Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-40S 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 SAIJ80AX500-40S
The AirTAC SAIJ80X500-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features an 80 mm bore that generates 2513 N of push force at 0.5 MPa and includes a SUS420J2 stainless steel rod for improved corrosion resistance. By turning the external rear stopper screw, you can trim the effective travel within a 460-500 mm window, enabling precise end-position tuning at commissioning without swapping the cylinder.
This adjustable-stroke model retains the standard extruded aluminum barrel with sensor grooves on both sides. The integrated magnet (-S) supports position detection using AirTAC CMSE reed or DMSE electronic solid-state switches. The rear adjuster acts strictly as a travel stop to set deceleration limits and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-40S |
|---|---|
| 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 SAIJ80AX500-40S
| 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 SAIJ80AX500-40S Is Used
Variable End-Stop Positioning
Dial in the exact retract distance within the 460-500 mm window during machine setup, accommodating different product sizes without adding external stopper blocks.
Product Changeover
Quickly adjust the stroke end-position on packaging or conveying lines to handle varying package lengths, reducing downtime between production runs.
Heavy-Duty Forming
Leverage the 2513 N push force at 0.5 MPa for pressing or forming operations while using the rear screw to fine-tune the final tooling position.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-40S the Right Cylinder?
Select this 80 mm bore cylinder when an application requires substantial thrust—such as 2513 N push or 2268 N pull at 0.5 MPa—combined with variable end-stop positioning. If your setup needs less force, stepping down to a 63 mm bore yields 1559 N push force. Conversely, heavier payloads requiring 3927 N push would warrant moving up to a 100 mm bore. The 40 mm adjustment window is ideal for product changeovers on a line, allowing you to fine-tune the retract distance rather than relying on a fixed-stroke SAI cylinder.
Because the 500 mm stroke is long, the 25 mm rod diameter and M20x1.5 rod thread provide robust support, but an external guide is still recommended to prevent excessive side-loading on the piston. To replace this cylinder with an ISO 15552 equivalent, match the 80 mm bore, 500 mm stroke, 40 mm adjustment, PT tapered port threads, and the -S magnet. For applications requiring the load to be held mechanically without continuous air pressure, consider an AirTAC SAIL or BSAI locking cylinder instead.
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 SAIJ80AX500-40S 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 allows you to shorten the nominal 500 mm stroke by up to 40 mm, creating a usable travel window of 460 to 500 mm. The adjuster 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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