The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X20-10 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. Ø80mm bore, 20mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X20-10 is an 80 mm bore, double-acting, single-rod pneumatic cylinder with a field-adjustable stroke. A rear-cap adjusting screw allows the stroke end position to be shortened by up to 10 mm, enabling fine-tuning on the machine without swapping the cylinder. It delivers a push force of 2513 N at 0.5 MPa and features a 25 mm diameter piston rod with PT3/8 ports.
This tie-rod cylinder is designed for applications where the final stroke length must be dialed in during commissioning or format changes. The adjustable cushion decelerates the piston smoothly, and the body length A(SCJ) is 239 mm, making it a compact solution for integrating a variable end-stop into automated equipment. It operates on filtered air from 0.15 to 1.0 MPa.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X20-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 20 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. |
| ×20 | 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.
Dial in the exact stopping position of a stop gate or pusher during initial machine setup without needing shims or custom spacers.
Fine-tune the extension of a diverter arm on a conveyor line to handle different package widths, using the 10 mm adjust range for quick changeover.
Adjust the stroke end to compensate for wear on a contact tip or tooling pad, maintaining consistent part contact without replacing the actuator.
Choose the SCJ80X20-10 when you need to precisely set a short, repeatable stroke end within a 10 mm window. If the force is insufficient, stepping up to a 100 mm bore provides 3927 N of push force at the same pressure. For applications requiring a fixed, non-adjustable stroke, the standard SC80 series is a more economical choice. This model is a direct replacement for any AirTAC SCJ80X20-10 cylinder with PT ports, basic mounting, and no magnet. For strokes of 300 mm or more, evaluate side-loading on the 25 mm rod and consider an external guide or a guided cylinder to prevent bending.
Adjustable-stroke checklist
At the standard operating pressure of 0.5 MPa, the push force is 2513 N and the pull force is 2268 N. The maximum push force at 0.9 MPa is 4523 N. The pull force is lower due to the area of the 25 mm piston rod.
A screw on the rear cap mechanically limits the piston's retraction stroke. By turning the screw, you can shorten the stroke end by up to 10 mm from the nominal 20 mm maximum. This adjusts the physical stopping position and does not control air pressure or speed.
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