The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X75-75STC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø80mm bore, 75mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X75-75STC is a double-acting, single-rod pneumatic cylinder from AirTAC that puts stroke-end fine tuning directly in your hands. Its rear-cap adjusting screw provides a full 75 mm of adjustment range, letting you dial in the exact stop position for the 75 mm nominal stroke without swapping the cylinder or adding external hard stops. With an 80 mm bore and a 25 mm piston rod, it delivers 2513 N of push force at 0.5 MPa and up to 4523 N at the maximum operating pressure of 0.9 MPa.
This particular model is factory-equipped with a built-in magnet (S) for direct mounting of CMSG/DMSG/EMSG sensors, and a centre trunnion (TC) mounting, supplied with the TCM1 bracket, that allows the cylinder to pivot and absorb misalignment in swinging applications. The body length A(SCJ) is 239 mm, and the adjustable air cushion decelerates the piston smoothly at each end of the stroke. It uses the standard PT port thread and TPU seals for reliable operation from -20 to +70 °C.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X75-75STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 75 mm |
| Stroke adjustment | Up to 75 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. |
| -75 | 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 adapt the end position for different product sizes on packaging or sorting lines without mechanical rework, using the full 75 mm adjustment range.
Fine-tune the clamp depth or pressing stroke on assembly fixtures to accommodate part tolerances, leveraging the cylinder's 4523 N max push force.
Adjust the stroke end of a diverter gate or product stop on a conveyor. The centre trunnion mount allows the cylinder to swing freely as the gate moves.
Choose the SCJ80 bore when your application needs a push force around 2513 N at 0.5 MPa. If you require more force, stepping up to the SCJ100 delivers 3927 N at the same pressure. For lighter, faster moves, the SCJ63 provides 1559 N. The 75 mm adjustment range on this model makes it ideal for commissioning trials or processes with frequent format changes. If your stroke is fixed and will never need field adjustment, the standard SC fixed-stroke cylinder is a simpler, more economical choice.
For replacement, match this exact configuration: an 80 mm bore, 75 mm nominal stroke, 75 mm adjustment range, PT ports, centre trunnion mounting (TC with TCM1 bracket), and a built-in magnet for sensors. The mounting kit is ordered as F-SC80TC. For strokes of 300 mm or more, always consider an external guide or a guided cylinder to protect the 25 mm rod from side loads and bending.
Adjustable-stroke checklist
The push force is 2513 N at 0.5 MPa and 4523 N at 0.9 MPa. The pull force is 2268 N at 0.5 MPa due to the 25 mm piston rod reducing the effective area on the return stroke.
A screw in the rear cap limits the piston's stroke end by up to 75 mm, allowing you to fine-tune the position. To replace it, order an SCJ80X75-75STC to get the same 80 mm bore, 75 mm nominal stroke, 75 mm adjust range, PT ports, centre trunnion mount, and built-in magnet.
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