The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X200-20STC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø80mm bore, 200mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X200-20STC is a double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that provides up to 20 mm of field-adjustable stroke-end reduction. With an 80 mm bore, it delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa, making it a strong workhorse for applications needing on-the-fly end-position tuning without swapping the cylinder.
This model is configured with a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors and a centre trunnion pivot (TC mount, supplied with TCM1 bracket) for swinging loads. The body length A(SCJ) is 239 mm, and the 25 mm diameter rod provides robust guidance for the 200 mm nominal stroke.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X200-20STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 200 mm |
| Stroke adjustment | Up to 20 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. |
| -20 | 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 end position for different product sizes on packaging or filling lines by adjusting the rear screw, eliminating the need for multiple fixed hard stops.
The centre trunnion mount (TC) allows the cylinder to swing, and the 20 mm adjustable stroke lets operators precisely dial in the gate angle for smooth product diversion.
Compensate for fixture wear or varying workpiece thicknesses in machining centres by reducing the stroke end with the adjusting screw, maintaining consistent clamping force.
Choose the SCJ80 over the SCJ63 when you need more force than the 63 mm bore's 1559 N push at 0.5 MPa. If your application requires a fixed, non-adjustable stroke, the standard SC80 series is a lighter and more economical alternative. For a direct replacement, match an AirTAC SCJ cylinder with an 80 mm bore, 200 mm nominal stroke, a 20 mm adjustment range, PT port thread, and centre trunnion (TC) mounting with a magnet.
For this 200 mm stroke, ensure the load is guided to prevent excessive side-loading on the rod, especially when the trunnion mount allows the cylinder to pivot. An external guide rail or a rod-alignment coupler is recommended for long-stroke, pivoting applications.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. The maximum push force at 0.9 MPa is 4523 N.
Yes, if you need the 20 mm stroke-end adjustment. The SCJ80X200-20STC has the same bore and nominal stroke but is physically longer due to the adjusting mechanism. Ensure you match the PT port thread, TC trunnion mount, and magnet sensor option for a drop-in replacement.
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