Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 290mm 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
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-30S
The AirTAC SAIJ80X290-30-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 260-290 mm usable travel window, allowing you to dial back the nominal 290 mm stroke by up to 30 mm during commissioning. Delivering 2513 N of push force at 0.5 MPa, it fits robust automation requirements perfectly.
This -S variant includes a magnet for AirTAC CMSE reed and DMSE electronic sensors, fitting the dual-side barrel grooves. The 25 mm carbon steel rod and M20x1.5 thread handle high side loads, while the PT tapered port ensures a tight pneumatic connection. The rear adjuster acts purely as a travel stop for precise end-position tuning, not as a load-holding lock.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 290 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 SAIJ80X290-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×290 | 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 SAIJ80X290-30S Is Used
Machine Changeover
Dial in the 260-290 mm travel window during product size changes, setting new end positions instantly without swapping cylinders.
End-Position Tuning
Fine-tune the retract stop to absorb mechanical tolerances during machine commissioning, ensuring precise placement without external stops.
Variable Diverters
Adjust the stroke on packaging lines to hit different push-off distances, accommodating various carton sizes on the fly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-30S the Right Cylinder?
Select this 80 mm bore cylinder when a 50 mm bore (982 N push at 0.5 MPa) lacks thrust, but a 100 mm bore (3927 N) is oversized. The 30 mm adjustment range is ideal for variable product sizes or machine changeovers, replacing the need for fixed-stroke SAI cylinders and external stop hardware. Because the nominal 290 mm stroke approaches the mid-range, always use an external guide to prevent rod side-loading on long unsupported travels.
For a true ISO 15552 replacement match, verify the 80 mm bore, 290 mm stroke, 30 mm adjustment, PT G3/8 port, and -S magnet. Remember that the rear adjuster only sets the travel end; it cannot hold a load without live air pressure. For secure load-holding without continuous air, consider the SAIL or BSAI cylinder series instead.
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 SAIJ80X290-30S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 513 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from 290 mm down to 260 mm. It only sets the end position and deceleration; it does not lock the load without live air pressure.
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