Airtac SAIJ80 Adjustable Cylinder SAIJ80AX35-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX35-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 35mm 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
- Stroke35 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX35-20S
The AirTAC SAIJ80X35-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the retract end-position during commissioning. With a nominal 35 mm stroke and a 20 mm adjustment range, it provides a usable travel window of 15 to 35 mm. This bore size delivers a robust push force of 2513 N at 0.5 MPa, making it well-suited for moderate to heavy actuation tasks.
This variant includes a SUS420J2 stainless steel rod for enhanced durability against wear and minor environmental exposure. The extruded aluminum barrel features sensor grooves on both sides, and because this is the -S magnet version, it is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches for precise position detection. It uses PT tapered port threading and reaches operating speeds of 30-800 mm/s.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX35-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX35-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 35 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 SAIJ80AX35-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×35 | 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 SAIJ80AX35-20S Is Used
Machine Changeover
Dial in the exact retract position within the 15-35 mm window when switching product sizes on a packaging line, eliminating the need to swap out the entire cylinder.
End-Stop Calibration
Fine-tune the final end position during initial commissioning to perfect a pressing or clamping operation without fabricating custom external spacers.
Sensor-Ready Actuation
Leverage the integrated magnet and dual-side sensor grooves to easily mount CMSE or DMSE switches for precise position feedback in automated assemblies.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX35-20S the Right Cylinder?
Select this 80 mm bore cylinder when your application requires exact end-stop tuning without adding external physical stops. If you need less force, stepping down to a 50 mm bore yields 982 N of push force at 0.5 MPa, while moving up to a 100 mm bore provides 3927 N. Choose this adjustable-stroke SAIJ model over a fixed-stroke SAI when you anticipate needing to dial in the travel distance during machine setup or product changeovers.
For load-holding requirements without live air pressure, note that the rear adjuster on this cylinder acts only as a travel stop and does not function as a lock or brake. In such cases, consider the SAIL air-released lock or BSAI clamp-lock series instead. This SAIJ model is dimensionally interchangeable per ISO 15552 and supports a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80AX35-20S FAQ
It features a rear adjusting screw that acts as a mechanical stop, allowing you to shorten the effective stroke from its nominal 35 mm down to 15 mm. This provides a 15-35 mm adjustable travel window for fine-tuning the end position at commissioning.
At a standard 0.5 MPa operating pressure, this double-acting cylinder provides a push force of 2513 N and a pull force of 2268 N. It can deliver up to 4523 N of push force at its maximum 0.9 MPa pressure rating.
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