Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 180mm 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
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-75
The AirTAC SAIJ80X180-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to shorten the effective travel. With a nominal 180 mm stroke and a 75 mm adjustment range, it provides a usable travel window of 105-180 mm. This bore size delivers 2513 N of pull force at 0.5 MPa, making it robust enough for heavy positioning tasks.
The external rear stopper acts purely as a travel end-stop to fine-tune the retract position during commissioning; it is not a lock and cannot hold the load without live air pressure. For load-holding without continuous air, consider the SAIL or BSAI series. This unit uses a PT tapered port and a 25 mm carbon steel rod, which handles side loads well, though long unsupported strokes still require an external guide.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 180 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 SAIJ80X180-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×180 | 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 SAIJ80X180-75 Is Used
End-Position Tuning
Dial in the exact retract distance within the 105-180 mm window during machine setup without adding external mechanical stops.
Product Changeover
Quickly adjust the stroke end-stop on a packaging line to accommodate varying product sizes on the fly.
Heavy-Duty Positioning
Leverage the 2513 N pull force to move heavy actuators or clamps into precise operational positions.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-75 the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (982 N push at 0.5 MPa) is too weak, but a 100 mm bore (3927 N push) provides unnecessary excess force. The adjustable stroke is selected over a fixed SAI cylinder when you need variable end-stops for machine changeovers or product-size adjustments without physically swapping the cylinder or adding external stops.
When matching an ISO 15552 replacement, verify the 80 mm bore, 180 mm stroke, 75 mm adjustment, PT G3/8 port, and the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the rod diameter is 25 mm with an M20x1.5 thread, it carries high side-load capacity, but external guiding is still recommended for maximum cylinder longevity.
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 SAIJ80X180-75 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of pull force and 2513 N of push force. At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster screw lets you shorten the 180 mm nominal stroke by up to 75 mm, creating a usable travel window of 105-180 mm. This allows precise end-position tuning at commissioning without replacing the cylinder.
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