The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X275-100 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, 275mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X275-100 is a double-acting, single-rod pneumatic cylinder that delivers a substantial 2513 N of push force at 0.5 MPa, making it a workhorse for medium-to-heavy automation tasks. Its defining feature is the rear-cap adjusting screw, which provides a full 100 mm of field-adjustable stroke-end control, allowing you to fine-tune the 275 mm nominal stroke without swapping the cylinder or adding external hard stops.
Built on a durable tie-rod construction with a 25 mm diameter piston rod and PT3/8 ports, this 80 mm bore actuator includes an adjustable air cushion (28 mm length) for smooth deceleration. The body length A(SCJ) is 239 mm, and the unit operates reliably on filtered air from 0.15 to 1.0 MPa, with a maximum push force of 4523 N at 0.9 MPa.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X275-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 275 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. |
| ×275 | 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.
Quickly adjust the stroke end by up to 100 mm to accommodate different product sizes on packaging or filling lines, eliminating the need for multiple fixed-stroke cylinders and reducing downtime between batches.
Dial in the precise clamp or press depth for workpieces of varying thickness. The 4523 N max push force at 0.9 MPa provides ample power, while the screw sets a repeatable end position to prevent part damage.
Use the 100 mm adjustment range to fine-tune the position of a product stop or diverter gate on a conveyor. The 28 mm air cushion ensures a gentle, controlled stop even at higher cycle speeds.
This 80 mm bore model sits between the 63 mm bore (1559 N push at 0.5 MPa) and the 100 mm bore (3927 N push at 0.5 MPa). If your load requires more force, stepping up to the 100 mm bore is a direct path; for a lighter, more compact solution, the 63 mm bore is a better fit. The 100 mm adjustable range on this SCJ80X275-100 is ideal for applications with frequent format changes or where the exact stroke end needs to be dialed in during commissioning.
For a direct replacement, match the 80 mm bore, 275 mm nominal stroke, 100 mm adjust range, PT3/8 port thread, and basic mounting. If your application involves significant side loads, consider an external guide rail or a guided cylinder, as the 25 mm rod on this 275 mm stroke unit is designed primarily for axial thrust.
Adjustable-stroke checklist
The push force is 2513 N at 0.5 MPa and 4523 N at 0.9 MPa. The pull force is slightly less due to the 25 mm rod area, delivering 2268 N at 0.5 MPa. These forces are identical to a fixed-stroke SC80 cylinder of the same bore.
Yes, this is a direct form-and-function replacement for another AirTAC SCJ80X275-100 with PT ports and basic mounting. Ensure your replacement matches the 275 mm nominal stroke, 100 mm adjust range, and port type. If your old unit had a magnet or different mounting, you will need the corresponding suffix code.
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