Airtac SCJ100 Standard Cylinder SCJ100X75-75
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X75-75 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø100mm bore, 75mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke75 mm
- Stroke adjust-75 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X75-75
The SCJ100X75-75 is a double-acting, single-rod pneumatic cylinder that puts 3927 N of push force at 0.5 MPa into a compact, field-adjustable package. Its rear-cap adjusting screw lets you shorten the stroke end by up to 75 mm without removing the cylinder, making it ideal for applications where the final stop position needs to be dialled in during commissioning or changed for different product formats.
With a 100 mm bore, 25 mm piston rod, and PT1/2 ports, this tie-rod cylinder delivers up to 7068 N of thrust at the maximum operating pressure of 0.9 MPa. The 29 mm air cushion at each end decelerates the piston smoothly, and the body length A(SCJ) is 245 mm, providing a robust platform for heavy-duty linear tasks where a fixed-stroke cylinder would require external hard stops.
Airtac SCJ100 Standard Cylinder SCJ100X75-75 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X75-75 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 75 mm |
| Stroke adjustment | Up to 75 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/2 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 29 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SCJ (adjustable-stroke) datasheet. The rear adjusting screw sets the stroke end position; force is the same as the equivalent single-rod SC bore. Confirm against the product label before installation. Thread options: PT (standard) / G.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
SCJ is single-rod, so force matches the equivalent SC bore: push uses the full bore area, pull subtracts the rod area. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
Model Code: Airtac SCJ100 Standard Cylinder SCJ100X75-75
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×75 | Nominal (maximum) stroke length in mm. |
| -75 | Adjustable-stroke range in mm (options 10/20/30/40/50/75/100). |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod, fixed stroke), SCD (double rod), SCT (multi-position). SCJ mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Where the Airtac SCJ100 Standard Cylinder SCJ100X75-75 Is Used
End-Stop Fine Tuning
Dial in the precise push position for pressing or clamping operations. The 75 mm adjustment range allows operators to compensate for variations in workpiece thickness or tooling wear without reprogramming the machine.
Product Format Changeover
Quickly adapt a stopper or diverter cylinder to different box or pallet sizes on a conveyor line. The rear screw adjusts the stroke end in seconds, minimizing downtime during batch changes.
Commissioning & Debugging
During machine build and test, the adjustable stroke lets engineers empirically find the optimal actuator travel. Once set, the locknut secures the position, eliminating the need to stock multiple fixed-stroke cylinders for trials.
Is the Airtac SCJ100 Standard Cylinder SCJ100X75-75 the Right Cylinder?
Step up to the SCJ125 bore if your application demands more than the 3927 N push force this 100 mm bore provides at 0.5 MPa (the SCJ125 delivers 6136 N). For lighter, faster cycles, the SCJ80 bore offers 2513 N of push force. The SCJ is the right choice when you need to fine-tune the stroke end position on the machine; if your stroke length is fixed and never changes, a standard SC fixed-stroke cylinder is a simpler, more cost-effective alternative. A direct replacement must match the 100 mm bore, 75 mm nominal stroke, 75 mm adjust range, PT port thread, and basic mounting configuration.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-75)
- ✓ Required force at your working pressure
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear adjusting screw, then lock it before running.
- check Adjust end cushion screws for smooth stops.
- check Use SCJ mounting accessory (FA / LB / TC / TCM1).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCJ100 Standard Cylinder SCJ100X75-75 FAQ
At the standard 0.5 MPa operating pressure, it generates 3927 N of push force and 3681 N of pull force (the difference is due to the 25 mm piston rod area). The maximum push force at 0.9 MPa is 7068 N.
Yes, provided the bore, port size, and mounting match. The SCJ has the same envelope as an SC of the same bore but includes a rear adjusting screw. Ensure you have clearance for the screw mechanism and that the 75 mm adjustment range covers your stroke variation needs.
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