Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 550mm 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
- Stroke550 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-50
The AirTAC SAIJ80X550-50 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 500 to 550 mm, allowing you to dial back the nominal stroke by up to 50 mm during commissioning without needing external stops. Delivering a robust 2513 N push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance.
This 80 mm bore profile cylinder uses a G3/8 port and achieves a maximum speed of 800 mm/s. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU omits the magnet, so it is not switch-ready out of the box. The rear adjuster acts purely as a mechanical stop to set the end position; it does not lock the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 550 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 SAIJ80BX550-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×550 | 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 SAIJ80BX550-50 Is Used
Machine Changeover
Dial in the exact 500 to 550 mm end-stop during product size changeovers without swapping cylinders or adding external mechanical stops.
Variable End Positioning
Fine-tune the retract position on the fly to accommodate varying package lengths on a packaging or sorting line.
Long-Stroke Assembly
Leverage the 2513 N push force and 550 mm travel to drive long-stroke pressing or joining operations with precise end-position tuning.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-50 the Right Cylinder?
Choose this 80 mm bore adjustable cylinder when your application requires 2513 N of push force at 0.5 MPa, or 3518 N at 0.7 MPa. If your process needs less force, stepping down to a 63 mm bore yields 1559 N at 0.5 MPa, whereas a 100 mm bore provides 3927 N for heavier loads. The adjustable stroke is ideal for machine setups requiring variable end-stops or product-size changeovers, offering far more flexibility than a fixed-stroke SAI cylinder.
Because the 550 mm stroke is substantial, the 25 mm rod diameter and M20x1.5 rod thread provide rigidity, but an external guide is still recommended to handle side loads over this long travel distance. For exact ISO 15552 replacement matching, configure with an 80 mm bore, 550 mm stroke, 50 mm adjustment, PT tapered port, and no magnet. If your machine requires holding the load without live air, use an AirTAC SAIL pneumatic lock or BSAI clamp-lock cylinder instead, as the SAIJ adjuster is only a travel stop. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80BX550-50 FAQ
At 0.5 MPa operating pressure, the 80 mm bore provides 2513 N of push force and 2268 N of pull force. If you increase the pressure to 0.7 MPa, the push force rises to 3518 N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from 550 mm down to 500 mm. It fine-tunes the end position at commissioning but does not lock or hold the load without continuous air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-50
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.