Airtac SAIJ80 Adjustable Cylinder SAIJ80AX145-20S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX145-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 145mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke145 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 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 SAIJ80 Adjustable Cylinder SAIJ80AX145-20S
The AirTAC SAIJ80X145-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the end position during commissioning. It provides a usable travel window of 125-145 mm, giving you precise control over the retract distance without needing external stops.
This variant features a SUS420J2 stainless steel rod for superior corrosion resistance and includes an integrated magnet for position sensing. The extruded aluminum barrel incorporates sensor grooves on both sides, enabling quick mounting of CMSE reed or DMSE electronic switches. It uses a G3/8 port and includes adjustable air cushions at both ends to manage deceleration.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX145-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX145-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 145 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX145-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×145 | 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 SAIJ80AX145-20S Is Used
Machine Changeover
Dial in the exact 125-145 mm retract position during product size transitions without swapping out the entire cylinder or adding physical shims.
End-Stop Calibration
Fine-tune the final end-position at commissioning using the rear adjuster screw to perfect the timing of a critical assembly process.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX145-20S the Right Cylinder?
Choose this 80 mm bore when you need higher thrust than a 63 mm cylinder (which provides 1559 N at 0.5 MPa) but want to avoid the heavier footprint of a 100 mm unit. The adjustable stroke is ideal for machine setups requiring variable end-stops or product changeovers, functioning as a travel stop rather than a load-holding lock. For applications needing true position holding without live air pressure, consider an AirTAC SAIL or BSAI series cylinder instead.
To replace this ISO 15552 cylinder, match the 80 mm bore, 145 mm nominal stroke, 20 mm adjustment range, PT G3/8 port, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, intentionally omitting FB, CA, CB, and CR brackets. The 25 mm piston rod and M20x1.5 thread offer excellent rigidity, though any application approaching the maximum stroke length should use an external guide to prevent side-loading damage.
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 SAIJ80AX145-20S FAQ
It operates at speeds between 30 and 800 mm/s.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke by up to 20 mm, creating a usable travel window of 125 to 145 mm. It only sets the travel end and does not hold the load without live air pressure.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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