Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-75 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 SAIJ80AX550-75
The AirTAC SAIJ80X550-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 475-550 mm usable travel window. Delivering 2513 N of push force at 0.5 MPa, it handles heavy positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides for straightforward detection integration.
This variant uses a SUS420J2 stainless steel rod for superior corrosion resistance and PT tapered port threads. The rear adjuster acts strictly as a mechanical stop to fine-tune the retract end position during commissioning without adding external stops. It is not a locking device and cannot hold a load without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-75 |
|---|---|
| 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 SAIJ80AX550-75
| 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 SAIJ80AX550-75 Is Used
Variable End-Stop Machining
Dial in the exact 475-550 mm retract position for machining operations or part variations without physically replacing the cylinder or adding external stopper blocks.
Product Changeover Setup
Quickly adjust the stroke during production line changeovers to accommodate different product sizes, using the rear screw to fine-tune the end position rapidly.
Heavy Assembly Positioning
Leverage the 2513 N push force at 0.5 MPa to move heavy pallets or sub-assemblies into place, relying on the 75 mm travel window for final alignment.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-75 the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore falls short on thrust, offering 982 N push at 0.5 MPa compared to this model's robust 2513 N. The 75 mm adjustment range is ideal for product changeovers, allowing you to dial in the exact end-stop without swapping the cylinder. For load-holding without live air, select the SAIL or BSAI series instead, as the SAIJ adjuster only sets travel limits.
As a dimensionally interchangeable ISO 15552 cylinder, it matches standard footprints while offering the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 550 mm stroke is long, the 25 mm rod and M20x1.5 thread still require an external guide to prevent excessive side-loading on the unsupported piston.
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 SAIJ80AX550-75 FAQ
The rear adjuster is a mechanical stop that lets you shorten the effective stroke from 550 mm down to 475 mm. It allows fine-tuning of the end position during setup but does not lock or hold the load without live air pressure.
It provides 2513 N of push force and 2268 N of pull force at 0.5 MPa. At the maximum operating pressure of 1.0 MPa, it delivers up to 513 kgf of push force.
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Standard models usually ship in 3-4 days.
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