Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-30S 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 SAIJ80BX550-30S
The AirTAC SAIJ80X550-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 520 to 550 mm usable travel window. Delivering 4523 N of push force at 0.9 MPa, it integrates a SUS304 stainless steel rod for superior corrosion resistance and handles speeds of 30-800 mm/s.
This model includes a magnetic piston (-S) for direct positioning feedback via AirTAC CMSE reed or DMSE electronic sensors. The extruded aluminum barrel retains standard ISO 15552 mounting dimensions, allowing seamless interchangeability with other ISO cylinders without relying on tie-rod construction.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-30S |
|---|---|
| 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 SAIJ80BX550-30S
| 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 SAIJ80BX550-30S Is Used
Machine Changeover
Fine-tune the 520-550 mm retract position on the fly when switching between product sizes on a packaging line.
Diversion Gates
Adjusts the exact end-stop for pneumatic routing flaps without needing to physically swap out the entire cylinder.
Press Positioning
Dials in the precise lower dead center for light assembly presses, accommodating material thickness variations.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-30S the Right Cylinder?
Choose this 80 mm bore when an application requires substantial thrust, such as 4523 N push force at 0.9 MPa, stepping up from a 63 mm bore that provides 2805 N. The 30 mm rear adjustment screw is perfect for dialing in exact retract end positions during machine commissioning or product changeovers without adding external stops. If your process requires holding a load without continuous air pressure, note that this adjuster acts only as a travel stop; you should specify an SAIL pneumatic lock or an external rod lock instead.
Because the 550 mm stroke is relatively long, the 25 mm rod diameter and M20x1.5 rod thread provide robust support, but an external guide is strongly recommended to prevent excessive side-loading. To match this ISO 15552 replacement exactly, specify the 80 mm bore, 550 mm stroke, PT tapered port threads, and the -S magnet option.
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 SAIJ80BX550-30S FAQ
The rear adjuster screw allows you to shorten the nominal 550 mm stroke by up to 30 mm, creating a 520-550 mm travel window. It functions as a physical stop to set the end position and does not lock the load without live air pressure.
At 0.9 MPa, the SAIJ80X550-30-S generates 4523 N of push force and 4071 N of pull force. It operates at speeds between 30 and 800 mm/s.
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