Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 55mm 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
- Stroke55 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-40S
The AirTAC SAIJ80X55-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 15-55 mm, allowing you to dial back the nominal 55 mm stroke by up to 40 mm during commissioning. It delivers a robust 2268 N pull force at 0.5 MPa, making it suitable for heavy positioning tasks.
This variant uses a SUS420J2 stainless steel piston rod for enhanced corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet supports CMSE reed and DMSE electronic switches for precise end-of-stroke detection.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 55 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 SAIJ80AX55-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×55 | 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 SAIJ80AX55-40S Is Used
Product Changeover
Dial in the exact 15-55 mm end-stop for different package sizes on a packaging line without swapping physical hardware.
Machine Setup
Fine-tune the retract position during commissioning to perfect the alignment of heavy clamps and tooling.
Variable End Stops
Adjust the effective stroke on automated machinery to accommodate varying material thicknesses on the fly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-40S the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (offering 825 N pull at 0.5 MPa) lacks the thrust for your tooling, but you want to avoid the larger 100 mm option. The adjustable stroke is selected over a fixed SAI cylinder when a machine requires variable end-stops for rapid product-size changeovers. The PT tapered port ensures a tight pneumatic seal.
When configuring your ISO 15552 replacement, match the 80 mm bore, 55 mm stroke, 40 mm adjustment, PT port thread, and -S magnet. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, select an SAIL or BSAI cylinder instead.
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 SAIJ80AX55-40S FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 40 mm from the 55 mm nominal length, providing a usable travel window of 15-55 mm to fine-tune the end position without external stops.
At 0.5 MPa it provides 2513 N of push force and 2268 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 513 kgf.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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