Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 290mm 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
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-20S
The AirTAC SAIJ80X290-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513 N push force at 0.5 MPa, utilizing a 25 mm carbon steel rod and G3/8 ports. By integrating an SUS420J2 stainless steel rod material (code A), it provides enhanced resistance against surface corrosion in humid operating environments.
This specific SKU features a 290 mm nominal stroke that can be fine-tuned backward by up to 20 mm, creating a usable travel window of 270-290 mm. The extruded aluminum barrel includes sensor grooves on both sides, and the included magnet (-S) directly supports position detection using AirTAC CMSE reed or DMSE electronic solid-state switches.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 290 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 SAIJ80AX290-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | 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 SAIJ80 Adjustable Cylinder SAIJ80AX290-20S Is Used
Machine Changeover
Quickly shift the 270-290 mm end-stop to accommodate new product lengths on a packaging line without disassembling the pneumatic setup.
Position Calibration
Fine-tune the exact retraction point during machine commissioning to prevent mechanical crashes and ensure precise part seating.
Variable End Stops
Adjust the stroke dynamically for diverting items of varying sizes on a conveyor system, ensuring gentle but firm contact.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-20S the Right Cylinder?
Select this 80 mm bore when an application requires higher thrust than a 63 mm cylinder (which provides 1559 N push at 0.5 MPa) but does not need the full 3927 N output of a 100 mm unit. The adjustable stroke is chosen over a fixed-stroke SAI when you need to dial in the exact end position during commissioning or product changeover without swapping the cylinder or adding external stops. The PT tapered port threads ensure a tight, mechanical seal for the pneumatic connection.
Because the stroke is 290 mm, the 25 mm rod needs external guiding to prevent excessive side-loading on the seals. Note that the rear adjuster acts only as a travel stop to set deceleration, not as a lock; the SAIJ does not hold loads without live air pressure, so a SAIL or BSAI variant is required for true load-holding. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ80AX290-20S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 290 mm nominal stroke by up to 20 mm, providing a usable travel window of 270 to 290 mm. It sets the end position but does not lock the load without continuous air pressure.
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