leadscrew is employed.
  • Proven out for your application before shipping.
  • Shipped with complete installation instructions. Integration is simple.

Specifications And Capacities For RTU Units

  • Cycle times shown below are for thread verification applications, and where the thread length is equal to the thread diameter. Long threads, long holes, external threads and long outside diameters can take longer.
RTU-250-SM2-1X-12.7 1:1 M2 – M5 (#2 thru #10) 32mm (1.25 in.) 0.8 seconds
RTU-500-SM2-1X-12.7 1:1 M5 – M22 (#10 thru 7/8”) 32mm (1.25 in.) 1.0 seconds
RTU-2000-SM2-4X-16 4:1 M12 – M50 (1/2” thru 2”) 32mm (1.25 in.) 2.0 seconds
RTU-2500-SM2-7X-16 7:1 M19 – M64 (3/4” thru 2-1/2”) 32mm (1.25 in.) 3.2 seconds
RTU-3000-SM2-7X-16 7:1 M50 – M100 (2” thru 4”) 38mm (1.50 in.) 4.0 seconds (for M50 size)
  • Additional dash-number designations:
    • Add –ES suffix for extra stroke versions.
    • Add –CMB suffix for “GO / NO GO” (combination gaging) versions. Also for verifying high/low thread pitch diameter limits, as with pipe threads.
  • Included with every Unit:
    • Mounted servomotor, with drive.
    • Complete PLC control system.
    • Mounted depth sensors.
    • Type J Chuck.
    • Cables for motor, sensors and controls.

Applications Assistance

An Application Form is available from the New Vista website: https://www.newvistacorp.com/contact/. Fill in the blanks and submit or send to [email protected]. Or you can get help by calling this U.S. telephone number: 410-342-3820, then 0, and then ask for Applications Assistance. We speak English and Spanish. A New Vista Applications Engineer will help you select the proper Thread Unit and Thread Gage or Remediation tool — and work with you if you need a special, or a system.