Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-20 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 SAIJ80AX500-20
The AirTAC SAIJ80X500-20 is a double-acting ISO 15552 profile cylinder engineered with a rear stroke adjuster, allowing you to fine-tune the effective travel window down to 480 mm from its 500 mm nominal length. Delivering 2513 N of push force at 0.5 MPa, it handles substantial pneumatic workloads with precision.
This variant features a SUS420J2 stainless steel rod for enhanced corrosion resistance and utilizes PT tapered port threads with a G3/8 connection. The extruded aluminum barrel incorporates sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic switches if a magnet is added later.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-20 |
|---|---|
| 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 SAIJ80AX500-20
| 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 SAIJ80AX500-20 Is Used
Variable End-Stop Tuning
Dial in the precise 480-500 mm retraction point during machine commissioning to accommodate slight variations in part dimensions without mechanical rework.
Product Size Changeover
Quickly adjust the stroke length by up to 20 mm on a packaging line when switching between different box or product sizes, minimizing downtime.
Heavy-Duty Positioning
Leverage the 2513 N push force to move heavy pallets or fixtures into a configurable final position, relying on the rear stopper for repeatable end-of-travel accuracy.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX500-20 the Right Cylinder?
Selecting this 80 mm bore over a 63 mm unit steps the thrust up from 1559 N to 2513 N at 0.5 MPa, whereas moving to a 100 mm bore yields 3927 N. The integrated 20 mm rear stopper screw is ideal for product changeovers on a line, letting you dial in the exact end position without swapping cylinders or adding external stops. Note that this adjuster acts only as a travel stop; it does not hold the load without live air, so for dead-air load holding you should specify an external rod lock or consider the SAIL series.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 500 mm stroke, 20 mm adjustment range, G3/8 PT ports, and your required mounting style. Because the 500 mm stroke is unsupported, the 25 mm rod diameter and M20x1.5 rod thread provide rigidity, but an external guide is strongly recommended to prevent excessive side loading.
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 SAIJ80AX500-20 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 can deliver up to 513 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from 500 mm down to 480 mm. This creates a 20 mm adjustable travel window for fine-tuning end positions at commissioning without altering the cylinder mount.
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