The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X220-50 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø80mm bore, 220mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X220-50 is an 80 mm bore, double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that provides up to 50 mm of field-adjustable stroke reduction. At 0.5 MPa, it delivers 2513 N of push force and 2268 N on the pull stroke, making it a solid mid-range actuator for applications that need on-the-fly end-position tuning.
This cylinder uses a 25 mm diameter piston rod and PT3/8 ports, with a 28 mm air cushion at each end to decelerate the load. The body length A for the SCJ series in this bore is 239 mm, and the maximum standard stroke available is 1500 mm. The operating range is 0.15–1.0 MPa with a speed of 30–800 mm/s, using standard TPU seals rated for -20 to +70 °C.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X220-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 220 mm |
| Stroke adjustment | Up to 50 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. |
| ×220 | Nominal (maximum) stroke length in mm. |
| -50 | 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 end-stop position during machine commissioning without swapping cylinders or machining hard stops. The 50 mm adjustment range lets you fine-tune the stroke on the fly.
Quickly adapt a packaging or assembly station to a new product size. The rear screw adjusts the stroke end, so a single SCJ80 cylinder handles multiple formats that require different push lengths.
In clamping or pressing fixtures, use the adjusting screw to take up mechanical wear over time. This maintains consistent contact pressure without reprogramming the machine controller.
Choose the SCJ80X220-50 when you need a field-tunable stroke end within a 50 mm window. If the force is too high, stepping down to a 63 mm bore reduces push force to 1559 N at 0.5 MPa; if you need more, the 100 mm bore offers 3927 N. This adjustable-stroke model is ideal for commissioning and format changes, but if your stroke is permanently fixed, a standard SC80X220 cylinder without the adjusting screw is a simpler pick.
For a direct replacement, match the 80 mm bore, 220 mm nominal stroke, 50 mm adjust range, PT ports, and basic mounting. The 220 mm stroke is well within the standard range, but for any stroke over 300 mm, evaluate side-loading on the rod and consider an external guide or a guided cylinder to prevent bending.
Adjustable-stroke checklist
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 pull force is lower because the rod reduces the effective piston area on the return stroke.
Yes, if you need the adjustable stroke feature. The SCJ80X220-50 mounts in the same space as an SC80 but adds a rear adjusting screw for a 50 mm stroke-end range. Ensure the port size (PT3/8), rod thread (M20x1.5), and mounting style match your existing setup.
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