The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X100-75S 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, 100mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X100-75S is a double-acting, single-rod pneumatic cylinder that puts stroke-end fine-tuning directly in your hands. Its rear-cap adjusting screw provides a generous 75 mm of adjustment range, letting you dial in the exact stopping position for a 100 mm nominal stroke without swapping the cylinder or adding external hard stops. With a 25 mm diameter rod and a PT3/8 port, this tie-rod cylinder delivers 2513 N of push force at 0.5 MPa, scaling up to 4523 N at 0.9 MPa.
This model includes a built-in magnet, signified by the 'S' suffix, so you can directly mount CMSG, DMSG, or EMSG reed and solid-state sensors along the barrel for reliable, non-contact position feedback. The body length A is 239 mm, and the adjustable air cushion decelerates the piston smoothly at both ends. As a genuine AirTAC component, it is built for consistent performance in automated equipment where stroke flexibility is key.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X100-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 100 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. |
| ×100 | 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 adjust range allows engineers to precisely set the end-of-stroke position during initial machine setup, eliminating the need for shims or custom hard stops and speeding up the commissioning process.
On packaging or sorting lines, operators can quickly adjust the cylinder's stroke to accommodate different product sizes or box formats without mechanical modifications, minimizing downtime between production runs.
In clamping or pressing applications, the adjusting screw can be used to take up mechanical wear on tooling or contact surfaces over time, maintaining consistent clamping force and position without replacing the actuator.
Choose the SCJ80 series when your application demands the force of an 80 mm bore—2513 N push at 0.5 MPa—but requires the ability to fine-tune the stroke end position by up to 75 mm during commissioning or changeovers. If your force needs are lower, stepping down to a 63 mm bore reduces push force to 1559 N at 0.5 MPa; for significantly higher force, the 100 mm bore provides 3927 N. If the stroke length is fixed and will never need field adjustment, the standard SC fixed-stroke cylinder is a more economical choice. For a direct replacement, match an SCJ80 cylinder with a 100 mm nominal stroke, a 75 mm adjust range, PT3/8 ports, and a built-in magnet. Since the stroke is 100 mm, standard mounting options like the FA front flange or LB foot mount are typically sufficient, but for strokes over 300 mm, always evaluate side-loading and rod bending.
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 slightly less at 2268 N at 0.5 MPa because the 25 mm piston rod reduces the effective area on the return stroke.
No. The stroke-adjusting screw only sets the mechanical end-of-stroke position and the air cushion only decelerates the piston. Neither feature acts as a lock or brake. If the load must be held securely when air pressure is lost or the valve is centered, you must add an external rod brake, a mechanical lock, or a pilot-operated check valve.
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