The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X250-10 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, 250mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X250-10 is a double-acting, single-rod pneumatic cylinder from AirTAC, engineered with a rear-cap adjusting screw that provides up to 10 mm of fine control over the stroke end position. With a 63 mm bore and a 250 mm nominal stroke, it delivers a substantial push force of 1559 N at 0.5 MPa, scaling up to 2805 N at the maximum operating pressure of 0.9 MPa, making it a robust actuator for mid-range industrial tasks.
This adjustable-stroke model uses a 20 mm diameter piston rod with an M16x1.5 male thread and PT1/4 ports. The integrated air cushion, with a 21 mm cushion length, ensures smooth deceleration. The body length for this SCJ configuration is 197 mm, offering a compact solution where stroke-end tuning is required without swapping the cylinder or adding external hard stops.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X250-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 250 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. |
| ×250 | 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 retract or extend end position by up to 10 mm during machine setup, ensuring perfect alignment with mating parts without mechanical shims.
On a high-cycle packaging line, the adjusting screw can be used to take up mechanical play in linkages or grippers over time, maintaining consistent placement accuracy.
Quickly adjust the stroke end for different product sizes on a single machine, eliminating the downtime associated with physically changing the cylinder or hard stops.
Select the SCJ63X250-10 when your application requires a 250 mm stroke with the ability to precisely dial back the end position by up to 10 mm during commissioning or format changes. If the force is insufficient, stepping up to the 80 mm bore provides 2513 N of push force at 0.5 MPa. For applications needing a fixed, non-adjustable stroke, the standard SC63X250 is a direct alternative. A genuine replacement must match the 63 mm bore, 250 mm nominal stroke, 10 mm adjust range, and PT port thread. For this 250 mm stroke, ensure the load is guided to prevent excessive side-loading and rod bending, or consider an external guide rail.
Adjustable-stroke checklist
The push force is 1559 N at 0.5 MPa and 2805 N at 0.9 MPa. The pull force is lower due to the single rod's area, providing 1402 N at 0.5 MPa. The 10 mm stroke adjuster does not alter these force values.
Yes, the SCJ63X250-10 is a direct dimensional replacement for an SC63X250, with the added benefit of a 10 mm rear stroke adjustment. Ensure the mounting (basic in this case), port thread (PT), and magnet options match your existing setup.
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