The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X500-50 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, 500mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X500-50 is a double-acting, single-rod pneumatic cylinder with a rear adjusting screw that provides up to 50 mm of field-adjustable stroke reduction. This allows fine-tuning of the end position without replacing the cylinder or adding external hard stops, making it ideal for commissioning and format changeovers. At 0.5 MPa, it delivers 2513 N of push force and 2268 N on the pull stroke, with a 25 mm piston rod and PT3/8 ports.
Built on the proven SC tie-rod platform, this 80 mm bore cylinder features an adjustable air cushion for smooth deceleration and a body length of 239 mm. The nominal 500 mm stroke is well within the 1500 mm maximum standard stroke for this bore, ensuring robust performance in industrial automation tasks that demand both power and precision end-point adjustment.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X500-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 500 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. |
| ×500 | 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 stroke end position during machine setup without swapping cylinders. The 50 mm adjustment screw allows operators to fine-tune the stopping point for a perfect fit with mating tooling or fixtures.
Quickly adapt a pusher or stopper station to a new product size on a packaging line. The adjustable stroke eliminates the need for mechanical stop changes, reducing downtime between production runs.
In high-cycle clamping or pressing applications, use the stroke adjuster to take up mechanical wear in the tooling over time, maintaining consistent clamp force and part quality without reprogramming the machine controller.
Choose the SCJ80X500-50 when your application requires a powerful 80 mm bore cylinder but the exact stroke length needs to be dialed in on the machine. The 50 mm adjustment range is ideal for accommodating part tolerance variations or optimizing a pressing operation. If 2513 N of push force at 0.5 MPa is insufficient, stepping up to the 100 mm bore provides 3927 N; if it is more force than needed, the 63 mm bore offers 1559 N.
For a fixed, non-adjustable stroke, the standard SC80X500 is a direct alternative. This model is a precise replacement for another AirTAC SCJ80X500-50 with PT ports and basic mounting. For strokes of 500 mm, ensure the rod is adequately supported against side loads; if the load is not guided, consider adding an external guide rail or switching to a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the cylinder provides 2513 N of push force and 2268 N of pull force. The pull force is lower due to the area of the 25 mm piston rod. At the maximum operating pressure of 1.0 MPa, the theoretical push force is 5026 N.
The SCJ80X500-50 includes a rear-cap adjusting screw that allows you to shorten the stroke end by up to 50 mm in the field. A standard SC80X500 has a fixed stroke that cannot be adjusted. The SCJ is chosen when you need the flexibility to fine-tune the piston's stopping position after installation.
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