Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-20S 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 SAIJ80AX500-20S
The AirTAC SAIJ80X500-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 480 to 500 mm. Delivering 2513 N of push force at 0.5 MPa, it integrates a SUS420J2 stainless steel rod for superior side-load resistance and corrosion defense. The PT tapered port threads ensure a high-integrity pneumatic seal.
Because the 500 mm stroke is substantial, the 25 mm rod diameter and M20x1.5 thread provide vital rigidity, though an external guide remains essential for unsupported loads. The integrated magnet supports CMSE reed and DMSE electronic sensors, fitting directly into the dual-side barrel grooves for precise position verification.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-20S |
|---|---|
| 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 SAIJ80AX500-20S
| 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 SAIJ80AX500-20S Is Used
Machine Changeover
Dial in the exact 480-500 mm end-stop during product size transitions without physically replacing the cylinder or reworking hard stops.
Material Push-off
Utilizes 2513 N of thrust at 0.5 MPa to reliably push heavy pallets or totes off a conveyor line, with fine-tuning for varying package depths.
Assembly Pressing
Applies the 80 mm bore's substantial push force to seat large components, using the rear screw to precisely dial back the final 20 mm of travel.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-20S the Right Cylinder?
Choose this 80 mm bore when 50 mm (982 N at 0.5 MPa) lacks power but 100 mm (3927 N) is oversized. The 20 mm rear adjuster allows you to fine-tune the retract end-position during commissioning or product changeovers without swapping cylinders or adding external stops. For a direct ISO 15552 replacement, match the 80 mm bore, 500 mm stroke, 20 mm adjustment, PT G3/8 port, SUS420J2 (A) rod, and -S magnet.
Given the 500 mm travel, you must use an external guide to prevent rod bending under heavy side loads. Note that the rear adjuster acts strictly as a travel stop, not a lock; it cannot hold the load without live air pressure. For fail-safe load holding, consider the SAIL or BSAI series.
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 SAIJ80AX500-20S 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 the maximum 1.0 MPa pressure, it delivers up to 513 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the nominal 500 mm down to 480 mm. This allows precise end-position tuning during commissioning without adding external stops, though it does not lock the load without air pressure.
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