Strain Gages for Measuring Axial Tension of Bolts

  • RoHS



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.

Major Properties

Materials Resistive element CuNi alloy foil
Materials Base Polyimide
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
Self-temperature-compensation (°C)
Applicable linear expansion coefficients (×10-6/℃)
Strain limits at normal temp. (approx. %)
Fatigue lives at normal temp. (times)

Products table

All display

KFB120Ω Uniaxial (For axial tension of bolt measurement)

  • RoHS

5 gages/pkg

Model Dimensions (mm)
Gage(Grid) Base
Length Width Length Width
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

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Bore diameter 2
*We have offered service with our sophisticated bonding work of strain gage onto bolts provided by our customers.