KFRB Series
General-purpose Foil Strain Gages

Summary

The KFRB series foil strain gages are durable and easy-to-use high-grade strain gages.
The gage element is sandwiched between heat-resistant polyimide base and cover, thereby letting it exhibit high performance in a wide temperature range.

Click here for the [Typical Strain Gage Bonding Procedure]

Click here for the [Strain Gages with Pre-attached Lead Cables]

Major Properties

Materials Resistive element	NiCr alloy foil
Materials Base	Polyimide
Operating temperature in combination with major adhesives after curing (°C)	PC-600: -196 to 150ºC CC-36: -30 to 100ºC CC-33A: -196 to 120ºC EP-340: -55 to 150ºC CC-35: -30 to 120ºC
Operating temperature in combination with major leadwire cables (°C)	Polyester-coated copper wire: -196 to 150ºC Vinyl-coated flat cable (L-6, L-7): -10 to 80ºC Mid-temperature cable (L-11, L-12): -100 to 150ºC
Self-temperature-compensation (°C)	0 to 150ºC
Applicable linear expansion coefficients (×10^-6/℃)	11, 16, 23
Strain limits at normal temp. (approx. %)	2.2 (Strain measurement at mid temperature, for transducers)
Fatigue lives at normal temp. (times)	1x10⁶ (±1500μm/m) (Strain measurement at mid temperature, for transducers)

Relative images

When ordering, suffix the lead-wire cable code to the model number with a space in between.
(Except for D9 and D19)

E.g.
KFRB-02N-120-C1-11 With 2 polyester-coated copper wires 10 cm long
→ KFRB-02N-120-C1-11 N10C2

KFRB-05-120-D25-11 With a vinyl-coated ﬂat 3-wire cable 5 m long
→ KFRB-05-120-D25-11 L5M3S

If no lead-wire cable code is suffixed, the gage is delivered with gage leads only.
(Silver-covered copper wires 25 mm long)

For details, please refer to the [Strain Gages with Pre-attached Lead Cables]

Products table

All display

KFRB 120Ω Uniaxial

10 gages/pkg

Model	Dimensions (mm)
	Gage(Grid)		Base
	Length	Width	Length	Width
KFRB-5-120-C1-11	5	2.5	10	3.7
KFRB-5-120-C1-16	5	2.5	10	3.7
KFRB-5-120-C1-23	5	2.5	10	3.7
KFRB-2-120-C1-11	2	2.5	6	3.7
KFRB-2-120-C1-16	2	2.5	6	3.7
KFRB-2-120-C1-23	2	2.5	6	3.7
KFRB-1-120-C1-11	1	1.5	4	2.7
KFRB-1-120-C1-16	1	1.5	4	2.7
KFRB-1-120-C1-23	1	1.5	4	2.7
KFRB-05-120-C1-11	0.5	1.4	3.3	2.7
KFRB-05-120-C1-16	0.5	1.4	3.3	2.7
KFRB-05-120-C1-23	0.5	1.4	3.3	2.7
KFRB-02-120-C1-11	0.2	1	2.5	2.2
KFRB-02-120-C1-16	0.2	1	2.5	2.2
KFRB-02-120-C1-23	0.2	1	2.5	2.2
KFRB-02N-120-C1-11	0.2	0.9	1.6	1.2
KFRB-02N-120-C1-16	0.2	0.9	1.6	1.2
KFRB-02N-120-C1-23	0.2	0.9	1.6	1.2

KFRB 350Ω Uniaxial

10 gages/pkg

Model	Dimensions (mm)
	Gage(Grid)		Base
	Length	Width	Length	Width
KFRB-5-350-C1-11	5	2.4	10	3.7
KFRB-5-350-C1-16	5	2.4	10	3.7
KFRB-5-350-C1-23	5	2.4	10	3.7
KFRB-2-350-C1-11	2	2.4	6	3.7
KFRB-2-350-C1-16	2	2.4	6	3.7
KFRB-2-350-C1-23	2	2.4	6	3.7
KFRB-1-350-C1-11	1	1.5	4	2.7
KFRB-1-350-C1-16	1	1.5	4	2.7
KFRB-1-350-C1-23	1	1.5	4	2.7
KFRB-05-350-C1-11	0.5	1.5	3.5	2.7
KFRB-05-350-C1-16	0.5	1.5	3.5	2.7
KFRB-05-350-C1-23	0.5	1.5	3.5	2.7
KFRB-02-350-C1-11	0.2	1.5	3	2.7
KFRB-02-350-C1-16	0.2	1.5	3	2.7
KFRB-02-350-C1-23	0.2	1.5	3	2.7

KFRB 120Ω Triaxial, 0°/90°/45°

5 gages/pkg

Model	Dimensions (mm)
	Gage(Grid)		Base
	Length	Width	Length	Width
KFRB-1-120-D25-11	1	1.5		φ8
KFRB-1-120-D25-16	1	1.5		φ8
KFRB-1-120-D25-23	1	1.5		φ8
KFRB-05-120-D25-11	0.5	1.4		φ7.5
KFRB-05-120-D25-16	0.5	1.4		φ7.5
KFRB-05-120-D25-23	0.5	1.4		φ7.5

KFRB 350Ω Triaxial, 0°/90°/45°

5 gages/pkg

Model	Dimensions (mm)
	Gage(Grid)		Base
	Length	Width	Length	Width
KFRB-1-350-D25-11	1	1.5		φ8
KFRB-1-350-D25-16	1	1.5		φ8
KFRB-1-350-D25-23	1	1.5		φ8
KFRB-05-350-D25-11	0.5	1.5		φ7.5
KFRB-05-350-D25-16	0.5	1.5		φ7.5
KFRB-05-350-D25-23	0.5	1.5		φ7.5