Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 300mm 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
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-20
The AirTAC SAIJ80X300-20 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 2513N push force at 0.5MPa and provides a usable travel window of 280 to 300mm, allowing you to dial back the nominal 300mm stroke by up to 20mm during commissioning.
This variant uses a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 300 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 SAIJ80AX300-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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 SAIJ80AX300-20 Is Used
Machine Changeover
Dial in the 280-300mm travel window on the fly to accommodate new product lengths without physically swapping cylinders on the line.
Variable End Stops
Use the rear adjusting screw to fine-tune the retract position, hitting exact mechanical endpoints during fixture setup.
Assembly Pressing
Leverage the 2513N push force at 0.5MPa to seat components, relying on the adjuster to limit travel and prevent overstroke.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-20 the Right Cylinder?
Choose this 80mm bore adjustable-stroke model when your application requires precise end-position tuning without adding external stops. If you need less force, stepping down to a 63mm bore yields 1559N at 0.5MPa. Because the 300mm stroke is substantial, always use an external guide to prevent side-loading damage to the M20x1.5 rod thread. To match this cylinder for an ISO 15552 replacement, specify bore 80, 300mm stroke, 20mm adjust, PT ports, and no magnet. For load-holding without live air pressure, select a SAIL or BSAI cylinder instead, as the SAIJ adjuster is only a travel stop, not a lock.
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 SAIJ80AX300-20 FAQ
At an operating pressure of 0.5MPa, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.9MPa, the push force increases to 4523N.
The rear adjuster acts as a mechanical stop that lets you shorten the effective travel from the nominal 300mm down to 280mm. It only sets the end position; it does not lock the load without continuous air pressure.
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