The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X175-30 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø80mm bore, 175mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X175-30 is an 80 mm bore double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end. A rear-cap adjusting screw provides up to 30 mm of retraction from the 175 mm nominal maximum, letting you fine-tune the piston stop without remounting the cylinder. At 0.5 MPa it delivers 2513 N push and 2268 N pull, with a 25 mm piston rod and PT3/8 ports.
This tie-rod cylinder uses an adjustable air cushion (28 mm length) for smooth deceleration and operates from 0.15 to 1.0 MPa. The body length A is 239 mm, making it a compact solution when end-position tweaking is needed during commissioning or format changes. Standard TPU seals suit -20 to +70 °C.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X175-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 175 mm |
| Stroke adjustment | Up to 30 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. |
| ×175 | Nominal (maximum) stroke length in mm. |
| -30 | 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 30 mm rear adjuster lets technicians dial in the exact stroke end during machine commissioning without cutting brackets or adding external hard stops, speeding up line start-up.
On packaging or sorting lines, the adjustable stroke allows operators to quickly reset the pusher or diverter end position when switching between box sizes or product formats.
In clamping or pressing fixtures, the screw can be advanced to take up mechanical wear in tooling or seals over time, maintaining consistent clamp force without replacing the cylinder.
Choose the SCJ80 when you need the 2513 N push force class at 0.5 MPa and the ability to dial in the stroke end by up to 30 mm on the machine. If your load requires less force, the 63 mm bore SCJ63 series offers 1559 N push; for higher force, step up to the 100 mm bore SCJ100 at 3927 N push. When the stroke is fixed and never needs field adjustment, the standard SC fixed-stroke cylinder is a simpler, lower-cost alternative.
For a drop-in replacement, match an AirTAC SCJ adjustable-stroke cylinder with the same 80 mm bore, 175 mm nominal stroke, -30 adjustment range, PT3/8 ports, and basic mounting. The 175 mm stroke is well within the 1500 mm maximum standard stroke for this bore, so side-load concerns are minimal, but always align the rod with the load axis.
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, push force reaches 4523 N. The pull force is lower because the 25 mm piston rod reduces the effective area on the return stroke.
Yes, if you need the ability to fine-tune the stroke end. The SCJ80X175-30 has the same 80 mm bore, 175 mm nominal stroke, and PT3/8 ports as an SC80X175, but adds a rear adjusting screw with a 30 mm range. Ensure the slightly longer body length A (239 mm) fits your mounting space.
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