The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X300-100 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, 300mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X300-100 is a double-acting, single-rod pneumatic cylinder with a 100mm rear adjusting screw, letting you fine-tune the stroke end position anywhere from 200mm to the full 300mm nominal stroke directly on the machine. With an 80mm bore, it delivers a substantial 2513 N of push force at 0.5 MPa and 4523 N at 0.9 MPa, driven by a 25mm diameter piston rod. The cylinder body measures 239mm in length and uses a 28mm air cushion to decelerate the piston quietly at end of travel.
This tie-rod cylinder is built for flexible automation where stroke length needs to be dialed in during commissioning or changed for different product formats without swapping the actuator. The PT3/8 port and M20x1.5 rod thread provide robust connections, and the standard TPU seals operate reliably from -20 to +70 °C. As a genuine AirTAC component, it offers consistent performance and long service life in demanding industrial environments.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X300-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 300 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. |
| ×300 | 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.
Quickly adjust the end stop for different box or pallet sizes on a packaging line by turning the rear screw, eliminating the need to swap cylinders or add mechanical stops during product changeovers.
Dial in the exact push stroke for a pressing or clamping operation during machine commissioning. The 100mm adjustment range allows fine-tuning the final position without re-machining any brackets.
In high-cycle assembly fixtures, use the adjustable stroke to take up mechanical wear on tooling or contact surfaces over time, maintaining consistent part engagement without replacing the actuator.
Choose the SCJ80X300-100 when you need a powerful, field-tunable stroke in a compact package. If your force requirement is lower, stepping down to the 63mm bore reduces push force to 1559 N at 0.5 MPa; for heavier loads, the 100mm bore provides 3927 N. This adjustable-stroke model is ideal for applications where the exact end position must be empirically set, unlike a fixed-stroke SC cylinder. For a direct replacement, match the 80mm bore, 300mm nominal stroke, 100mm adjust range, PT3/8 port thread, and basic mounting. At this 300mm stroke length, be mindful of side loads on the extended rod; if the load is not guided, add an external linear guide or consider a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the push force is 2513 N and the pull force is 2268 N. The push force is higher because the single rod reduces the effective piston area on the return stroke. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 5026 N.
Yes, the SCJ80X300-100 can replace an SC80X300 if you need the ability to shorten the stroke. It shares the same 80mm bore, port size, and mounting accessories. However, the SCJ body is slightly longer to house the adjusting screw, so ensure you have clearance at the rear cap for the screw mechanism.
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