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Punch Marking Verification Torque Wrenches

Catalog Link (PDF):  [Page 16]  
 Operation Guide (PDF):  [PunchTorqueWrench.pdf]  


The Van F. Belknap Co. Marking Torque Wrench will leave a positive mark on a nut, bolt or stud end when the preset torque value of the torque wrench is reached: IT WILL NOT MARK ACCIDENTALLY. When torque verification is required, the Belknap Marking Torque Wrench will provide visual, permanent proof that the bolted connection was torqued.

We have provided two different series to choose from for your applications. The STM (Side Torque Marker) Series is for torquing nut or bolts where proof of torque would be marked on the side of a fastener. The TTM (Top Torque Marker) is for applications where torque and a mark is desired on the top of the bolt or the end of a protruding stud.

The STM Series carry on the Belknap tradition of interchangeable drive ends. All special drive ends are easily replaced or changed for different torque applications.
Features:
  • Quality steel construction.
  • Tamper-proof preset torque.
  • Tool can be customized to adapt to clearance problems.
  • Marks ONLY when preset torque is reached.
  • Accuracy = ± 4%.
  
  • Production line tested.
  • Insures integrity of your fastener connection.
  • Patented by Van F. Belknap Co., Inc.
  • Requires 90 psi standard non-lubricated shop air.

TOP TORQUE MARKER
TTM Series
  Torque Range
Part Number ft-lbs. Nm
TTM-10 4-10 5-13
TTM-50 10-55 13-74
TTM-150 50-150 67-200
TTM-300 100-300 135-400

Note: Minimum fastener size is 1/2" or 13mm. Cannot mark Allen or Torx screws.

  
SIDE TORQUE MARKER
STM Series
  Torque Range
Part Number ft-lbs. Nm
STM-10 4-13 5-17
STM-60 13-60 17-81
STM-100 55-100 75-135
STM-150 85-200 115-271

Note: Minimum fastener size is 9/16" or 14mm.

Torque capacity of drive end or socket may be limited by torque output. Please check your requirements.

Striking pin life expectancy: Steel fasteners: 750 cycles; Brass fasteners: 1500 cycles.
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