MAGATOM / MICRO-FORCE SENSINGCompression sensing. Millimetre scale.
Application engineering

Button Load Cells for Switch Force–Travel Testing

Capture an interpretable actuation curve by coordinating the force sensor, displacement channel, contact geometry and sampling clock.

Request a configuration review ↗
Series selection envelope — exact dimensions and capacity combinations require the model drawing.
Outer diameter (OD)Height (H)Series / fitButton radiusCapacity (N / kgf / lbf)
Ø6 / Ø8 / Ø9.5 mm2.8–4 mmMT-BLC-SUB ↗Robotics fingertips & miniature instrumentsSpherical; drawing-specific1 N / 0.102 kgf / 0.225 lbfto 250 N / 25.493 kgf / 56.202 lbf
Drawing-specificDrawing-specificMT-BLC-THD ↗Switch, stop & ejector-pin testingSpherical; drawing-specific10 N / 1.02 kgf / 2.248 lbfto 5,000 N / 509.858 kgf / 1,124.045 lbf
Sensor selected separatelyModule-specificMT-AMP-KIT ↗Laboratory acquisition & PLC integrationSensor-specificMatched to selected sensor
01

Define the curve, not just the peak

State approach speed, travel limits, contact-tip shape, actuation peak, return force and release point. A force-versus-time trace becomes a force-versus-travel curve only when displacement is measured or motion is independently established.

  • Include fixture preload and the return stroke.
  • Use the same displacement reference for repeated tests.
  • Choose capacity around peak force and credible setup impact.
02

Control alignment through the stroke

A threaded retention feature locates the sensor body; it does not authorise side loading. Guide the actuator so the contact stays on the convex button. Check the mounting torque and engagement from the released drawing.

  • MT-BLC-THD is a candidate for threaded retention.
  • MT-BLC-SUB is a candidate where stack height dominates.
  • Use a mechanical stop to prevent a jammed switch from overloading the sensor.
03

Agree rate, filtering and synchronisation

Specify the fastest feature on the curve and the acceptable amplitude or timing error. Select sensor dynamics, acquisition bandwidth and filter delay together. A high nominal sensor natural frequency alone does not establish system response.

  • Request natural frequency and deflection for the exact force range.
  • Compare repeats with an agreed fixture and motion profile.
  • Record amplifier settings with every acceptance curve.
Application & release review

Design around the actual measurement.

Explore the matching sensor series.

MT-BLC-SUB01
Subminiature silver cylinder flat center contact left metal sleeve cable.
Supplier-source form reference · XJC-Y01-6.5 · confirm MT drawing

Subminiature load buttons

Robotics fingertips & miniature instruments

Diameter
Ø6 / Ø8 / Ø9.5 mm
Capacity
1–250 N
MT-BLC-THD02
Stepped cylindrical housing small raised front button black upper left cable.
Supplier-source form reference · LFC-10A · confirm MT drawing

Threaded button load cells

Switch, stop & ejector-pin testing

Diameter
Drawing-specific
Capacity
10–5,000 N
MT-AMP-KIT03
Teal and gray narrow handheld force readout; one top metal connector, rectangular screen with blue interface blocks, circular directional keys and blue center, three lower keys with red power key..
Supplier-source form reference · SBT970 · confirm MT drawing

Readouts & USB kits

Laboratory acquisition & PLC integration

Diameter
Sensor selected separately
Capacity
Paired to sensor
Before you freeze the drawing

Five questions about
compression measurement.

Need an application-specific answer?
Talk through your force path ↗

How do I choose a button load cell capacity?

Include preload, normal compression peaks and credible overloads. Select a range that resolves the minimum force of interest while leaving mechanical margin, and add a fixture overload stop.

Are kg, kgf and N interchangeable?

Kilograms describe mass. Use kgf when expressing force: 1 kgf = 9.80665 N. The tables show N, kgf and lbf together; dimensions and ratings remain model-specific.

Can you supply a drop-in replacement?

Send the complete original model, drawing revision, capacity and electronics details. We review mechanical and electrical interfaces and agree a sample correlation test before compatibility is confirmed.

Does a high-temperature cable upgrade change the sensor rating?

No. Cable, sensor body and amplifier ratings are separate. Request a +150°C or +200°C sensing configuration with the actual thermal conditions and agreed zero/span limits.

Can a load button connect directly to a PLC?

A bare mV/V bridge normally needs a compatible conditioner. Specify an MT-AMP-KIT with 0–10V, 4–20mA or an agreed RS485 interface, plus system calibration and force mapping.

From envelope to measurement

A few millimetres.
A better force measurement.

Send OD × height, peak force and output. We’ll start with the fit.

Request a quote / sample