The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X200-40 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø80mm bore, 200mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X200-40 is an 80 mm bore, double-acting single-rod pneumatic cylinder with a nominal 200 mm stroke and a 40 mm rear adjusting screw, giving you the ability to fine-tune the stroke end position on the fly. This model delivers a substantial 2513 N of push force at 0.5 MPa and up to 4523 N at the maximum operating pressure of 0.9 MPa, making it a robust choice for medium-to-heavy automation tasks where the final stop point needs precise, mechanical adjustment without reprogramming.
The 25 mm diameter piston rod and 28 mm air cushion length provide reliable deceleration, while the tie-rod construction ensures durability. With a body length A(SCJ) of 239 mm, this cylinder is slightly longer than its fixed-stroke SC counterpart to accommodate the rear adjustment mechanism. It operates on 40 µm filtered air within a standard pressure range of 0.15–1.0 MPa and a speed of 30–800 mm/s.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X200-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 200 mm |
| Stroke adjustment | Up to 40 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. |
| -40 | 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.
A fixture that clamps parts of varying thicknesses. The 40 mm adjust range lets operators quickly set the final clamp position for each batch without changing tooling, using the 2513 N push force for a secure hold.
Acts as a cushioned, adjustable end-stop for a diverter gate on a conveyor. The stroke can be fine-tuned to perfectly align the gate with different chute openings, compensating for mechanical wear over time.
In a manual or semi-automated press, the cylinder provides the 4523 N max force while the rear screw sets a precise, repeatable press depth. This allows for quick changeover between assemblies with different insertion depth requirements.
Choose the SCJ80X200-40 when your application requires a powerful push but the exact stroke end needs to be dialed in during setup or changed for different product runs. If you need more force, stepping up to the 100 mm bore provides 3927 N of push at 0.5 MPa; for a lighter, more compact solution, the 63 mm bore offers 1559 N. This adjustable-stroke model is ideal for commissioning and format changes, but if your stroke is permanently fixed, the standard SC80X200 is a simpler, more cost-effective alternative. For a direct replacement, match an AirTAC SCJ cylinder with an 80 mm bore, 200 mm nominal stroke, a 40 mm adjust range, and PT3/8 ports. For this 200 mm stroke, ensure the load is guided if significant side forces are present to prevent rod bending.
Adjustable-stroke checklist
The theoretical push force at 0.5 MPa is 2513 N, and the pull force on the retract stroke is 2268 N due to the 25 mm rod area. At the maximum operating pressure of 1.0 MPa, the push force reaches 5026 N. Always design your application around your specific working pressure.
Yes, but only if the extra body length for the adjusting screw is acceptable in your machine envelope. The SCJ80X200-40 is a direct dimensional replacement for another AirTAC SCJ of the same bore, stroke, and adjust range. It will not directly interchange with a standard SC cylinder without checking for the added rear-cap length.
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