Strain Gages for Measuring Axial Tension of Bolts
If it is difficult to bond a strain gage to the surface of a bolt for measuring the tightening stress, these gages enable the measurement by embedding into a hole, 2 mm in diameter, bored from the top head of the bolt.
|Materials Resistive element||CuNi alloy foil|
|Operating temperature in combination with major adhesives after curing (°C)||EP-370: Normal temp. to 50ºC|
|Operating temperature in combination with major leadwire cables (°C)||φ0.14 Polyester-coated copper cable 5 cm long|
|Applicable linear expansion coefficients (×10-6/℃)||ー|
|Strain limits at normal temp. (approx. %)||ー|
|Fatigue lives at normal temp. (times)||ー|
KFB120Ω Uniaxial (For axial tension of bolt measurement)
|KFB-1.5-120-C20-11 N5C2||1.5||Approx. 6||5||φ1.9|
|KFB-3-120-C20-11 N5C2||3||Approx. 6||11.5||φ1.9|
Bore diameter 2
*We have offered service with our sophisticated bonding work of strain gage onto bolts provided by our customers.