Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-50S 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 SAIJ80BX65-50S
The AirTAC SAIJ80X65-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a usable travel window of 15 to 65 mm. Delivering 2513 N of push force at 0.5 MPa, it provides substantial thrust for mid-weight handling while allowing fine end-position tuning without swapping the cylinder or bolting on external stops.
This variant is equipped with a SUS304 stainless steel rod for corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. It uses PT tapered ports and retains the standard extruded aluminum barrel with sensor grooves on both sides. The rear adjuster acts as a travel stop to set the retract position, but it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-50S |
|---|---|
| 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 SAIJ80BX65-50S
| 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 SAIJ80BX65-50S Is Used
Variable End-Stop Positioning
Dial in the retract distance from 15 to 65 mm during machine setup to accommodate varying product sizes without changing hardware.
Commissioning Stroke Tuning
Fine-tune the final end position at machine startup to correct for mechanical tolerances without installing external stopper blocks.
Product Changeover Diverter
Adjust the actuation length on the fly when switching between different package dimensions on a conveyor sorting line.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-50S the Right Cylinder?
Choose this 80 mm bore when 50 mm bore thrust (982 N at 0.5 MPa) is insufficient and you need a robust variable end-stop for product changeovers. The adjustable stroke is ideal for commissioning fine-tune adjustments on automated lines. If the application requires the load to be held without live air pressure, a plain SAIJ is insufficient; you should select an SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead.
For an exact ISO 15552 replacement, match the 80 mm bore, 65 mm nominal stroke, 50 mm adjustment range, PT port thread, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR styles found in other 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 SAIJ80BX65-50S 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 allows you to shorten the effective travel by up to 50 mm, creating a usable stroke window of 15 to 65 mm. This stopper sets the travel end but does not lock or hold the load without continuous air pressure.
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