Availability
Availability is confirmed with the quotation.
Through-Shaft Tension Sensor
LF100A Through-Shaft Tension Sensor
LF100A is a live-shaft flange tension sensor with built-in self-aligning ball bearings. It helps compensate for shaft installation errors and provides stable web tension feedback for converting and web handling equipment.
Key Features
Live-shaft flange tension sensing with self-aligning bearing support.
- Selectable output signals such as 0–5 V, 0–10 V or 4–20 mA.
- Compatible with automatic tension controllers and signal amplifiers.
- Live-shaft flange structure with built-in self-aligning bearings.
- Four-bolt flange mounting for machine side-frame installation.
- Helps compensate for shaft installation errors and maintain stable measurement.
| Model Series | LF100A |
|---|---|
| Product Type | Live-shaft flange tension sensor |
| Power Supply | DC 10 V |
| Accuracy Class | 0.5% |
| Repeatability Error | ±0.25% FS |
| Combined Non-Linearity and Hysteresis Error | ±0.5% FS |
| Standard Temperature | 0–50°C |
| Maximum Overload | 500% |
| Protection Rating | IP66 |
| Model | Range (kg) | Bearing Size | Bearing Model |
|---|---|---|---|
| LF100A-005-17S | 5 kg | 40 × 17 | 1203 |
| LF100A-015-17S | 15 kg | 40 × 17 | 1203 |
| LF100A-025-17S | 25 kg | 40 × 17 | 1203 |
| LF100A-050-17S | 50 kg | 40 × 17 | 1203 |
| LF100A-100-17S | 100 kg | 40 × 17 | 1203 |
The listed load value applies to one sensor. When two sensors are used as a pair, the applicable load value is doubled. The “S” model indicates the cable outlet direction.
Dimensions
Mounting drawing
Replacement & Spare Part
Replacing an LF100A on your machine?
Replacing a load cell from another manufacturer? If the rated load, shaft diameter and mounting dimensions match, one of these can replace it. Send the old sensor’s label and mounting dimensions and we will check the fit.
What to match
Confirm the rated load of each sensor: the listed rating is for one sensor, and a pair has twice that rated load. Check the 1203 bearing (40 × 17). The S suffix identifies the cable outlet direction: with the resultant force at 6 o’clock, the cable outlet is at 12 o’clock.
What to send us
Send a photo of the sensor label, a photo showing how it is mounted, and the model of the connected controller or signal amplifier. Include the old sensor’s mounting dimensions so we can check the fit.
Measurement checks for LF100A installations
Use these checks to review the sensor installation and measurement setup.
Reading is about half of what you expect
On a machine using a pair of sensors, check that both are connected and their signals are summed. Each sensor carries only its share of the roller load.
Zero shifts after a roller or bearing replacement
With the roller fitted and no web, re-zero the system, then calibrate with a known weight. Replacing the roller changes the dead load seen by the sensors.
Reading jumps or reaches full scale
Check the cable and connector first. Then check for overload from a web break or hard stop, comparing the load the roller saw with the 500% maximum overload listed above.
Rated load is per sensor — a pair reads double
Choose LF100A when a live-shaft flange tension sensor is required and the roller installation needs self-aligning bearing support.
| Good Fit | Live-shaft roller structures, flange-mounted installations and applications where shaft alignment compensation is useful. |
|---|---|
| Check First | Confirm shaft diameter, bearing arrangement, rated load, mounting space, output signal and side-frame structure before selection. |
| System Match | Use with compatible tension amplifiers, indicators, transmitters or automatic tension controllers according to the required output signal and control architecture. |
Live-shaft feedback for flange-mounted rollers
Live-Shaft Roller Installations
Tension feedback for rollers using live-shaft mounting structures.
Printing & Converting Lines
Stable web tension measurement in printing, laminating, coating and converting processes.
Unwind / Rewind Tension Feedback
Tension monitoring for unwind and rewind sections where flange mounting is suitable.
Machine Retrofit Projects
Useful when upgrading existing equipment with flange-mounted tension sensing.
Controllers and amplifiers for LF100A feedback
TC100 Automatic Tension Controller
Automatic controller for constant, taper and speed-synchronous tension control on unwind, process and rewind sections.
View ModelSAMP03 Signal Amplifier
Signal amplifier for tension sensors, converting sensor feedback into standard output signals for PLCs, computers or tension controllers.
View ModelLC100A Pedestal-Mount Tension Sensor
Compact pedestal-mount tension sensor with low temperature drift, high stability and good linearity.
View ModelLS100A Through-Shaft Tension Sensor
Stainless-steel through-shaft tension sensor with IP66 protection for harsh converting environments.
View ModelLFP100A Through-Shaft Tension Sensor
Compact flange tension sensor with self-aligning bearings for easy roller installation and maintenance.
View ModelLX100A Cantilever Tension Sensor
Cantilever tension sensor for stable tension detection with reduced sensitivity to web position changes on the roller.
View ModelNew to tension control? See what web tension control is and how it works for how this component fits into the control loop.