Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 65mm 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
- Stroke65 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-20S
The AirTAC SAIJ80X65-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5 MPa. It features a SUS304 stainless steel rod and a built-in magnet for position sensing. The integrated rear adjusting screw allows you to fine-tune the retract end position, providing a usable travel window of 45-65 mm for this 65 mm nominal stroke.
This adjustable stopper is ideal for dialing in exact end positions during commissioning without adding external stops. The extruded aluminum barrel includes sensor grooves on both sides, seamlessly accepting CMSE reed and DMSE electronic solid-state switches. It supports a standard speed range of 30-800 mm/s and uses PT tapered G3/8 ports.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 65 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 SAIJ80BX65-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×65 | 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 SAIJ80BX65-20S Is Used
Machine Changeover
Quickly dial in the 45-65mm stroke window during product size changes without swapping the cylinder or adding physical shims.
End-Position Tuning
Fine-tune the retract stop during commissioning to achieve exact positioning, leveraging the 2513N thrust for firm clamping.
Sensor-Driven Stops
Utilize the integrated magnet with DMSE electronic sensors to confirm the adjusted end position in automated workflows.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-20S the Right Cylinder?
Choose this 80mm bore when you need higher thrust than a 63mm cylinder (which provides 1559N push at 0.5 MPa) but want to avoid the bulk of a 100mm unit. The 20mm adjustment window is perfect for machine setups requiring variable end-stops or product-size changeovers. For load-holding without live air pressure, note that this adjuster acts only as a travel stop, not a lock; you would need an external rod lock or a SAIL/BSAI model.
When replacing an ISO 15552 cylinder, match the 80mm bore, 65mm stroke, 20mm adjustment, PT G3/8 port, and -S magnet requirement. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Since the 25mm rod and M20x1.5 thread handle side loads well, this cylinder is robust, though any unsupported long-stroke setup still requires external guiding.
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 SAIJ80BX65-20S FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 65mm nominal stroke by up to 20mm. This creates a usable travel window of 45-65mm for fine-tuning the end position without replacing the cylinder.
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