Or perhaps we should say: our miniature force transducers. That’s because we’re venturing into very small sizes here. With a diameter barely larger than a 5-cent coin and a height of just a few millimeters, the construction of such miniature force transducers requires a particularly high level of manufacturing expertise and knowledge of materials. For example, when welding the seams and when laying and soldering the wiring. This is the only way to ensure that, despite the small size, the measurements yield precise and reliable results.
These small, flat load cells—available either in the form of a ring load cell (donut load cell) or a button load cell—measure static and dynamic forces and are frequently used in joining technology, metal forming, clamping technology, microelectronics, robotics, aerospace, and medical technology—such as in surgical instruments. In short, wherever space is limited but high precision is still required.
Benefits & Specifications at a Glance
- A height of just 6 mm and a diameter of 17 mm for a ring load cell (donut load cell) / MRK Series
- A height of just 10 mm and a diameter of 15 mm for a button load cell / MMD Series
- Ideal for very limited installation spaces
- Fatigue strength for dynamic loads across the entire rated load range (100% amplitude)
- Fully welded design with a stainless steel sensor body
- Operating temperature range: -30…+85 °C
- High IP67 protection rating for harsh environmental conditions
- Easy to use and install
- Output signal: mV/V or 0–10 V / 4–20 mA / CANopen via a built-in cable signal conditioner
- Custom designs and dimensions are available starting at a quantity of 1

