The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X170-100S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø80mm bore, 170mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X170-100S is an 80 mm bore adjustable-stroke pneumatic cylinder that lets you fine-tune the stroke end position by up to 100 mm using a rear-cap adjusting screw, without swapping the cylinder or adding external hard stops. With a 25 mm piston rod and PT3/8 ports, it delivers 2513 N of push force at 0.5 MPa and up to 4523 N at 0.9 MPa, making it a strong choice for mid-range industrial actuation where stroke flexibility is needed during setup or changeover.
This model includes a built-in magnet (-S suffix), so you can directly mount CMSG, DMSG, or EMSG reed and solid-state sensors on the tie-rod barrel for reliable end-of-stroke position feedback. The body length A(SCJ) is 239 mm, it uses an adjustable air cushion to decelerate the piston smoothly, and the standard TPU seal operates reliably from -20 to +70 °C.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X170-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 170 mm |
| Stroke adjustment | Up to 100 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. |
| ×170 | Nominal (maximum) stroke length in mm. |
| -100 | 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 100 mm adjustment range allows a single packaging machine to quickly change the end-stop position for different box sizes, eliminating mechanical change parts and reducing downtime between production runs.
Fine-tune the feed stroke of a material pusher on a cut-to-length saw line to account for blade kerf wear or to switch between different cut lengths without reprogramming a servo drive.
A maintenance technician can easily recalibrate the fully extended position of a pneumatic diverter gate on a conveyor line to ensure a flush seal against a new wear plate, extending the system's service life.
Choose the SCJ80 bore when your application needs roughly 2500 N of push force at standard shop air. If you need more force, stepping up to the 100 mm bore provides 3927 N at 0.5 MPa; if you need less, the 63 mm bore delivers 1559 N. The 100 mm adjustable range on this model is ideal for applications with significant variation in workpiece thickness or stop position. For a simpler, fixed-stroke design, the standard SC80 cylinder is a direct alternative. The exact replacement match is an AirTAC SCJ80X170-100S with PT ports, basic mounting, and a magnet.
For this 170 mm nominal stroke, side-loading is typically not a primary concern, but ensure the load is guided and aligned with the piston rod axis to prevent premature rod bearing and seal wear. If the load cannot be externally guided, consider a guided cylinder instead.
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 increases to 4523 N. The push force is higher than the pull force because the single piston rod reduces the effective area on the return stroke.
Yes, you can replace an SC80 with an SCJ80 if you need field-adjustable stroke. The mounting footprints and port sizes are the same. Ensure you match the nominal stroke (170 mm), port thread (PT), and order the -S magnet option if you need sensor compatibility. The SCJ body is slightly longer than the SC to accommodate the adjusting screw mechanism.
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