Airtac SAIJ80 Adjustable Cylinder SAIJ80X20-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X20-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 20mm 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
- Stroke20 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X20-20S
The AirTAC SAIJ80X20-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the nominal 20 mm stroke by up to 20 mm. This creates a highly flexible 0-20 mm usable travel window, allowing operators to fine-tune the retract end-position during commissioning without swapping hardware. Delivering a push force of 2513 N at 0.5 MPa, it is built for robust actuation.
This variant features a carbon steel piston rod and a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet enables precise position detection using AirTAC CMSE reed or DMSE electronic solid-state switches. It utilizes a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and relies on variable air cushions at both ends to manage deceleration.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X20-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X20-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 20 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 SAIJ80X20-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×20 | 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 SAIJ80X20-20S Is Used
Short-Stroke Calibration
Ideal for pressing or clamping stations where the 0-20 mm adjustable window allows operators to dial in the exact contact distance on the fly without changing the cylinder.
Machine Changeover
Perfect for packaging lines that run multiple product sizes, letting technicians quickly reposition the retract end-stop during format changes using the rear adjuster.
Precision End-Positioning
Provides high-force 2513 N actuation for assembly fixtures where hitting a precise, variable mechanical stop is more critical than a fixed full-stroke extension.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X20-20S the Right Cylinder?
Choose this 80 mm bore when an application demands substantial thrust—such as the 2513 N push force at 0.5 MPa—but requires exacting end-position calibration that a fixed-stroke SAI cannot provide. If your process needs less force, stepping down to a 63 mm bore yields 1559 N; if you need more, a 100 mm bore offers 3927 N. The rear adjuster acts solely as a mechanical stop to set the travel limit, meaning it cannot hold a load dynamically without continuous live air pressure.
For load-holding requirements without constant air supply, consider the SAIL pneumatic lock or BSAI clamp-lock series instead. To match this exact ISO 15552 replacement, specify: 80 mm bore, 20 mm stroke, 20 mm adjustment range, PT port threads, the required SAIJ mounting accessory, and the -S magnet option for CMSE / DMSE sensor compatibility.
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 SAIJ80X20-20S FAQ
The nominal stroke is 20 mm, but the external rear adjuster screw allows you to shorten the effective travel by up to 20 mm. This creates a 0-20 mm usable travel window, letting you fine-tune the retract end-position at commissioning without adding external stops.
At 0.5 MPa operating pressure, it provides a push force of 2513 N and a pull force of 2268 N. At the maximum operating pressure of 1.0 MPa, the push force reaches 5026 N.
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