The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X200-20 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 SCJ80X200-20 is an 80 mm bore double-acting cylinder with a single rod and a rear-cap adjusting screw that provides up to 20 mm of field-adjustable stroke-end reduction. At 0.5 MPa it delivers 2513 N of push force, making it a strong mid-range actuator for tasks like clamping, pressing, and part transfer where the final stop position needs fine-tuning during commissioning or after tooling wear.
This model uses a 25 mm diameter piston rod, PT3/8 ports, and a 28 mm air cushion to decelerate the load smoothly. The tie-rod body length A is 239 mm, slightly longer than a fixed-stroke SC of the same bore to accommodate the adjusting mechanism. The standard TPU seal and PT threads suit general industrial environments from -20 to +70 °C.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X200-20 |
|---|---|
| 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.
Use the 20 mm rear screw to quickly dial in the exact end-of-stroke position on a new assembly line without fabricating custom hard stops, saving hours of mechanical setup time.
Adjust the stroke end for different product sizes on a packaging machine. The operator can shift from a tall box to a shallow tray in seconds by turning the rear screw, with no cylinder swap required.
In a high-cycle pressing station, use the adjuster to take up slack as tooling or gripper pads wear down, maintaining consistent contact force and part quality without stopping production for a full cylinder change.
Step up to the 100 mm bore SCJ100X200-20 if your application needs more force, as it provides 3927 N of push at the same 0.5 MPa pressure. If your stroke length is fixed and never needs field adjustment, the standard SC80X200 fixed-stroke cylinder is a simpler, more cost-effective choice. For a direct replacement, match an AirTAC SCJ adjustable-stroke cylinder with an 80 mm bore, 200 mm nominal stroke, a -20 adjust range, PT3/8 ports, and a basic mounting style. At 200 mm of stroke, rod deflection under side load is generally minimal, but for any off-axis force, consider adding an external linear guide or switching to a guided cylinder to protect the rod bearing and seal.
Adjustable-stroke checklist
Because it is a single-rod cylinder, push and pull forces are different. At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N. The maximum push force at the 0.9 MPa operating limit is 4523 N. The rear adjusting screw changes only the stroke end position, not the output force.
Yes, the SCJ80X200-20 can replace an SC80X200 if you need the ability to fine-tune the stroke end. The mounting footprint, port size (PT3/8), and rod dimensions are identical. Just ensure you have clearance for the slightly longer body length A of 239 mm and that the 20 mm adjustment range covers your stroke-reduction needs.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.