The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X80-10S 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. Ø40mm bore, 80mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X80-10S is a double-acting, single-rod pneumatic cylinder with a rear adjusting screw that provides up to 10 mm of field-adjustable stroke-end reduction. This allows machine builders to fine-tune the end position during commissioning or changeover without replacing the cylinder. With a 16 mm diameter rod and PT1/4 ports, it delivers 628 N of push force at 0.5 MPa.
This model includes a built-in magnet (-S suffix), enabling direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the tie-rod barrel for reliable end-of-stroke detection. The body length A(SCJ) for the 40 mm bore is 185 mm, and the unit operates with filtered air from 0.15 to 1.0 MPa across a temperature range of -20 to +70 °C.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X80-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 80 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. |
| ×80 | 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 setup, the 10 mm adjusting screw allows technicians to precisely dial in the actuator's stop point to match tooling or fixture positions without re-machining mounts.
The adjustable stroke compensates for wear on gate seals or minor alignment shifts over time, maintaining a reliable seal in sorting and diverting stations on packaging lines.
Paired with the built-in magnet and a CMSG sensor, the cylinder confirms the clamp has reached its adjusted end position, providing closed-loop feedback for automated assembly fixtures.
Choose the SCJ40X80-10S when you need a compact 40 mm bore with a moderate 80 mm stroke and the ability to dial in the final stop position within a 10 mm window. If your force requirement is lower, stepping down to a 32 mm bore reduces push force to 402 N at 0.5 MPa; for more power, the 50 mm bore provides 982 N. A fixed-stroke SC cylinder is a simpler, more cost-effective choice if you never need to adjust the stroke end.
For direct replacement, match the bore (40 mm), nominal stroke (80 mm), adjust range (-10), PT port thread, and the built-in magnet (-S). This SCJ uses basic mounting, so no additional brackets are required. If your application involves significant side loads, consider adding an external guide rail or switching to a guided cylinder to protect the rod bearing.
Adjustable-stroke checklist
At the standard operating pressure of 0.5 MPa, the push force is 628 N and the pull force is 528 N. The maximum push force at 0.9 MPa is 1130 N. The rear adjusting screw only changes the stroke end position and does not alter the cylinder's force output.
Yes, the SCJ40X80-10S has the same bore, rod diameter, and port size as an SC40X80, but its body is slightly longer to accommodate the rear adjusting mechanism. Ensure you have the extra clearance for the adjusting screw and that you require the 10 mm adjustable stroke feature.
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