The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X120-10S 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. Ø80mm bore, 120mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X120-10S is an 80 mm bore double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, allowing you to fine-tune the piston's stopping position by up to 10 mm without replacing the unit. This model includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, providing reliable end-of-stroke detection. With a 25 mm diameter piston rod and PT3/8 ports, it delivers a push force of 2513 N at 0.5 MPa, making it a strong performer for mid-range industrial tasks.
Its rear-cap adjusting screw sets the stroke end within the 10 mm range, which is ideal for commissioning tweaks, wear take-up, or small format changes on a machine. The cylinder body length (A dimension) is 239 mm, and it features an adjustable air cushion to decelerate the piston smoothly at the end of travel. This genuine AirTAC SCJ unit is a reliable choice when you need a robust, sensor-ready actuator with on-the-fly stroke adjustment.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X120-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 120 mm |
| Stroke adjustment | Up to 10 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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. |
|---|---|
| 80 | Bore size in mm. |
| ×120 | 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.
Fine-tune the end-of-stroke position during initial machine setup to perfectly align the actuator with tooling or stops, eliminating the need for shims or custom spacers.
On a high-cycle packaging line, use the 10 mm adjustment to compensate for gradual wear on gripper pads or sealing bars, maintaining consistent performance without immediate part replacement.
The built-in magnet allows CMSG sensors to confirm the adjusted stroke position, providing a closed-loop signal for a sorting gate that needs precise, repeatable positioning.
Choose this SCJ80 model when your application requires roughly 2500 N of push force and the ability to adjust the stroke end by a small, precise amount. If you need more force, stepping up to the 100 mm bore provides 3927 N of push at the same 0.5 MPa pressure. If your application does not require stroke adjustability, a fixed-stroke SC80 cylinder is a simpler and more economical alternative. For direct replacement, match an SCJ cylinder with an 80 mm bore, 120 mm nominal stroke, a 10 mm adjustment range, PT3/8 ports, and a built-in magnet.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N. The maximum push force at the 0.9 MPa operating limit is 4523 N. The pull force is lower because the rod reduces the effective piston area on the return stroke.
A screw in the rear cap acts as an internal, adjustable end-stop for the piston. By turning the screw, you can shorten the stroke end by up to 10 mm from the nominal 120 mm stroke. This adjusts the stopping position only and does not change the cylinder's force or speed.
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