The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X25-10 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, 25mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X25-10 is an 80 mm bore, double-acting single-rod cylinder that puts 2513 N of push force at 0.5 MPa into a compact 25 mm nominal stroke. Its defining feature is the rear-cap adjusting screw, which lets you shorten the stroke end by up to 10 mm without removing the cylinder—ideal for dialling in precise end positions during commissioning or after tooling wear.
This model uses a 25 mm diameter piston rod and PT3/8 ports, with a body length A(SCJ) of 239 mm. The adjustable air cushion decelerates the piston smoothly, and the tie-rod construction keeps field maintenance straightforward.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X25-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 25 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. |
| ×25 | 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.
The 10 mm rear adjuster lets operators tweak the retract end position in seconds, compensating for seal wear or small fixture shifts without stopping the line for a cylinder swap.
With 2513 N of push force at 0.5 MPa, this 25 mm stroke cylinder works as a robust part stop on conveyors, where the adjustable stroke sets the precise stopping point for different product widths.
Use the rear screw to set a repeatable clamp depth on assembly fixtures. The 25 mm rod and 80 mm bore provide the rigidity and force for holding workpieces during drilling or fastening.
Choose the SCJ80 when your load needs the 2513 N push force of an 80 mm bore at standard plant air. If you can manage with less force, the 63 mm bore delivers 1559 N push and a smaller footprint; for heavier work, the 100 mm bore steps up to 3927 N push. This adjustable-stroke version is the right pick over a fixed-stroke SC when you need to fine-tune the end position on the machine.
For a direct replacement, match an AirTAC SCJ80X25-10 with PT threads, basic mounting, and no magnet. If you later add sensors, order the -S magnet variant so CMSG/DMSG/EMSG switches can clamp onto the tie-rod barrel.
Adjustable-stroke checklist
At 0.5 MPa, push force is 2513 N and pull force is 2268 N (pull is lower because the 25 mm rod reduces the piston area on the return side). At the maximum operating pressure of 0.9 MPa, push force reaches 4523 N.
Yes, if you need the 10 mm stroke-end adjustment. The SCJ80X25-10 shares the same bore, rod diameter, and port size as the SC80, but the body is slightly longer to house the adjusting screw. Ensure your mounting and port thread (PT) match.
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