The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X225-10S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø63mm bore, 225mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X225-10S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, letting you fine-tune the 225 mm nominal stroke by up to 10 mm without swapping the unit. Its 63 mm bore delivers 1559 N of push force at 0.5 MPa, and the built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors for reliable end-of-stroke detection.
The rear-cap adjusting screw sets the retract end position precisely, making this cylinder ideal for commissioning trials and format changeovers. It features a 20 mm piston rod, PT1/4 ports, and a 28 mm air cushion for smooth deceleration. The body length A(SCJ) is 197 mm, and the operating pressure spans 0.15–1.0 MPa.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X225-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 225 mm |
| Stroke adjustment | Up to 10 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. |
| ×225 | Nominal (maximum) stroke length in mm. |
| -10 | 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.
Fine-tune the end-stop position during machine setup with the 10 mm adjusting screw, achieving perfect alignment without fabricating custom mechanical stops.
Quickly adjust the stroke end for different product sizes on packaging or assembly lines. The built-in magnet provides sensor feedback to confirm the new position.
Take up mechanical play in clamping or pressing fixtures over time by dialing the stroke end forward, maintaining consistent force application without replacing tooling.
Step up to an 80 mm bore (2513 N push at 0.5 MPa) if your load exceeds this cylinder's 1559 N push force; step down to a 50 mm bore (982 N push) for lighter, more compact applications. If your stroke length never needs field adjustment, a fixed-stroke SC63X225 is a simpler, cost-effective alternative. For exact replacement, match the 63 mm bore, 225 mm nominal stroke, 10 mm adjust range, PT port thread, basic mounting, and the -S magnet option.
At 225 mm of stroke, the rod is still well-supported, but if your application introduces significant side loads, consider adding an external guide rail or switching to a guided cylinder to protect the rod bearing and piston seals from premature wear.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 2805 N. The pull force is lower because the piston rod reduces the effective area on the return stroke.
Yes, if you need the ability to adjust the stroke end. The SCJ shares the same mounting footprint (body length A is 197 mm) and port size (PT1/4) as the SC63. Ensure you match the 225 mm nominal stroke and order the -S magnet option if your existing setup uses sensors.
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