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TC Adapter Torque Adjustment

How to adjust the Torque on TC "Torque Control" Tap Adapters
Adapters are shipping set for mild steel.  Adapters must be adjusted to compensate for:
  • Type of material & machine-ability of the material
  • % of Thread
  • Sharpness of the tap
  • Operational issues
    • Clutch is not engaging at the bottom of a hole, torque must be decreased
    • Clutch is engaging at the entrance, torque is set to low
    • Clutch is engaging at the bottom of the hole, torque is set to low
Note: Torque Control Adapters must be used in Tension & Compression tap holders.  
If the clutch engages the T&C holder will compensate for spindle feed.
Designed for use with Cut Taps, may not function properly with Roll Form Taps.

Required Tools:
  • Small flat head screw drive (to remove Cir-clip)
  • Face Spanner Wrench (to set adjusting ring)
  • Torque Wrench
  • Setting Shank (to Match the Tap shank and Square)
  • Setting Pot (to hold the adapter drive keys to set the torque)

Step 1
Remove the Cir-clip from the OD of the adapter as shown.  One end of the Cir-Clip enters a hole in the OD of the adapter, slides through to lock into one of the slots on the adjusting ring.  The Cir-clip holds the adjusting ring in position during operation.

 

Step 2
Use a face spanner (pier) wrench to adjust the Torque by turning the Adjusting Ring.
  • Clockwise to increase the Torque
  • Counter-Clockwise to decrease the Torque

Step 3
If a torque wrench is available set the torque to the desired setting.
  • Clockwise to increase the Torque
  • Counter-Clockwise to decrease the Torque
If torque is not correct, repeat Step 2 until desired torque value is met.
 

Step 4
Re-Install Cir-Clip to hold the adjusting ring in the desired position.  Make sure the slots in the face of the adjusting ring align with the Cir-clip cross hole to hold the adjusting ring in place.