The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X60-40 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø80mm bore, 60mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X60-40 is an 80 mm bore double-acting, single-rod pneumatic cylinder that delivers 2513 N of push force at 0.5 MPa, making it a solid performer for medium-to-heavy linear tasks. Its defining feature is the rear-cap adjusting screw, which provides a 40 mm stroke-end adjustment range—operators can dial in the exact stop position on the machine without changing 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 cylinder includes an adjustable air cushion (28 mm length) for smooth deceleration. The body length A(SCJ) is 239 mm, and the standard TPU seals support an operating temperature range of -20 to +70 °C, ensuring reliable cycling in general industrial environments.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X60-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 60 mm |
| Stroke adjustment | Up to 40 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. |
| ×60 | Nominal (maximum) stroke length in mm. |
| -40 | 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 40 mm adjustment range lets technicians quickly dial in the exact stroke end position during initial machine setup, eliminating the need to swap out fixed-stroke cylinders for minor dimensional tweaks.
Ideal for pusher or diverter stations on packaging lines where the product length changes between batches. The stroke can be easily reset via the rear screw to accommodate new box sizes without mechanical rework.
In clamping or pressing fixtures, the adjustable stroke compensates for gradual wear on tooling or contact surfaces over time, maintaining consistent clamp force and position without reprogramming or adding shims.
Choose this SCJ80X60-40 when you need a 60 mm nominal stroke that can be fine-tuned by up to 40 mm on the fly, a common requirement during commissioning or format changeovers. If the force is insufficient, stepping up to the 100 mm bore provides 3927 N of push at 0.5 MPa; if it is excessive, the 63 mm bore offers 1559 N. For a fixed, non-adjustable stroke, the standard SC80 cylinder is the direct alternative.
A direct replacement must match an AirTAC SCJ adjustable-stroke cylinder with an 80 mm bore, 60 mm nominal stroke, a 40 mm adjustment range, PT ports, and basic mounting. This model does not include a magnet; if sensor-based position feedback is needed, select the -S magnet option to use CMSG/DMSG sensors. For strokes of 300 mm or more, evaluate side-loading on the 25 mm rod and consider adding an external guide or switching to a guided cylinder.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, it generates 2513 N of push force and 2268 N of pull force (the difference is due to the single 25 mm rod). At the maximum operating pressure of 0.9 MPa, the push force reaches 4523 N.
No. The SCJ80X60-40 is a double-acting cylinder and will not hold its position if air pressure is lost or the valve is centered. The stroke-adjust screw only sets the end-stop position and the air cushion only decelerates the piston; neither acts as a mechanical lock. An external rod brake or pilot-operated check valve is required for load holding without live pressure.
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