Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 140mm 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
- Stroke140 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-40S
The AirTAC SAIJ80X140-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 140 mm stroke that can be fine-tuned down by up to 40 mm, giving you a precise 100-140 mm usable travel window during commissioning. Delivering 2513 N of push force at 0.5 MPa, it handles substantial pneumatic workloads with ease.
This variant includes a magnet for position sensing and uses a standard carbon steel rod with PT tapered ports. The extruded aluminum barrel features sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. It supports a reduced set of ISO 15552 mountings—Basic, FA, LB, TC, FTC, TCM1, and TCM2—omitting FB, CA, CB, and CR options.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 140 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 SAIJ80X140-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×140 | 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 SAIJ80X140-40S Is Used
Product Changeover
Dial in the 100-140 mm travel window during format changes on a packaging line, avoiding the need to swap out the entire cylinder for a different fixed stroke.
Machine Setup
Fine-tune the exact end-of-stroke position at commissioning to perfect the pressing force, using the rear stopper to dial in the final millimeters of travel.
Variable End Stops
Accommodate varying package sizes on a conveyor diverter by adjusting the retract distance up to 40 mm, ensuring precise routing without mechanical rebuilds.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-40S the Right Cylinder?
Select this 80 mm bore cylinder when an application requires high force (2513 N push at 0.5 MPa) alongside variable end-stop positioning. If you need less thrust, stepping down to a 63 mm bore yields 1559 N; if you require more, a 100 mm bore provides 3927 N. The adjustable stroke is chosen over a fixed SAI cylinder when you need to trim the retract position on the fly for product changeovers without adding external stops. For any stroke of 300 mm or more, always use an external guide to support the load and prevent excessive rod side-loading.
The rear screw acts purely as a travel stop and works with the adjustable air cushions to decelerate the load; it does not hold the position without live air. For load-holding without continuous pneumatic pressure, consider an AirTAC SAIL locking cylinder or BSAI clamp-lock variant. To match this cylinder exactly for an ISO 15552 replacement, specify: 80 mm bore, 140 mm stroke, 40 mm adjustment, PT ports, a -S magnet, and your required mounting from the SAIJ subset.
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 SAIJ80X140-40S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster screw allows you to shorten the effective stroke by up to 40 mm. This creates a usable travel window of 100-140 mm from the 140 mm nominal stroke, enabling fine-tuning of the end position without changing the cylinder.
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