The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X35-10 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, 35mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X35-10 is a double-acting, single-rod pneumatic cylinder that puts fine stroke control at the rear cap. Its 10 mm adjusting screw lets you dial in the exact stroke end position without swapping the cylinder or adding external hard stops, making it ideal for commissioning trials and format changeovers. With a 63 mm bore and 20 mm piston rod, it delivers 1559 N of push force at 0.5 MPa and up to 2805 N at the 0.9 MPa maximum operating pressure.
This model has a nominal 35 mm stroke and uses a PT1/4 port. The built-in adjustable air cushion provides smooth deceleration over a 28 mm length, protecting the end cap from impact. The body length A(SCJ) is 197 mm, slightly longer than a fixed-stroke SC of the same bore to house the adjustment mechanism. Standard TPU seals handle temperatures from -20 to +70 °C.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X35-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 35 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. |
| ×35 | 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.
A 10 mm adjustment range lets technicians fine-tune the clamp or press stroke on an assembly station during pilot runs, dialing in the exact position for consistent part fit without reprogramming the PLC.
As welding electrodes erode and shorten, the rear screw can be advanced to compensate, maintaining the correct squeeze stroke and electrode force without replacing the cylinder or adding shims.
When switching between product sizes on a packaging line, the adjustable stroke lets operators quickly change how far a diverter gate extends, reducing changeover time compared to swapping fixed-stroke cylinders.
Choose the SCJ63 bore when your application needs roughly 1560 N of push force at standard shop air. If you need more force, the SCJ80 bore provides 2513 N push at 0.5 MPa; for a lighter, more compact solution, the SCJ50 delivers 982 N. This adjustable-stroke model is the right pick when you foresee needing to tweak the end position on the machine—during setup, after maintenance, or to take up wear on tooling. If your stroke is fixed and never changes, a standard SC63 fixed-stroke cylinder is a simpler, more economical alternative.
For a direct replacement, match the 63 mm bore, 35 mm nominal stroke, 10 mm adjust range, and PT port thread. This basic model has no magnet or mounting bracket; order the same configuration or add an -S magnet and an FA, LB, or TC mount if your existing setup uses them. The SCJ does not accept FB flange or CA/CB clevis mounts.
Adjustable-stroke checklist
Because it is a single-rod cylinder, push and pull forces differ. At 0.5 MPa, push force is 1559 N and pull force is 1402 N (the rod area reduces the piston area on the return stroke). At the maximum operating pressure of 0.9 MPa, push force reaches 2805 N. The theoretical maximum at 1.0 MPa is 318 kgf.
Yes, if the bore (63 mm), nominal stroke (35 mm), and adjust range (10 mm) match. Also confirm your port thread is PT, and check whether your existing cylinder has a magnet (-S suffix) or a mounting bracket (FA, LB, or TC). The SCJ mounting system uses the F-SC63 series accessories; it is not compatible with FB flange or CA/CB clevis mounts.
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