The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X60-75S 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, 60mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The AirTAC SCJ80X60-75S is an 80 mm bore, double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end. A rear-cap screw provides a generous 75 mm of adjustment range, letting you fine-tune the 60 mm nominal stroke on the machine without swapping the cylinder. It delivers 2513 N of push force at 0.5 MPa, with a 25 mm diameter piston rod and PT3/8 ports.
This model includes a built-in magnet (-S suffix), so CMSG, DMSG, or EMSG solid-state sensors clamp directly onto the tie-rod barrel for reliable end-of-stroke detection. The body length A is 239 mm, and the standard air cushion is 28 mm long at each end, providing smooth deceleration for speeds up to 800 mm/s.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X60-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 60 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. |
| ×60 | 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.
The 75 mm adjustment range allows a single cylinder to handle multiple product sizes on a packaging line, eliminating the need to stock multiple fixed-stroke cylinders for quick format swaps.
During machine commissioning, the rear screw lets technicians precisely set the push stroke end for a pressing or clamping operation, compensating for part tolerance stack-ups without re-machining hard stops.
In high-cycle assembly fixtures, the adjustable stroke can be periodically tweaked to take up mechanical wear on tooling tips, maintaining consistent contact force and extending the service life of the tooling.
Choose the SCJ80 bore when your application needs around 2500 N of push force at standard shop air. If you need more force, the SCJ100 provides 3927 N push at 0.5 MPa; for a lighter, more compact solution, the SCJ63 delivers 1559 N. This adjustable-stroke variant is the right pick when you need to dial in a precise end position during commissioning or changeover, rather than using a fixed-stroke SC cylinder. A direct replacement must match the 80 mm bore, 60 mm nominal stroke, 75 mm adjustment range, PT port thread, and the -S magnet option. For strokes of 300 mm or more, evaluate the rod bearing load and consider an external guide to prevent rod bending under high side loads.
Adjustable-stroke checklist
The push force is 2513 N at 0.5 MPa and 4523 N at the maximum operating pressure of 0.9 MPa. The pull force is lower because the 25 mm rod reduces the piston area on the return stroke, yielding 2268 N at 0.5 MPa.
A screw in the rear cap sets the physical stroke end, shortening the 60 mm nominal stroke by up to 75 mm. It is a mechanical end-stop adjustment, not a locking device. The piston will drift if air pressure is lost; to hold a load without pressure, you must add an external rod lock or pilot-operated check valve.
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