The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X175-30S 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 SCJ80X175-30S is an 80 mm bore, double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end. Its rear-cap screw provides a 30 mm adjustment range, letting you fine-tune the 175 mm nominal stroke for precise end-position setup without changing the cylinder. At 0.5 MPa, it delivers 2513 N of push force and 2268 N on the pull stroke, driven through a 25 mm diameter piston rod.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for reliable end-of-stroke detection. The body length A is 239 mm, and it features an adjustable air cushion of 28 mm for smooth deceleration. It uses PT3/8 ports and an M20x1.5 rod thread, making it a robust unit for medium-to-heavy linear tasks where stroke length needs on-machine tuning.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X175-30S |
|---|---|
| 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 adjustment screw lets technicians dial in the exact stroke end during machine commissioning, compensating for minor stack-up tolerances in tooling without re-machining mounts.
Ideal for adjustable part stops on conveyors where product sizes change. The stroke can be quickly shortened by up to 30 mm to handle different box or pallet widths.
Used in clamping fixtures where the final clamp thickness varies. The adjustable stroke end prevents over-travel and allows fine control of the clamping position, protecting delicate parts.
Step up to the 100 mm bore SCJ if your application needs more force; the SCJ100 delivers 3927 N of push at 0.5 MPa. If your stroke is fixed after commissioning, a standard SC80 fixed-stroke cylinder removes the adjustment mechanism for a simpler setup. For a drop-in replacement, match the 80 mm bore, 175 mm nominal stroke, 30 mm adjustment range, PT port thread, and the built-in magnet option.
At a 175 mm stroke, rod deflection under side load is generally manageable, but if the load is not guided or is applied off-axis, consider an external guide rail or switch to a guided cylinder to protect the rod bearing and piston seals from premature wear.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the cylinder produces 2513 N of push force and 2268 N of pull force. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 5026 N.
Yes, if you need field-adjustable stroke control. The SCJ80X175-30S shares the same 80 mm bore, PT3/8 ports, and single-rod design as the SC series but adds a rear adjustment screw. Ensure the 175 mm nominal stroke and 30 mm adjustment range fit your machine envelope, and verify the magnet sensor type if you are using position switches.
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