The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X180-30S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø63mm bore, 180mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X180-30S is a double-acting, single-rod pneumatic cylinder that integrates a rear-cap adjusting screw, giving you 30 mm of field-adjustable stroke-end control on a 180 mm nominal stroke. At 0.5 MPa, it delivers 1559 N of push force and 1402 N on the pull stroke, driven by a 20 mm piston rod through PT1/4 ports.
A built-in magnet is factory-installed, allowing CMSG/DMSG/EMSG reed or solid-state sensors to be clamped directly onto the tie-rod barrel for reliable end-of-stroke detection. The cylinder body length A(SCJ) is 197 mm, and its 28 mm air cushion decelerates the piston smoothly, making it a versatile actuator for commissioning trials or format changeovers.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X180-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 180 mm |
| Stroke adjustment | Up to 30 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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. |
|---|---|
| 63 | Bore size in mm. |
| ×180 | Nominal (maximum) stroke length in mm. |
| -30 | 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.
The 30 mm rear adjustment screw lets technicians dial in the exact stroke end position during machine setup without swapping cylinders or adding external hard stops, speeding up production line commissioning.
On packaging or sorting conveyors, quickly adjust the pusher stroke for different box sizes. The SCJ63X180-30S adapts to new formats in seconds, minimizing downtime between product runs.
In clamping or pressing fixtures, use the adjustable stroke to take up mechanical wear on tooling or workpieces over time, maintaining consistent contact force without reprogramming the PLC.
Step up to an SCJ80 bore if your application demands more than 1559 N push at 0.5 MPa—the 80 mm bore provides 2513 N. For fixed-stroke applications where field adjustment is unnecessary, the standard SC63 series offers a simpler, cost-effective alternative. If the 180 mm stroke introduces a side-load risk, consider an external guide rail or switch to a guided cylinder.
This model is a direct replacement for another AirTAC SCJ63 adjustable-stroke cylinder with a 180 mm nominal stroke, 30 mm adjust range, PT ports, basic mounting, and a magnet-equipped barrel. Always match the bore, nominal stroke, adjust range, and port thread to ensure drop-in compatibility.
Adjustable-stroke checklist
At 0.5 MPa, the cylinder provides 1559 N of push force and 1402 N of pull force. The maximum operating push force at 0.9 MPa is 2805 N. Because it is a single-rod cylinder, the push force is always greater than the pull force due to the rod area on the piston.
Yes, if your existing cylinder is an AirTAC SCJ63 with a 180 mm nominal stroke, a 30 mm adjustable range, PT ports, and a magnet-equipped barrel. The SCJ series is a tie-rod design, so it is not dimensionally interchangeable with ISO 15552 cylinders.
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