Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 80mm 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
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-50S
The AirTAC SAIJ80X80-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the nominal 80mm travel back by up to 50mm, yielding a 30-80mm usable positioning window. It delivers a robust 2513N push force at 0.5 MPa, making it well-suited for medium-to-heavy actuation tasks. The extruded aluminum barrel includes sensor grooves on both sides for straightforward switch placement.
This variant uses a SUS420J2 stainless steel piston rod (option A) for enhanced corrosion resistance and ships with a magnet for position detection. It is compatible with AirTAC CMSE reed switches and DMSE solid-state sensors. The PT tapered ports and integrated adjustable air cushions at both ends ensure secure plumbing and smooth end-of-stroke deceleration across its 30-800mm/s speed range.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAIJ80AX80-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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 SAIJ80AX80-50S Is Used
Variable End-Stop Setup
Dial in precise retraction distances between 30 and 80mm during machine commissioning without physically swapping the cylinder or repositioning hard stops.
Product Size Changeover
Quickly adapt actuator travel on packaging lines handling varying carton lengths by adjusting the rear stopper to match the new product dimensions.
Heavy-Duty Positioning
Leverage the 2513N push force at 0.5 MPa to move heavy pallets or fixtures, relying on the built-in air cushions to soften the end-of-stroke impact.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-50S the Right Cylinder?
Select this 80mm bore cylinder when your application requires 2513N of push force at 0.5 MPa (or 3518N at 0.7 MPa) and on-the-fly end-position tuning. If your process needs less force, stepping down to a 63mm bore yields 1559N; if you require significantly higher thrust, a 100mm bore provides 3927N. The adjustable stroke is ideal for product changeovers, allowing you to dial in the exact 30-80mm travel without adding external mechanical stops.
Because the rear adjuster acts purely as a travel stop and the air cushions manage deceleration, neither will hold a load unpowered. For true fail-safe load holding without live air pressure, consider an external rod lock or related AirTAC SAIL or BSAI clamp-lock cylinders. This SAIJ model shares the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets. To match this exact configuration for an ISO 15552 replacement, specify: 80mm bore, 80mm stroke, 50mm adjustment, PT ports, SUS420J2 rod, and a magnet for CMSE/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 SAIJ80AX80-50S FAQ
At 0.5 MPa, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. If you increase the operating pressure to 0.7 MPa, the push force rises to 3518N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from its 80mm nominal length down to as little as 30mm. This provides a 30-80mm usable travel window for fine-tuning end positions without replacing the cylinder.
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