The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X75-10 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø80mm bore, 75mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X75-10 is an 80 mm bore double-acting single-rod cylinder with a field-adjustable stroke end, providing up to 10 mm of fine-tuning via a rear-cap screw. At 0.5 MPa it delivers 2513 N push and 2268 N pull, making it a strong mid-range actuator for positioning tasks where the nominal 75 mm stroke needs on-machine trimming without cylinder swaps.
This tie-rod cylinder uses a 25 mm rod and PT3/8 ports, with a 28 mm air cushion at each end for controlled deceleration. The body length A(SCJ) is 239 mm, slightly longer than a fixed-stroke SC of the same bore to accommodate the adjusting mechanism. It operates from 0.15 to 1.0 MPa and suits speeds of 30-800 mm/s.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X75-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 75 mm |
| Stroke adjustment | Up to 10 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. |
| ×75 | Nominal (maximum) stroke length in mm. |
| -10 | 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 setup, the 10 mm adjust range lets technicians dial in the exact end-stop position for gripper closure or part placement without re-machining brackets or swapping cylinders.
On packaging lines running multiple box sizes, the rear screw quickly shifts the stroke end to match a new product width, reducing changeover time compared to fixed mechanical stops.
In repetitive clamping fixtures, the adjustable stroke compensates for jaw or pad wear over time, maintaining consistent clamp force without replacing the actuator or adding shims.
Step up to the 100 mm bore SCJ if you need more force (3927 N push at 0.5 MPa); step down to 63 mm (1559 N push) for a lighter, more compact solution. If your application does not require field stroke adjustment, the fixed-stroke SC80X75 is a simpler, cost-effective alternative. For guided loads or high side-force moments, pair the cylinder with an external guide or consider a guided cylinder.
A direct replacement must match the 80 mm bore, 75 mm nominal stroke, 10 mm adjust range, PT3/8 ports, and basic mounting configuration. This model is built without a magnet; if position sensing is needed, order the -S variant and add CMSG/DMSG sensors.
Adjustable-stroke checklist
At 0.5 MPa air pressure, the cylinder produces 2513 N pushing force and 2268 N pulling force (the difference is due to the 25 mm rod area). At the maximum operating pressure of 1.0 MPa, push force reaches 4523 N.
Yes, if you need the 10 mm stroke-end adjustment feature. The SCJ shares the same bore, rod, port, and mounting accessories as the SC80, but the body is slightly longer. Ensure the extra length and the rear adjusting screw fit your machine envelope.
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