Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-30
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX550-30 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke550 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-30
The AirTAC SAIJ80X550-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 520-550 mm usable travel window, allowing you to dial back the nominal 550 mm stroke by up to 30 mm during commissioning.
This variant is built with a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE or DMSE switches if a magnet is added later. Note that the rear adjuster acts purely as a mechanical stop and does not hold the load without continuous air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-30 |
|---|---|
| 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-30
| 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 SAIJ80BX550-30 Is Used
Product Changeover
Quickly fine-tune the 520-550 mm travel endpoint on packaging lines when switching to different carton sizes, bypassing the need to physically swap out cylinders.
Machine Setup Calibration
Dial in the exact retract position during initial commissioning, using the 30 mm rear adjustment window to perfect tooling alignment without adding external mechanical stops.
Variable End-Stop Forming
Adapt the stroke endpoint on the fly for automated metal-forming or bending equipment, ensuring precise material positioning across different production runs.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-30 the Right Cylinder?
If you need less force, stepping down to a 63 mm bore yields 1559 N; stepping up to a 100 mm bore provides 3927 N. The adjustable 520-550 mm window is perfect for product changeovers, whereas a fixed SAI cylinder locks you into a single 550 mm dimension.
Because the 550 mm stroke is relatively long, the 25 mm rod should be paired with an external guide to prevent excessive side-loading and premature seal wear. For any load-holding requirements without live air pressure, this cylinder is insufficient—the adjuster is a stop, not a lock—so you should explore an AirTAC SAIL or BSAI model instead. Mounting options are limited to 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 SAIJ80BX550-30 FAQ
At a maximum 1.0 MPa, the push force reaches 513 kgf.
The rear adjuster screw allows you to shorten the effective travel from the nominal 550 mm down to as little as 520 mm. This creates a 30 mm tuning window for precise end-positioning at commissioning, but it functions only as a travel stop and does not lock the load without air pressure.
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