Airtac SAIJ80 Adjustable Cylinder SAIJ80AX250-10S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX250-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 250mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke250 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX250-10S
The AirTAC SAIJ80X250-10-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 2513N of push force at 0.5 MPa and features a 10mm adjustment range, creating a precise 240-250mm usable travel window for fine-tuning end positions during commissioning. The extruded aluminum barrel includes sensor grooves on both sides, and the -S magnet enables position detection with AirTAC CMSE reed or DMSE electronic solid-state switches.
This variant is built with an SUS420J2 stainless steel rod (code A) for improved corrosion resistance and uses PT tapered port threads. The rear adjustment screw functions strictly as a mechanical stop to set the retract end position; it does not lock or hold the load without continuous live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX250-10S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX250-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX250-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×250 | 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 SAIJ80 Adjustable Cylinder SAIJ80AX250-10S Is Used
Machine Changeover
Dial in the 240-250mm travel window during product size changes without adding external stops or replacing the cylinder.
End-Position Tuning
Fine-tune the retract end position at commissioning to achieve exact mechanical alignment using the rear adjustment screw.
Variable End Stops
Accommodate slight variations in incoming product dimensions on a packaging line by adjusting the stroke within the 10mm range.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX250-10S the Right Cylinder?
Choose this 80mm bore when an application requires approximately 2500N of thrust at 0.5 MPa, stepping up from the 50mm bore which provides 982N, or down from the 100mm bore which yields 3927N. The adjustable stroke is ideal for machine setups requiring variable end-stops or product changeovers without swapping the entire cylinder, offering a distinct advantage over a fixed-stroke SAI model. To match this ISO 15552 replacement exactly, specify the 80mm bore, 250mm stroke, 10mm adjustment, PT port thread, and the -S magnet.
Because the 250mm stroke is substantial, ensure external guiding is used to prevent excessive side-loading on the M20x1.5 rod thread. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR styles found in some other lines.
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 SAIJ80 Adjustable Cylinder SAIJ80AX250-10S FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. It can reach up to 4523N push force at 0.9 MPa.
The rear adjuster acts as a mechanical stop that allows you to shorten the effective stroke by up to 10mm, providing a usable travel window of 240-250mm from the nominal 250mm stroke. It requires live air to function and does not lock the load.
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