Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-75S 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 SAIJ80AX550-75S
The AirTAC SAIJ80X550-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 475-550 mm usable travel window, allowing you to dial back the 550 mm nominal stroke by up to 75 mm during commissioning. This prevents the need to swap cylinders or bolt on external stops when finalizing end positions.
Delivering 4523 N of push force at 0.9 MPa, it features a SUS420J2 stainless steel rod for corrosion resistance and a -S magnet for CMSE and DMSE sensors. The extruded aluminum barrel includes sensor grooves on both sides, and the G3/8 PT ports handle the required air volume for smooth operation.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-75S |
|---|---|
| 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 SAIJ80AX550-75S
| 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 SAIJ80AX550-75S Is Used
Machine Setup & Changeover
Fine-tune the 475-550 mm travel window during line changeovers to accommodate different product sizes without replacing the cylinder.
Variable End-Stop Positioning
Adjust the retract end-position on the fly for sorting or diverter gates that need flexible stroke lengths based on package dimensions.
Heavy-Duty Clamping
Leverage the 4523 N push force at 0.9 MPa to secure large workpieces, using the rear screw to precisely set the clamp position.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-75S the Right Cylinder?
Choose this 80 mm bore when your application requires substantial force, pushing 4523 N at 0.9 MPa. If you need less force, stepping down to a 63 mm bore yields 2805 N; if you need more, a 100 mm bore provides 7068 N. The 75 mm adjustable stroke is ideal for product changeovers on a line, letting you set variable end-stops on the fly.
Since the 550 mm stroke is relatively long, an external guide is recommended to manage side loads on the 25 mm rod. Remember that the rear adjuster acts as a travel stop, not a lock; the SAIJ does not hold loads without live air. For load-holding without pressure, use an external rod lock or pilot-operated check valve. Mounting options include 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 SAIJ80AX550-75S FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 75 mm, providing a usable travel window of 475-550 mm. This allows precise end-position tuning at commissioning without external stops.
At 0.9 MPa operating pressure, the SAIJ80X550-75-S delivers 4523 N of push force and 4071 N of pull force. It operates at speeds between 30-800 mm/s.
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