Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-20S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX140-20S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke140 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-20S
The AirTAC SAIJ80X140-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 20 mm. This creates a precise 120-140 mm usable stroke window, letting you dial in the exact end position during commissioning without adding external stops. It delivers a robust 2268 N pull force at 0.5 MPa, making it well-suited for heavy manipulation tasks.
This variant includes an SUS420J2 stainless steel rod (option A) for improved corrosion resistance and carries the -S magnet option for position sensing. It is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches, which mount cleanly into the dual-side sensor grooves on the extruded aluminum barrel. The SAIJ mounting set omits FB, CA, CB, and CR brackets, focusing instead on Basic, FA, LB, TC, FTC, TCM1, and TCM2 interfaces.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-20S |
|---|---|
| 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-20S
| 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 SAIJ80AX140-20S Is Used
Machine Changeovers
Fine-tune the 120-140 mm travel window during product size transitions on a packaging line without swapping out the entire cylinder assembly.
End-Stop Calibration
Use the 20 mm rear adjuster screw to precisely set the retract position for a machining operation, ensuring perfect alignment without external jigs.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-20S the Right Cylinder?
The adjustable stroke is ideal for machine changeovers where product sizes vary slightly, allowing you to reposition the retract end-stop on the fly. Because the 140 mm stroke is relatively short, side-loading is less of a concern, but always ensure the load is guided to prevent rod binding.
When matching ISO 15552 dimensions for a replacement, verify the 80 mm bore, 140 mm stroke, 20 mm adjustment, PT tapered G3/8 port, and the -S magnet. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true fail-safe load holding without pressure, consider an AirTAC SAIL pneumatic lock or BSAI clamp-lock cylinder instead of relying on the cushion or adjuster.
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 SAIJ80AX140-20S FAQ
At an operating pressure of 0.5 MPa, this 80 mm bore cylinder provides a push (extend) force of 2513 N and a pull (retract) force of 2268 N. At 0.9 MPa, the push force increases to 4523 N.
The rear adjuster screw acts as a mechanical stop that can shorten the nominal 140 mm stroke by up to 20 mm, giving you a usable travel window of 120 to 140 mm. It allows for fine-tuning the end position at commissioning but does not lock or hold the load without continuous air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.