Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 280mm 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
- Stroke280 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-30
The AirTAC SAIJ80X280-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5 MPa. Its integrated PT G3/8 ports and 25mm carbon steel rod provide robust performance for demanding pneumatic setups. By utilizing an extruded aluminum barrel with sensor grooves on both sides, it ensures rigid, reliable operation without tie-rods.
This specific SKU features a 280mm nominal stroke that can be fine-tuned down by up to 30mm, creating a precise 250-280mm usable travel window. The rear mechanical stopper allows you to dial in the exact end position during commissioning without adding external stops. For position feedback, the barrel grooves readily accept AirTAC CMSE reed or DMSE electronic sensors if a magnet is specified later.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 280 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 SAIJ80X280-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×280 | 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 SAIJ80X280-30 Is Used
Product Changeovers
Quickly dial the stroke back by up to 30mm when switching between product sizes on a packaging line, avoiding the need to physically swap out the entire cylinder.
End-Position Tuning
Fine-tune the exact 250-280mm travel limit during machine commissioning to perfect the seating force of a press or clamping operation.
Variable Diverting
Adjust the retract distance of a diverter arm on the fly to accommodate different package widths moving down a material handling conveyor.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-30 the Right Cylinder?
Select this 80mm bore when an application requires substantial thrust, such as the 2513N push or 2268N pull force available at 0.5 MPa. If your setup needs less force, stepping down to a 63mm bore yields 1559N push force; stepping up to a 100mm bore provides 3927N. Because the stroke is 280mm, the 25mm rod and M20x1.5 thread handle side loads well, but an external guide is recommended for any unsupported overhung loads.
Choose the SAIJ adjustable format over a fixed SAI cylinder when your machine requires product-size changeovers or variable end-stops. The rear adjuster acts strictly as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider a SAIL locking cylinder or an external rod lock. This model uses the standard SAIJ mounting subset (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets.
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 SAIJ80X280-30 FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N 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 that lets you trim the effective stroke back by up to 30mm, providing a usable travel window between 250mm and 280mm. It only sets the travel end and does not lock the load without continuous air pressure.
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