The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X40-10 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, 40mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X40-10 is a double-acting, single-rod pneumatic cylinder from AirTAC's adjustable-stroke family, built around a 63 mm bore and a 20 mm piston rod. Its rear-cap adjusting screw provides up to 10 mm of stroke-end reduction, allowing you to fine-tune the stopping position in the field without replacing the cylinder or adding external hard stops. The body length A is 197 mm, and the integrated air cushion is 28 mm long to decelerate the piston smoothly.
At 0.5 MPa, this cylinder delivers 1559 N of push force and 1402 N on the pull stroke, making it a capable mid-range actuator for positioning tasks. The PT1/4 ports and M16x1.5 rod thread are standard, and the unit is rated for 0.15-1.0 MPa operation with a 1.5 MPa proof pressure. It's a genuine AirTAC component, ready for integration into your adjustable-end-stop application.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X40-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 40 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. |
| ×40 | 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.
Dial in the exact stopping point of a clamp or stop gate during initial machine setup by adjusting the rear screw, eliminating the need to shim or reposition the cylinder body.
On a high-cycle diverting arm, use the 10 mm adjustment to take up mechanical play or seal wear over time, maintaining consistent product handling without downtime for part changes.
Quickly adapt a pressing or staking station for a slightly different part thickness by turning the stroke-end screw, avoiding the need to swap out the entire actuator.
Choose the SCJ63X40-10 when you need a stroke that can be dialed back by up to 10 mm during commissioning or changeover. If you require more force, the 80 mm bore steps up to 2513 N push at 0.5 MPa; for a lighter, more compact solution, the 50 mm bore provides 982 N. This adjustable-stroke model is ideal when the end position needs tuning, but if your application demands a fixed, repeatable stroke every cycle, the standard SC63X40 fixed-stroke cylinder is a simpler, more cost-effective alternative. For a direct replacement, match the 63 mm bore, 40 mm nominal stroke, 10 mm adjust range, PT ports, and basic mounting.
Adjustable-stroke checklist
The push force is 1559 N at 0.5 MPa and 2805 N at the maximum operating pressure of 0.9 MPa. The pull force is slightly lower at 1402 N at 0.5 MPa due to the area of the 20 mm piston rod. These forces are identical to the fixed-stroke SC63 cylinder.
To ensure a drop-in fit, match the 63 mm bore, 40 mm nominal stroke, and the 10 mm adjustment range. Also verify the port thread is PT (Rc1/4), the mounting style is basic (no brackets), and that no magnet is required. The SCJ series uses the same mounting accessories as the SC family, such as FA, LB, or TC trunnion kits.
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