Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 500mm 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
- Stroke500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-50S
The AirTAC SAIJ80X500-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 450 to 500 mm for precise end-position tuning. It delivers a robust 4523 N push force at 0.9 MPa, utilizing a G3/8 port and a 36 mm cushion to manage high kinetic energy. This unit includes a magnetic piston (-S) for position detection and a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance.
Because the stroke extends to 500 mm, the 25 mm rod diameter should be paired with an external guide to prevent excessive side-loading on the piston. The rear adjuster acts purely as a mechanical stop to dial in the retract position during commissioning; it does not lock the load without live air pressure. For load-holding requirements without continuous air, an external rod lock or the AirTAC SAIL series is recommended.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 500 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 SAIJ80AX500-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×500 | 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 SAIJ80AX500-50S Is Used
Product Changeovers
Dial in the 450-500 mm retract window during format changes without physically swapping the cylinder or repositioning hard stops.
End-Stop Tuning
Fine-tune the final retract position at commissioning to achieve exact alignment without adding external mechanical shims.
Long-Stroke Handling
Move heavy jigs with 4523 N of push force at 0.9 MPa while relying on the 36 mm cushion to absorb end-of-stroke impact.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-50S the Right Cylinder?
Select this 80 mm bore when an application requires more thrust than a 63 mm cylinder (which provides 2805 N push at 0.9 MPa) but does not need the full 7068 N push force of a 100 mm unit. The 50 mm adjustment range is ideal for product changeovers on a line, allowing operators to fine-tune the retract distance without swapping cylinders or adding external stops. To replace an ISO 15552 cylinder, match the 80 mm bore, 500 mm stroke, G3/8 PT ports, and the desired mounting from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). The integrated -S magnet supports AirTAC CMSE reed and DMSE electronic sensors.
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 SAIJ80AX500-50S FAQ
At an operating pressure of 0.9 MPa, this 80 mm bore cylinder generates a push force of 4523 N and a pull force of 4071 N. It can reach a maximum push force of 513 kgf at 1.0 MPa.
The rear adjuster allows you to shorten the effective stroke by up to 50 mm, creating a usable travel window of 450 to 500 mm. It acts as a mechanical stop to set the end position and does not function as a lock to hold the load without air pressure.
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