Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-20S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX140-20S 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 SAIJ80BX140-20S
The AirTAC SAIJ80X140-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the effective travel back by up to 20 mm. This creates a precise 120-140 mm usable window, allowing you to fine-tune the retract end-position at commissioning without adding external stops.
Built for harsh or washdown environments, this variant uses a SUS304 stainless steel rod (option B) and PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet works seamlessly with AirTAC CMSE reed and DMSE solid-state switches for exact position feedback.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-20S |
|---|---|
| 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 SAIJ80BX140-20S
| 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 SAIJ80BX140-20S Is Used
Product Changeover
Dial in the 120-140 mm travel window during packaging size transitions to set new retract positions without physically swapping the cylinder.
Machine Setup
Use the rear stopper screw to fine-tune the end position during initial commissioning, eliminating the need to fabricate custom external shims.
Washdown Actuation
Leverage the SUS304 stainless steel rod for corrosion resistance in food processing or chemical handling machinery requiring frequent washdowns.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-20S the Right Cylinder?
The adjustable stroke is ideal for product-size changeovers on a line, letting you shift the end-stop without swapping the entire cylinder. Remember that the rear adjuster is a travel stop, not a lock; the SAIJ does not hold loads without live air. For fail-safe load holding, consider an AirTAC SAIL or BSAI cylinder.
To match this ISO 15552 interchangeable profile cylinder exactly, specify an 80 mm bore, 140 mm stroke, 20 mm adjustment range, PT ports, and the -S magnet option. It supports a mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2. The 25 mm rod and M20x1.5 thread provide excellent rigidity, though even with a robust rod, any stroke over 300 mm would require an external guide to prevent side-loading damage.
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 SAIJ80BX140-20S FAQ
At the maximum pressure of 1.0 MPa, it can deliver up to 513 kgf.
The rear adjuster screw acts as a mechanical stop that shortens the 140 mm nominal stroke by up to 20 mm, providing a usable travel window of 120 to 140 mm. It sets the end position but does not lock the load without continuous air pressure.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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