3-Roller Wire & Web Tension Transducers
A three-roller force transducer routes a wire or narrow web around a sensing roller between two guide rollers. The defined path creates a repeatable deflection angle for inline tension measurement.
10–1,000 N
Roll face width 50–300 mm
Wire & cable · textile yarn · narrow tape & strip
Bearing-supported guide rollers; groove, roller surface and wrap geometry selected for the material
Configure & request quote ↗Shaft bore, footprint and nominal force matrix
These are requested design ranges, subject to an approved capacity-specific drawing and quotation. 1 lbf = 4.44822 N. Bearing IDs are distinct from sensor outside dimensions.
| Journal Shaft Bore ID (mm / inch) | Flange OD / Base Footprint (mm) | Nominal Force Capacity (N / lbf) | Max Overload Limit (500% FS target) | Included Bearing Type (Self-Aligning where specified) |
|---|---|---|---|---|
| Roller bearing ID by assembly drawing | Face width 50–150 mm | 10–250 N assembly target2.25 / 56.20 lbf | Model-specific; roller loads differ | Low-drag roller bearings, specified per build |
| Roller bearing ID by assembly drawing | Face width 150–300 mm | 250–1,000 N assembly target56.20 / 224.81 lbf | Model-specific; roller loads differ | Surface / bearing arrangement by material |
A 500–1,000% FS mechanical-stop target is configuration-dependent. It does not guarantee survival under every emergency-stop impulse, transverse force or bending moment. Request verified limits for the proposed build.
Three checks before the drawing is released
- Specify wire diameter or web width and the minimum allowable bend radius.
- Provide roller face width, groove profile, line speed and tension range.
- Review routing drag and surface marking before selecting a roller material.
17-4PH stainless steel or hard-anodized aluminum, ±0.1–0.25% FS combined-error targets and bearing alignment allowance are selected and verified per configuration. NSK / SKF sourcing and any ±1.5° accommodation must be confirmed against the exact bearing designation.
Before the first roller turns
Does A+B equal web tension?
A+B is summed calibrated support force. Conversion to web tension requires the wrap-angle gain, sensing-axis projection and tare correction. Confirm channel calibration before using the signal for closed-loop control.
Is a factory-matched pair always required?
A two-ended sensing roller normally uses one sensor at each end. A single-ended cantilever or complete 3-roller assembly may need only one sensing station. Choose the package to match the actual machine.
Can I order metric or inch bearing bores?
Request the actual journal diameter and tolerance. Metric and inch options are reviewed with the bearing fit, speed, alignment and load requirement; special bores need an agreed drawing.
What arrives with the proposed configuration?
Ask for the assembly drawing, nominal capacity, individual channel sensitivity and polarity, bearing designation, connector pinout and the calibration scope. Final price, dispatch date and freight are confirmed in the quotation.
Build your roller-end sensing package.
Send your shaft, load and machine details. We review the mounting envelope, sensing direction and PLC interface before quoting.