The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X110-20S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø40mm bore, 110mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X110-20S is a double-acting, single-rod pneumatic cylinder that puts stroke fine-tuning directly on the machine. Its rear-cap adjusting screw provides up to 20 mm of stroke-end reduction, letting you dial in the exact stopping position without swapping the cylinder or adding external hard stops. With a 16 mm piston rod and M12x1.25 rod thread, this model delivers 628 N of push force and 528 N of pull force at 0.5 MPa.
This version includes a built-in magnet (-S suffix), so standard CMSG, DMSG, or EMSG sensors clamp directly onto the tie-rod barrel for reliable end-of-stroke detection. The body length A(SCJ) is 185 mm, and the PT1/4 ports keep plumbing straightforward. Operating pressure spans 0.15–1.0 MPa, with an adjustable air cushion at each end to decelerate the piston smoothly.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X110-20S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 110 mm |
| Stroke adjustment | Up to 20 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. |
| ×110 | Nominal (maximum) stroke length in mm. |
| -20 | 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 stroke end during machine commissioning without removing the cylinder. The 20 mm screw range lets technicians dial in precise actuator travel on the fly.
Adjust the stroke end quickly when a packaging line switches between product sizes. The rear screw eliminates the need for mechanical stop rework during changeovers.
Take up mechanical wear in tooling or grippers by slightly extending the effective stroke. The screw provides a simple field adjustment without disassembling the actuator.
Choose the SCJ40 when you need a compact adjustable-stroke cylinder in the 40 mm bore class. If your force requirement grows, stepping up to the SCJ50 brings 982 N of push at 0.5 MPa. For applications that do not require field-adjustable stroke, the fixed-stroke SC series offers a simpler, slightly shorter body. When replacing an existing SCJ40X110-20S, match the bore, 110 mm nominal stroke, 20 mm adjust range, PT port thread, and the magnet option to ensure identical sensor compatibility and mounting footprint.
Adjustable-stroke checklist
At 0.5 MPa, the cylinder produces 628 N of push force and 528 N of pull force. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 1280 N. The pull force is always lower because the 16 mm rod reduces the effective piston area on the return stroke.
Yes, but only if you need the adjustable-stroke feature. The SCJ40X110-20S has the same bore, nominal stroke, and mounting dimensions as the SC series, but the rear adjusting screw adds length. Ensure your machine has clearance for the screw housing and that the 20 mm stroke reduction range suits your application.
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