The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X75-10S 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 SCJ80X75-10S is an 80 mm bore double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end. A rear-cap adjusting screw lets you shorten the stroke by up to 10 mm, which is ideal for fine-tuning the end position during commissioning or after tooling wear. The built-in magnet (S suffix) allows direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors along the tie-rod barrel for non-contact position feedback.
At 0.5 MPa air pressure, this cylinder delivers 2513 N of push force and 2268 N on the pull stroke, using a 25 mm diameter piston rod. The PT3/8 port and 28 mm air cushion at each end provide smooth deceleration. With a body length A(SCJ) of 239 mm, it fits into spaces where a fixed-stroke cylinder would require external hard stops. The maximum standard stroke for this bore is 1500 mm.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X75-10S |
|---|---|
| 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.
The 10 mm adjusting screw allows operators to dial in the exact stroke end position after mounting, compensating for bracket tolerances or fixture variations without loosening the cylinder body.
With the built-in magnet and a barrel-mounted sensor, this cylinder provides reliable end-of-stroke confirmation for a pop-up part stop on a conveyor line, where the stop height may need minor adjustment.
Use the 2513 N push force for a pneumatic clamp whose clamping depth must be set precisely. The rear screw provides a repeatable mechanical stop that is quicker to adjust than changing tooling.
Step up to a 100 mm bore SCJ if you need more force—the SCJ100 provides 3927 N push at 0.5 MPa. For applications where the stroke is fixed and never needs field adjustment, the standard SC80 fixed-stroke cylinder is a simpler, more cost-effective choice. If the load has significant side forces, especially at this 75 mm stroke, consider an external guide rail or a guided cylinder to protect the rod bearing.
As a direct replacement, match this unit with another SCJ80 cylinder with a 75 mm nominal stroke, 10 mm adjust range, PT3/8 ports, and the -S magnet option. The basic mounting configuration uses the integral tie-rod nuts for direct attachment, but you can add FA front flange or LB foot mounts using the F-SC80 series accessories.
Adjustable-stroke checklist
A screw in the rear cap acts as an internal stop for the piston, allowing you to shorten the stroke end by up to 10 mm. The nominal 75 mm stroke is the maximum; turning the screw reduces the extension length without affecting the cylinder's force or speed capabilities.
At the standard 0.5 MPa operating pressure, the push force is 2513 N and the pull force is 2268 N (the difference is due to the 25 mm rod area). At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 513 kgf.
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