Quick-Change Toolholder

  • Allows quick installation/removal of thread gage members on TVM-SC, TVS-SV, and TVU-HH.

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Series Features

  • With Quick-Change Toolholders, entirely different threads parts can be run within an interval of just a few seconds.
  • The TH-250 is a Quick-Change type that is used in New Vista TVM-SC and TCM-SC series machines.
  • The TH-350 is also a Quick-Change type. It is used with the New Vista TVS-SV and TCS-SV Stations and the New Vista Handheld Models TVU-HH and TCU-HH.
  • The DRGN types are for use with New Vista Thread-Verification Units/Stations in applications where compliance is an issue.

Specifications & Capacities

  • With the TH-350 Toolholder, the Outer Bodies are marked with both metric and inch graduations. Graduations permit depth settings in 0.1mm (.004”) increments. With interpolation, settings of 0.05mm (.002”) or less can be attained. The Thread Gage or Chasing member can be preset to its proper axial position in the Quick-Change Toolholder so that no depth rod adjustment needs to be made.
  • The DRGN types are “compliant” Toolholders, used mostly in applications where the part is held firmly (clamped), and where misalignment can be an issue. In the smaller sizes they provide compliance to the extent of Ø1.20mm (.048”). The larger sizes accommodate Ø2.00mm (.080”).
Toolholders Fits New Vista Units Remarks Accept Tool Shank/Adapter
TH-075-N-F-X-12.7
TVM-SC
This is the “Standard”. It’s the split design.
Straight shank
TH-250-QC-F-C-12.7
TH-250-QC-F-DRGN-12.7
TVM-SC
TVM-RSC
TVS-SR

Various
TH-250-QC-F-T-12.7
TVM-SC

Taper shank
TH-325-N-SL-T-12.5
TH-325-QC-SL-T-12.5
TH-325-N-SL-C-12.5
TH-325-QC-SL-C-12.5
TVU-STH
TVM-ESC

Various
TH-325-QC-F-T-12.7
TVS-SV
TVU-HH

Taper shank
TH-325-QC-SL-DRGN-12.5
TVU-STH

M18
TH-330-AC-SL-DRGN-CL-16
TVU-STH-R
Size 20 DRGN Type Auto-Change Toolholder (for robotic work).
Short straight shank with flat.
TH-350-QC-F-C-12.7
TVS-SV
TVU-HH
With graduated depth settings.
Various
TH-450-QC-SL-DRGN-T-12.7
TVS-FLX
DRGN compliance with micro depth setting.
Takes Taper Shank TGMs
TH-450-QC-SL-DRGN-A-12.7
TVS-FLX
DRGN compliance with micro depth setting.
Takes “Reversible” TGMs
TH-550-QC-SL-DRGN-16.0
TVS-FLX

Various
TH-650-QC-SL-DRGN-16.0
TVM-RSC
For threads up to Ø90 (3-1/2”). Compliance is Ø2.00mm (Ø.080”)…an offset of 1.00mm (.040”).
For Trilock hollow Thread Gage
Members: Ø.812” or Ø.937” pilots.
TH-455-QC-F-DRGN-A-12.7
TVS-SV
TVG Series
DRGN compliance with micro depth setting.
Takes “Reversible” TGMs