The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X180-75 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. Ø80mm bore, 180mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X180-75 delivers a nominal 180 mm stroke with a 75 mm rear-cap adjusting screw, letting you fine-tune the stroke end on the fly without swapping the cylinder. At 0.5 MPa it generates 2513 N of push force and 2268 N on the pull stroke, placing it in the mid-range power class for pressing, clamping, and format-change tasks.
This double-acting single-rod cylinder uses a 25 mm diameter piston rod with an M20x1.5 male thread and PT3/8 ports. The built-in variable air cushion (28 mm length) decelerates the piston smoothly, and the body length A(SCJ) is 239 mm, making it compact enough for guarded stations where end-stop adjustment is needed during commissioning.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X180-75 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 180 mm |
| Stroke adjustment | Up to 75 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT3/8 |
| 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, 28 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.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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.
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×180 | 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.
Adjust the end stop in seconds when a packaging line switches between box heights, eliminating manual stop repositioning.
Fine-tune the actuator stroke during machine setup to dial in the exact travel needed for a new fixture or tool.
Compensate for gradual wear on contact tooling by slightly extending the stroke end, maintaining consistent part engagement.
Step up to the 100 mm bore if your application needs more than 2513 N of push force at 0.5 MPa—the SCJ100 delivers 3927 N. For lighter tasks, the 63 mm bore provides 1559 N. If your stroke never changes, a fixed-stroke SC80X180 cuts cost and complexity. The adjustable screw only sets the stroke end; it does not lock the piston, so if the load must hold position without live air pressure, add an external rod brake or pilot-operated check valve. For a direct replacement, match the 80 mm bore, 180 mm nominal stroke, 75 mm adjust range, PT3/8 ports, and basic mounting.
Adjustable-stroke checklist
At 0.5 MPa, it pushes with 2513 N and pulls with 2268 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 4523 N. The pull force is lower because the rod reduces the effective piston area on the return stroke.
Yes, if you need field adjustability. The SCJ80X180-75 shares the same bore, rod, and port size as the SC80, but the rear cap includes a 75 mm adjusting screw. Ensure your mounting arrangement can accommodate the slightly longer body length A(SCJ) of 239 mm.
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