High capacity force cell QJ & RJ
Compression force cell for weighing
Capacity from 5000 kgf to 10 000 kgf
The QJ & RJ high-capacity load cells are industrial force sensors based on strain gauge technology, designed to measure tensile and compressive forces in ranges from 100 daN to 80,000 daN (approximately 100 kg to 800 tons).
Their cylindrical and annular design makes them ideal for use as reaction supports on the rods or bases of hydraulic and pneumatic cylinders—a very common configuration in industrial presses, load testing benches, and instrumented lifting systems.
The two product families differ in shape and load range: QJ load cells (100, 250, 500 daN) are flat, compact load cells, while RJ load cells (1,000 to 80,000 daN) are larger-capacity ring-shaped load cells with a threaded central bore that allows for the passage of a cylinder rod or bolt.
The device connects via a connector using the included 4-meter cable. The IP64 rating ensures protection against water splashes and dust in industrial environments. The permissible overload is 150% of the full scale, and the maximum overload before failure reaches 400%—providing high mechanical robustness for applications in harsh conditions.
Description
Applications of high-capacity load cells
QJ and RJ cells are used in all industrial sectors where high forces need to be measured with precision:
Presses and stamping machines
Real-time measurement of press force for process control, detection of assembly defects, and validation of production parameters. The RJ cell is mounted on the press cylinder rod without any modifications to the machine.
Load and Fatigue Test Bench
Measurement of forces applied to structures, components, or assemblies during mechanical strength, fatigue, or validation tests. The high capacity of the RJs (up to 80,000 daN) makes them suitable for testing heavy structures.
Lifting and Civil Engineering
Measuring lifting loads, checking cable and strap tensions, and verifying anchor forces at construction and civil engineering sites. The central bore in the RJ cells allows for the insertion of an anchor bolt, enabling direct integration into the structure.
Automotive and aerospace industries
Qualification of force-controlled assembly processes, mechanical strength testing of structural components, and validation of bolted joints and seals.
Industrial Maintenance
Verification of tension in critical bolted joints; inspection of tightening torques on pressure equipment.
QJ or RJ: Which cell should you choose?
The choice between QJ and RJ cells depends mainly on the required capacity and the installation configuration:
QJ load cells (100 to 500 daN) are flat, compact load cells, ideal for applications requiring moderate capacity where space is limited. Their 60-mm diameter makes them suitable for small presses and laboratory test benches.
RJ load cells (1,000 to 80,000 daN) are high-capacity ring-type load cells with a threaded central bore. Their design, featuring an external flange for mounting and an internal bore, makes them ideal for use in cylinders, anchor bolts, and tie rods. They meet the needs of heavy-duty industrial presses and structural testing.
In both cases, the sensor connects to the ACRN measurement consoles (XA, XA-m) via the included connector for displaying, storing, and exporting measured values.
Benefits
-
- Industrial Weighing
-
- Intrinsic safety FM certified
-
- All stainless steel, suitable for harsh industrial applications
-
- Interchangeability 0.25% for multiple load cell applications
-
- 5-point traceable NIST calibration
Dimensions
| Capacity | D Diameter | H Height | F | G | K | T | Weight kg (lb) |
| Metric models | |||||||
| 2500 to 5000 kgf | 95 mm | 38 mm | 8 mm | 83 mm | 6,7 mm | M20 x 1,5 mm | 2,3 (5) |
| 7500K to 10000 kgf | 102 mm | 51 mm | 8 mm | 89 mm | 10,3 mm | M24 x 2,0 mm | 3,4 (7,5) |
For use with:
The XA-m measurement console — Recommended console for reading and archiving measurement values from QJ and RJ cells.
The high-precision SEJ force sensor — S-shaped alternative for applications requiring tensile and compressive testing with higher accuracy (0.02% FS).
La cellule de compression miniature FJ — for compression applications only with lower capacities (100 N to 200 kN).
Our Calibration Service — Periodic calibration of QJ and RJ cells in our metrology laboratory.
Information complémentaires
| Excitation | 10 Vcc (15 Vcc max) |
|---|---|
| Output | 3 mV/V ± 0,25% |
| 5 points Calibraion | 0 %, 50 %, 100 %, 50 %, 0% in compression |
| Linearity | 0,10 % of the full scale output |
| Hysteresis | 0,10 % of the full scale output |
| Repetability | 0,05 % of the full scale output |
| Zero balancing | ± 1 % of the full scale output |
| Certification | Intrinsinc safety FM IS/I.II.III/1/CDEFG |
| Safe overload | 150 % of capacity |
| Ultimate overload | 300 % of capacity for models ≤ 400 000 lb; |
| Bridge resistor | 350 ± 10 Ω |
| Full scale deviation | 0,025 à 0,075 mm (0,001 à 0,003") typical value |
| Construction | Stainless steel 17-4 PH |
