The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X35-10 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. Ø40mm bore, 35mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X35-10 is a double-acting, single-rod pneumatic cylinder that puts fine stroke control directly into the rear cap. With a 40 mm bore and a 16 mm piston rod, it delivers 628 N of push force at 0.5 MPa, yet the standout feature is the 10 mm adjusting screw—it lets you dial in the exact stroke end position without removing the cylinder from the machine.
Built on a proven tie-rod platform, this model shares the same 21 mm air cushion and PT1/4 port as the fixed-stroke SC series, but adds a field-adjustable stop. The body length A(SCJ) is 185 mm, making it a compact choice for applications where a small tweak to the end-of-travel position eliminates the need for external hard stops.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X35-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 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 | M12×1.25 |
| 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, 21 mm |
| Max stroke | Up to 1200 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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. |
|---|---|
| 40 | 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.
During machine bring-up, the 10 mm rear screw lets technicians precisely set the retract stop for a sensor flag or gripper jaw, eliminating the need to shim or reposition the entire cylinder.
On a small packaging line, operators can quickly adjust the stroke end to accommodate a slightly taller box or tray, reducing downtime between batches without swapping the actuator.
In a clamping or pressing station, the adjustable stroke takes up mechanical wear in tooling or seals over time, maintaining consistent contact pressure without reprogramming the PLC.
Choose the SCJ40X35-10 when your process needs a 35 mm maximum stroke that can be shortened by up to 10 mm during setup or changeover. If you require more force, stepping up to the 50 mm bore provides 982 N of push at 0.5 MPa; for a lighter, more compact footprint, the 32 mm bore offers 402 N. For applications where the stroke must never be adjusted in the field, the fixed-stroke SC40 series is a simpler, cost-effective alternative.
To guarantee a drop-in replacement, match the 40 mm bore, 35 mm nominal stroke, 10 mm adjustment range, PT port thread, and basic mounting style. The SCJ mounting system accepts FA front flange, LB foot, or TC centre trunnion kits (e.g., F-SC40TC), but this basic model ships without brackets, ready for your custom fixture.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 628 N and the pull force is 528 N (the difference is due to the 16 mm single rod). At the maximum operating pressure of 0.9 MPa, the push force reaches 1130 N. The rear adjusting screw does not alter the cylinder's force output.
Yes, if you need the 10 mm adjustable stroke feature. The SCJ40X35-10 shares the same 40 mm bore, PT1/4 ports, and mounting accessories as the SC series. Ensure the slightly longer body length (185 mm) fits your space and that the 35 mm nominal stroke with 10 mm adjustment matches your motion requirement.
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