Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-20 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 SAIJ80BX65-20
The AirTAC SAIJ80X65-20 is a double-acting ISO 15552 profile cylinder equipped with a rear mechanical stroke adjuster. It provides a nominal 65mm stroke that can be dialed back by up to 20mm, yielding a usable travel window of 45-65mm. This built-in adjustability allows operators to fine-tune end positions at commissioning or during product changeovers without swapping out the entire actuator or adding external stops.
Delivering 2513N of push force and 2268N of pull force at 0.5MPa, this 80mm bore model is built for demanding work. It features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-20 |
|---|---|
| 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 SAIJ80BX65-20
| 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 SAIJ80BX65-20 Is Used
Machine Changeovers
Dial in the 45-65mm travel window during product family changeovers to set precise end positions without re-mounting hardware.
Variable End Stops
Adjust the retract stop on the fly to handle varying package sizes or pusher distances on a single conveyor line.
Commissioning Tuning
Fine-tune the final end position during machine setup to perfect a clamping or pressing operation within the 20mm range.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-20 the Right Cylinder?
Select this 80mm bore actuator when an application requires substantial thrust—2513N at 0.5MPa or up to 4523N at 0.9MPa—combined with variable end-stops. If your process demands less force, stepping down to a 63mm bore yields 1559N at 0.5MPa, while moving up to a 100mm bore provides 3927N. Choose this adjustable-stroke SAIJ variant over a fixed-stroke SAI cylinder when you need on-the-fly travel tuning to accommodate different product sizes on the same line.
Because the rear adjuster functions strictly as a travel stop and not a locking device, it cannot hold a load without live air pressure. For fail-safe load holding without continuous air supply, consider an AirTAC SAIL (air-released lock) or BSAI (clamp-lock) cylinder, or utilize an external rod lock. This SKU is dimensionally interchangeable with ISO 15552 cylinders and is configured with a PT port, SUS304 rod material, and no magnet (-S not specified).
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 SAIJ80BX65-20 FAQ
At 0.5MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.9MPa, the push force increases to 4523N.
The SAIJ80X65-20 has a nominal 65mm stroke with a rear adjuster screw that allows you to shorten the effective travel by up to 20mm. This creates a usable stroke window of 45-65mm, enabling fine-tuning of the end position without external stops.
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