The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X65-40 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, 65mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The AirTAC SCJ80X65-40 is an 80 mm bore double-acting, single-rod cylinder with a field-adjustable stroke end, providing up to 40 mm of fine-tuning range on the nominal 65 mm stroke. This tie-rod design delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa, making it a robust actuator for applications requiring precise end-position control without swapping cylinders.
Equipped with a 25 mm diameter piston rod and PT3/8 ports, the SCJ80X65-40 features a 28 mm air cushion for smooth deceleration. The adjustable screw is located in the rear cap, allowing operators to quickly dial in the exact stroke needed during commissioning or format changes. Its body length A is 239 mm, providing a compact footprint for its force class.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X65-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 65 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. |
| ×65 | 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.
Quickly adjust the end stop for different product sizes on packaging or assembly lines without mechanical modifications.
Fine-tune the actuator stroke during initial machine setup to perfectly match the tooling interface.
Take up mechanical play or seal wear over time by slightly extending the effective stroke with the rear screw.
Select the SCJ80X65-40 when your application requires a push force of 2513 N at 0.5 MPa with the ability to shorten the stroke end by up to 40 mm on the machine. If a higher force is needed, stepping up to the 100 mm bore provides 3927 N of push force. For a fixed, non-adjustable stroke, the standard SC series is a direct alternative. This model is a direct replacement for any AirTAC SCJ80 cylinder with a 65 mm nominal stroke, 40 mm adjust range, PT ports, and basic mounting.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N. The maximum push force at the 0.9 MPa operating limit is 4523 N.
A screw in the rear cap sets the retracted end position. You can shorten the stroke by up to 40 mm from the nominal 65 mm without changing the cylinder body or mounting.
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