Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 80mm 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
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-50
The AirTAC SAIJ80X80-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 80 mm stroke by up to 50 mm. This creates a highly versatile usable travel window of 30 to 80 mm, letting you fine-tune the retract end position at commissioning without swapping out the physical cylinder. Delivering a robust 2513 N of push force at 0.5 MPa, it handles demanding positioning tasks with ease.
This unit features a SUS304 stainless steel rod for superior corrosion resistance and utilizes PT tapered port threading. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting, while the adjustable rear stopper acts purely as a travel end-limit and does not hold the load without continuous air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAIJ80BX80-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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 SAIJ80BX80-50 Is Used
Variable End-Stop Tuning
Dial in the exact retract distance between 30 and 80 mm during machine commissioning to accommodate different product sizes without changing the cylinder.
Product Changeover
Rapidly adjust the effective stroke on automated lines when switching to a new package format, relying on the rear stopper screw rather than external fixtures.
Fine Positioning Control
Use the 2513 N thrust at 0.5 MPa to push parts accurately into a fixture, tweaking the final position by fractions of a millimeter via the rear adjuster.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-50 the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (offering 982 N push at 0.5 MPa) lacks the necessary thrust for your application. The SAIJ80X80-50 is selected specifically when the final end-of-stroke position varies between product runs, using the integrated rear screw to establish a new retract stop instead of machining external stop collars. Because the nominal 80 mm stroke is short, side-loading is minimal, but the 25 mm rod and M20x1.5 thread provide excellent rigidity for any off-center loads.
When matching this ISO 15552 cylinder for a replacement, verify the 80 mm nominal stroke, 50 mm adjuster code, PT port thread, and the required mounting interface from the available SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that the FB, CA, CB, and CR mounts are omitted from this adjustable series. If your machine requires the load to be held mechanically without live air, this cylinder's adjuster will not suffice; consider an AirTAC SAIL or BSAI locking cylinder instead.
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 SAIJ80BX80-50 FAQ
At an operating pressure of 0.5 MPa, the SAIJ80X80-50 double-acting cylinder generates 2513 N of push force and 2268 N of pull force. At the maximum pressure of 1.0 MPa, it delivers up to 513 kgf.
The rear adjuster screw allows you to shorten the nominal 80 mm stroke by up to 50 mm, creating a usable travel window of 30 to 80 mm. This stopper only limits the travel end and does not lock the load without live air pressure.
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