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Strain Gauge

For over 70 years, the Sensing Devices Division of MinebeaMitsumi has been manufacturing high quality measurement components utilizing bonded resistance strain gauge technology. These strain gages are tailored for force, torque, pressure and displacement measurements within industrial, medical, aerospace and consumer industries. Applications range from medical devices, smart phones, commercial scales, tank and vessel weighing, web-tension and bathroom scales.

Features

  • High sensitivity
  • Small footprint
  • Wide operating temperature range
  • Low power consumption
  • Customization and integration support

Applications

  • Smart phones & mobile devices
  • PC
  • Gaming
  • Robotics
  • Medical devices
  • Automotive

About our Strain Gauge Technology

Strain gauges consist of a very thin metallic foil etched in a grid pattern, which is bonded to a device and used to measure the strain when load or pressure is applied. The resulting electrical output is proportional to the strain. Construction of a precise sensing system requires careful selection of gauge material, bonding adhesive, protective coating(s) and lead wires. NMB has a dedicated team of design and application engineers to develop a solution to meet individual customer specifications.

strain gauge technology

NEW Strain Technology Developed by MinebeaMitsumi

In 2017, MinebeaMitsumi succeeded in developing the Minege product, a new ultra-high sensitivity strain gauge film that demonstrates higher sensitivity (>5X) than conventional materials with a reduced footprint (1/10th). This new film alleviates previous design limitations that restricted the material of the elastic body to which the strain gauge is affixed. In contrast to conventional strain gauges, the Minege material enables new applications with multiple switching functions to support touch force sensitivity in multiple stages. Anticipated applications in the future include human-like touch feedback for robotics and innovative interface solutions for the automotive industry.

ultra-high sensitivity strain gauge graph
strain gauge film

 

SeriesJJ-WFF-W
NamePolyimide foil strain gageStrain gage with vynil wireEpoxy foil strain gageStrain gage with vynil wire
Resistive elementCuNi foilCuNi foilCuNi foilCuNi foil
Base materialPolyimidePolyimideSpecial epoxySpecial epoxy
Operating temp. range (℃)-70 ~ 200-30 ~ 70-50 ~ 70-30 ~ 70
Strain limit (%)3 mm or more
5 ~ 7
less than 3 mm
2 ~ 4
3 mm or more
5 ~ 7
less than 3 mm
2 ~ 4
3 mm or more
4
less than 3 mm
2
3 mm or more
4
less than 3 mm
2
Fatigue
limit
Applied strain

(x10-6)

±1 500±1 500±1 500±1 500
Repeatable times107107106106
Operating temperature range of strain gage with adhesives (℃)CN-4
-50 ~ 100
SP-4
-30 ~ 200
CN-4
-50 ~ 70
CN-4
-50 ~ 70
CN-4
-50 ~ 70

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