MAGPOWR ISR Tension Sensing Roller

The MAGPOWR ISR series is a dead shaft tension sensing roller supported on both sides that uses tension sensors embedded in the roller to provide a signal proportional to tension in any unwind, rewind or intermediate web processing application.

When installed in place of a standard dead shaft idler roller, the ISR integrated tension sensing roller delivers precise web tension measurement with low temperature drift due to full Wheatstone bridge
construction on each load cell inside the roller.



  • Fast and easy installation
  • Several diameters available between 80 and 152 mm (3.15 to 6 inches)
  • Roller materials in Aluminum, Steel and Stainless Steel
  • Seven load ratings
  • Lengths from 235 to 3000 mm (9.3 to 118.1 inches)
  • Force measurement in positive or negative direction
  • Single bolt mounting on each end
  • Five times overload protection
  • Works with any MAGPOWR tension amplifier or tension control


  • Gage Resistance175 ohms nominal (two 350 ohms full bridges in parallel)
  • Load Cell Excitation10 VDC maximum
  • Output Signal1.05 mV/V, 10.5 mVDC maximum
  • Combined Nonlinearity and Hysteresis0.5% of full scale maximum
  • Temperature Effect on Zero0.02% of rating per °C
  • Overload Stops Engagement105% to 200% of full load rating
  • Operating Temperature-30 to 80˚ C
  • Overload Protection5X full load rating
  • Repeatability0.2% of full scale maximum
  • Load Ratings50, 100, 250, 500, 750, 1000, 2200 Newtons
  • ConstructionStainless steel center shaft, aluminum, steel and stainless steel roller body
  • Roller Diameters80, 89, 102, 127 and 152 mm
  • Deflection at Full Load0.15 mm to 0.17 mm
  • Climate Class3K3 (EN60721)
  • Certifications
  • MAGPOWR Mating Cable
    LCC series with straight connector
    LCCRA series with 90 degree connector