Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-100
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-100 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 SAIJ80X280-100
The AirTAC SAIJ80X280-100 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 180-280 mm usable travel window, allowing you to dial back the 280 mm nominal stroke by up to 100 mm during commissioning. Operating at 0.5 MPa, it delivers 2513 N of push force and 2268 N of pull force, while the G3/8 port and 25 mm carbon steel rod handle robust actuation tasks.
This extruded aluminum barrel design includes adjustable air cushions at both ends to manage kinetic energy. The rear adjuster acts as a travel stop for end-position tuning rather than a load-holding lock, meaning live air pressure is still required to maintain position. For true load holding without air, the related SAIL or BSAI series would be required.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-100 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-100 |
|---|---|
| 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 SAIJ80X280-100
| 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 SAIJ80X280-100 Is Used
Variable End-Stop Tuning
Dial in the exact retract distance between 180 and 280 mm during machine commissioning to accommodate different material thicknesses without changing the cylinder.
Product Size Changeover
Quickly adjust the stroke stop on packaging or conveying lines when switching to a new product format, reducing downtime and avoiding external stop hardware.
High-Force Positioning
Leverage the 2513 N push force at 0.5 MPa to move heavy jigs into a precisely tuned end position, relying on the 25 mm rod for structural stability.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-100 the Right Cylinder?
Choose this 80 mm bore when an application requires higher thrust than a 63 mm cylinder (1559 N push at 0.5 MPa) but does not need the full 3927 N push force of a 100 mm unit. The 100 mm adjustment range is ideal for machines processing varying product sizes, letting operators fine-tune the retract end-stop without swapping hardware or adding external stops. The 25 mm rod and M20x1.5 thread provide strong resistance to side loads, but with a 280 mm stroke, an external guide is still recommended to prevent rod wear.
When ordering, confirm the PT tapered port threads, the standard carbon steel rod material, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), which omits the FB, CA, CB, and CR brackets. Because no magnet is specified, this configuration will not work with AirTAC CMSE or DMSE sensors.
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 SAIJ80X280-100 FAQ
At 0.5 MPa, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.7 MPa, the push force increases to 3518 N. The operational speed range is 30-800 mm/s.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the 280 mm nominal stroke down to as little as 180 mm. It sets the end position but does not lock the load; live air pressure is still required to hold position.
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