The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X160-30S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø80mm bore, 160mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X160-30S is an 80 mm bore double-acting, single-rod pneumatic cylinder that puts field-adjustable stroke control directly on the machine. A rear-cap adjusting screw lets you shorten the stroke end by up to 30 mm without removing the cylinder, which is invaluable during commissioning, format changeovers, or when fine-tuning an end stop to compensate for tooling wear. With a 25 mm diameter piston rod and PT3/8 ports, it delivers 2513 N of push force at 0.5 MPa, scaling to 4523 N at the maximum operating pressure of 0.9 MPa.
The built-in magnet, designated by the -S suffix, allows easy clamping of CMSG, DMSG, or EMSG reed and solid-state sensors directly onto the tie-rod barrel for precise end-of-stroke or mid-stroke position feedback. The cylinder body length A(SCJ) is 239 mm, and the standard air cushion is 28 mm, providing reliable deceleration. This model is a genuine AirTAC component, sourced for consistent quality and dimensional accuracy in automated equipment.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X160-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 30 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. |
| ×160 | Nominal (maximum) stroke length in mm. |
| -30 | 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.
During machine bring-up, the 30 mm adjustment screw lets technicians fine-tune the actuator's end position in seconds, eliminating the need to fabricate shims or reposition hard stops.
On packaging lines that run multiple box sizes, the adjustable stroke allows operators to quickly reset the pusher stroke to match a new product length without swapping the cylinder.
In a gluing or light-press station, the screw adjusts the final clamp depth to account for material thickness variations, ensuring consistent bond pressure with the cylinder's 2513 N push force.
Choose the SCJ80 bore when your application needs roughly 2500 N of push force at standard plant air pressure. If you require more force, stepping up to the 100 mm bore provides 3927 N at 0.5 MPa; if you need less, the 63 mm bore delivers 1559 N. The 30 mm adjustable range on this SCJ80X160-30S is ideal for setups where the exact stopping position must be dialed in empirically. If your stroke length is fixed and will never need field adjustment, a standard SC80X160 fixed-stroke cylinder is a simpler, slightly shorter alternative. For replacement, match the 80 mm bore, 160 mm nominal stroke, 30 mm adjust range, PT port thread, and the -S magnet option. At this 160 mm stroke, rod deflection is minimal, but for any stroke beyond 300 mm, consider adding an external guide rail or switching to a guided cylinder to protect the rod from damaging side loads.
Adjustable-stroke checklist
Because it is a single-rod cylinder, push and pull forces differ. At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 4523 N. The theoretical maximum at 1.0 MPa is 513 kgf.
Only if you need the adjustable stroke feature. The SCJ80 is longer in body length than a fixed-stroke SC80 to house the adjusting screw mechanism. For a direct dimensional replacement, you must match the bore, nominal stroke, port type, and mounting. If you simply need a fixed 160 mm stroke, the standard SC80 is the correct part.
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