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What is a S-type Load Cell
An S-Type load cell (sometimes called an S-beam load cell) is a force sensor designed to measure both tension and compression.
Its S-shaped body deforms slightly when force is applied making the internal strain gauges detect that deformation and convert it into an electrical signal, which can be sent to an indicator, PLC, or other control system.
Because it can measure both pulling and pushing force, is one of the most versatile load cell options for industrial weighing.
How to Use S-Type Load Cells
A S-Type load cell needs to be installed directly in the load path so force travels straight through the sensor.
One end connects to the structure. The other connects to the load or mechanical assembly. For accurate performance, force should be applied axially, without side load, bending, or twisting.
For best results, installation should always include:
- proper alignment;
- correct thread engagement;
- stable connection points;
- suitable mounting hardware;
- protection from shock, vibration, and side load.
Where are S-beam load cells commonly used?
A S-beam load cell is often used in applications such as:
- weighing suspended tanks or hoppers;
- measuring pulling force in test benches;
- monitoring compression force in machinery;
- installing a force sensor in OEM assemblies;
- measuring load in bagging and filling equipment;
- adding accurate force measurement to process systems.
Which Industries Use It
Because of their versatility, S-Type load cells are used across many industries that need reliable force measurement and compact installation.
OEM Equipment: Widely used in OEM machinery that requires built-in weighing, force monitoring, or feedback control.
Manufacturing: They are commonly installed in test systems, assembly equipment, and process lines.
Agriculture: Typical uses include batching, bagging, hopper weighing, and bulk material handling.
Material Testing: You will find then on break testing, force verification, and mechanical testing systems.
Automation and Process Control: They help monitor applied force, improve consistency, and support reliable process control.
Lifting & Hoisting: Used for inline tension monitoring and suspended load measurement.
When it’s the best option for your application
A S-Type load cell is often the best option when you need:
- both tension and compression measurement;
- a compact inline force sensor;
- threaded mounting points;
- easy mechanical integration;
It is especially effective when the load path is straight and axial.
If the application involves off-center loading, structural flex, or significant side forces, another load cell style may be more suitable.
To check other Massload Load Cell Styles, click here!
What Mounts to Use with an S-Type Load Cell
Without the right mounting hardware, maintain alignment, reduce off-axis forces, and improve measurement accuracy can become a problem.
To avoid that, choose the most common mounting options include:
- rod end bearings for slight angular movement;
- eye bolts for suspended tension applications;
- clevis mounts for pin-connected assemblies;
- threaded rods and couplers for inline installations.
When it comes to some systems, specially inside the OEM applications, custom mounting hardware is the best solution because it helps protect the sensor and maintain a clean axial load path.
To learn more about Massload Load Cell Mounts, click here.
How to Calibrate a S-Type Load Cell?
To calibrate a S-Type load cell, the sensor and connected electronics are checked against known loads so the output matches the actual applied force.
The process typically includes:
- Installing the load cell in its final position or a representative test setup.
- Zeroing the system with no load applied.
- Applying known reference loads in stages.
- Comparing the output to the applied force.
- Adjusting the indicator, amplifier, or controller if needed.
- Repeating loading and unloading to verify repeatability and return to zero.
- Documenting the results for traceability.
To learn more about Massload load cell calibration, click here.
Frequently Asked Questions About S-Type Load Cells
What is a S-Type load cell?
A S-Type load cell is a force sensor designed to measure both tension and compression. It is commonly used in suspended weighing, force testing, and industrial equipment.
Can a S-Type load cell measure both tension and compression?
Yes. One of the main advantages of a S-beam load cell is that it can measure pulling force and pushing force with the same sensor.
What is the difference between a S-Type and a single-point load cell?
A S-Type load cell is designed for inline tension and compression force measurement, while a single-point load cell is usually designed for platform weighing where the load may be applied off center.
How do you mount a S-Type load cell correctly?
A S-Type load cell should be mounted so the load is applied axially through the sensor. Proper alignment and suitable mounting hardware are essential to reduce side loading and maintain accuracy.
What capacity S-Type load cell do I need?
The correct capacity depends on the maximum working load, overload risk, mechanical setup, and required resolution. Choosing the right S-Type load cell capacity is important for both performance and sensor protection.