The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X250-100 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø80mm bore, 250mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X250-100 is a double-acting, single-rod pneumatic cylinder that puts stroke-end fine-tuning directly in your hands. Its rear-cap adjusting screw provides up to 100 mm of adjustment, letting you dial in the exact 250 mm nominal stroke your application needs without swapping the cylinder or adding external hard stops. With a 25 mm piston rod and PT3/8 ports, this cylinder delivers a substantial 2513 N of push force at 0.5 MPa and can reach 4523 N at its 0.9 MPa maximum operating pressure.
Built on the rugged SC tie-rod platform, the SCJ80X250-100 features an adjustable air cushion to decelerate the piston smoothly, with a cushion length of 28 mm. The body length A(SCJ) is 239 mm, providing a compact yet powerful package for medium-duty automation tasks. This genuine AirTAC component is designed for filtered air (40 µm) and operates reliably in ambient temperatures from -20 to +70 °C with its standard TPU seals.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X250-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 250 mm |
| Stroke adjustment | Up to 100 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. |
| ×250 | Nominal (maximum) stroke length in mm. |
| -100 | 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.
Perfect for machine builders who need to finely tune the end position of a pusher or stop during initial system setup. The 100 mm adjustment range on the 250 mm stroke allows for quick, tool-free optimization of the actuator's travel without disassembling linkages.
Ideal for packaging lines that handle multiple box or product sizes. The adjustable stroke lets operators quickly reset a diverter gate or pusher arm's stopping point between batches, minimizing downtime and eliminating the need for multiple fixed-stroke cylinders.
In clamping or pressing operations, the rear adjusting screw can be used to take up mechanical wear in tooling or workpieces over time. This maintains consistent clamping force and position without replacing parts, extending the service life of the entire assembly.
Choose the SCJ80X250-100 when your process requires frequent, precise stroke-end adjustments within a 100 mm window, such as during commissioning or format changeovers. If you need more force, stepping up to the 100 mm bore SCJ100 series provides 3927 N of push force at 0.5 MPa. For applications where the stroke is permanently fixed, a standard SC80X250 cylinder offers a simpler, more cost-effective solution. A direct replacement must match the 80 mm bore, 250 mm nominal stroke, 100 mm adjustment range, PT port thread, and basic mounting. For this 250 mm stroke, ensure the rod is not subjected to significant side loads; if misalignment is present, use an external guide rod or switch to a guided cylinder to prevent rod bending and seal wear.
Adjustable-stroke checklist
As a single-rod cylinder, push and pull forces differ. At the standard 0.5 MPa pressure, 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 adjusting screw does not alter these force ratings; it only sets the stroke end position.
It can replace an SC80 only if the application requires the 100 mm field-adjustable stroke feature and the slightly longer body length is acceptable. A direct replacement must have the same 80 mm bore, 250 mm nominal stroke, PT ports, and basic mounting. If you do not need the stroke adjustment, a standard SC80X250 is the more economical and dimensionally compact choice.
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