The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X250-30S 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, 250mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X250-30S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, offering 2513 N of push force at 0.5 MPa. A rear-cap adjusting screw lets you fine-tune the stroke end by up to 30 mm, making it ideal for commissioning and format changeovers without swapping the cylinder. Its 25 mm rod and PT3/8 ports handle demanding linear tasks.
This model includes a built-in magnet, allowing direct mounting of CMSG/DMSG/EMSG sensors for reliable, non-contact position sensing along the 250 mm nominal stroke. The tie-rod construction and 28 mm air cushion ensure robust, decelerated end-of-stroke performance. At the maximum operating pressure of 0.9 MPa, it delivers a substantial 4523 N of push force.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X250-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 250 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. |
| ×250 | 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 range allows engineers to precisely dial in the stroke end position during initial machine setup without needing to swap out fixed-stroke cylinders or machine custom stops.
Quickly adapt the cylinder's end position for different product sizes on a packaging or assembly line. The rear screw adjustment is far faster than re-positioning external sensors or hard stops for each batch.
In high-cycle pressing or clamping applications, the adjustable stroke can be used to take up mechanical wear on tooling or workpieces over time, maintaining consistent contact force and position without reprogramming.
Choose the SCJ80 bore for applications needing around 2513 N of push force at standard shop air. If your load is lighter, stepping down to a 63 mm bore reduces push force to 1559 N at 0.5 MPa, saving space and air consumption. For higher demands, the 100 mm bore provides 3927 N. This adjustable-stroke model is the right choice when the exact stroke length must be tuned on the machine; for a fixed, repeatable stroke, the standard SC series is a more economical alternative.
For this 250 mm stroke, ensure the rod is not subjected to significant side loads, which can cause bending and premature seal wear. If lateral forces are present, use an external guide rail or switch to a guided cylinder. This SCJ80X250-30S is a direct replacement for another AirTAC SCJ80 cylinder with a 250 mm nominal stroke, 30 mm adjust range, PT3/8 ports, and a magnet.
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 pull force is always lower due to the area of the 25 mm piston rod.
Yes. The '-S' in the model code SCJ80X250-30S signifies a built-in magnet. You can clamp compatible AirTAC CMSG, DMSG, or EMSG reed or solid-state sensors directly onto the cylinder barrel's tie-rod slots to detect end-of-stroke or intermediate positions.
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.