Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-75S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 290mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke290 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-75S
The AirTAC SAIJ50X290-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 982N of push force at 0.5 MPa. It features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet (-S) for direct compatibility with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
With a 290mm nominal stroke and a 75mm adjustment range, this model provides a usable travel window of 215-290mm. This allows precise end-position tuning at commissioning or during product changeovers without swapping the cylinder or adding external stops. The rear screw acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-75S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 290 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×290 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-75S Is Used
Variable Product Changeover
Dial in the 215-290mm travel window during format changes on packaging lines, using the rear stopper to quickly match new carton or part sizes.
Commissioning Fine-Tuning
Precisely set the end-of-stroke position during machine setup without machining external stop blocks or replacing the entire cylinder.
Adjustable Diverting
Control diverter arms on conveying systems where the required actuation distance occasionally needs slight mechanical trimming to accommodate different package profiles.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-75S the Right Cylinder?
Choose this 50mm bore when an application requires around 982N push force at 0.5 MPa, stepping up from a 40mm bore (628N) or down from a 63mm bore (1559N). The 75mm adjustable window is ideal for machines processing varying product sizes, providing a variable end-stop instead of relying on a fixed-stroke SAI cylinder. For load-holding without continuous air pressure, an external rod lock or a SAIL/BSAI cylinder is required, as the SAIJ adjuster is not a locking device.
Because the 290mm stroke exceeds 300mm guidelines for unsupported loads, ensure an external guide supports the rod to prevent excessive side-loading. This cylinder uses a PT tapered port thread and supports the SAIJ mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). It is dimensionally interchangeable per ISO 15552.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-75S FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. At 0.7 MPa, the push force increases to 1374N.
The rear adjuster screw allows you to shorten the effective travel from the 290mm nominal stroke down to as little as 215mm, creating a 215-290mm usable window. It functions as a mechanical stop for end-position tuning and requires live air to hold the load.
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