The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X200-75S 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, 200mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X200-75S is an 80 mm bore double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, delivering a substantial 2513 N of push force at 0.5 MPa. A rear-cap adjusting screw provides up to 75 mm of stroke-end reduction, allowing machine builders to fine-tune the piston stop position on the fly without swapping the cylinder or adding external hard stops. Its 25 mm diameter piston rod and PT3/8 ports suit medium-to-heavy linear push tasks where commissioning adjustments or format changeovers are frequent.
This model includes a built-in magnet (-S suffix), enabling direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the tie-rod barrel for precise end-of-stroke or mid-stroke position feedback. The standard TPU seal operates reliably from -20 to +70 °C, and the 28 mm air cushion at each end decelerates the piston quietly. With a body length of 239 mm, this cylinder is a direct, drop-in replacement for another AirTAC SCJ80X200-75S of the same configuration.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X200-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 200 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. |
| ×200 | 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.
Fine-tune the 200 mm stroke end by up to 75 mm during machine commissioning to perfectly align a pusher or stop without re-machining brackets.
Quickly adjust the stroke end for different product sizes on a packaging or sorting line, minimizing downtime between batches.
Compensate for tooling or pad wear over time by slightly extending the effective stroke, maintaining consistent contact pressure in a pressing or clamping station.
Choose the SCJ80 when your application needs the 2513 N push force class at 0.5 MPa. If your load requires a higher force, stepping up to the 100 mm bore SCJ100 delivers 3927 N of push at the same pressure. For lighter, more compact machines, the 63 mm bore SCJ63 provides 1559 N. The adjustable stroke is ideal for processes where the end position must be dialed in during setup; if your stroke length is permanently fixed, a standard SC fixed-stroke cylinder is a simpler, more economical choice. For strokes of 200 mm or more, ensure the rod is guided externally if significant side loads are present, or consider a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 4523 N. The push force is higher because the single rod reduces the piston area on the return side.
Yes, if you need the ability to adjust the stroke end. The SCJ80X200-75S replaces another AirTAC SCJ80 with a 200 mm nominal stroke and 75 mm adjust range. It is not a direct dimensional replacement for a fixed-stroke SC cylinder, as the rear adjusting screw adds length. Ensure your mounting and porting (PT3/8) match.
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