The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X60-30 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, 60mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X60-30 is an 80 mm bore double-acting single-rod cylinder whose rear adjusting screw lets you fine-tune the stroke end by up to 30 mm without removing the cylinder from the machine. At 0.5 MPa it delivers 2513 N push and 2268 N pull, making it a strong mid-range actuator for tasks that need quick mechanical stroke adjustment during commissioning or format changes.
This model uses a 25 mm diameter piston rod with an M20x1.5 male thread and PT3/8 pneumatic ports. The integral air cushion (28 mm long) decelerates the piston smoothly, and the tie-rod construction keeps the 239 mm body length A(SCJ) serviceable. The nominal stroke is 60 mm, well within the 1500 mm maximum standard stroke for this bore.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X60-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 60 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. |
| ×60 | 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.
Dial in the exact stroke end during machine bring-up without swapping cylinders or machining hard stops. The 30 mm adjustment range covers most trial-and-error positioning needs.
Quickly re-set a pusher or stop position when a packaging line switches between product sizes. One operator can adjust the rear screw in seconds.
Take up mechanical play or tooling wear over time by advancing the stroke end slightly. Keeps the process in spec without replacing the actuator.
Step up to the 100 mm bore SCJ if your load exceeds about 2500 N push at 0.5 MPa (the 100 mm bore provides 3927 N). Step down to the 63 mm bore (1559 N push) when space or weight is tight and the force demand is lower. For a direct replacement, match an SCJ80 cylinder with a 60 mm nominal stroke, a 30 mm adjust range, PT3/8 ports, and basic mounting.
If your application needs a fixed, non-adjustable stroke, the standard SC80 series is a simpler alternative. For strokes of 300 mm or more on this rod size, consider an external guide rail or a guided cylinder to protect the rod from side-load bending.
Adjustable-stroke checklist
At 0.5 MPa air pressure the push force is 2513 N and the pull force is 2268 N (the difference is due to the single 25 mm rod area). At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 5026 N.
No. The SCJ80X60-30 does not lock or hold position when air pressure is lost or the valve centres. The rear adjusting screw only sets the stroke end position; it is not a brake. For load holding without live pressure, add an external rod lock or a pilot-operated check valve.
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