Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-30S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX140-30S 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 SAIJ80BX140-30S
The AirTAC SAIJ80X140-30-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. The integrated -S magnet enables precise position detection with AirTAC CMSE reed and DMSE electronic sensors.
By turning the external rear stopper, you can trim the effective travel by up to 30mm, creating a 110-140mm usable window. This mechanism allows for fine end-position tuning during commissioning without swapping the cylinder or adding external stops. The adjuster acts purely as a travel stop and does not lock the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-30S |
|---|---|
| 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 SAIJ80BX140-30S
| 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 SAIJ80BX140-30S Is Used
Machine Changeover
Dial in the 110-140mm travel window during product size changes to set new end positions rapidly without mechanical disassembly.
End-Stop Tuning
Fine-tune the retract position at commissioning using the rear screw, avoiding the need to bolt on external physical stops.
Variable Positioning
Handle varying package sizes on a line by adjusting the cylinder stroke up to 30mm to accommodate different push-off distances.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-30S the Right Cylinder?
Choose this 80mm bore when an application requires higher thrust than a 63mm cylinder (1559N at 0.5MPa) but less than a 100mm bore (3927N at 0.5MPa). The adjustable 110-140mm stroke is ideal for product changeovers on a packaging line, whereas a fixed SAI cylinder would require physical shims. For direct replacements, match the 80mm bore, 140mm nominal stroke, PT tapered port, and -S magnet.
Although the 25mm SUS304 rod handles side loads well, any stroke approaching or exceeding 300mm requires an external guide to prevent rod bending. Remember that the rear adjuster only sets the travel end; for dead-load holding without live air, select an SAIL pneumatic lock or BSAI clamp-lock cylinder. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB, CA, CB, and CR.
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 SAIJ80BX140-30S FAQ
At 0.7MPa, the push force increases to 3518N.
The rear adjuster screw allows you to shorten the 140mm nominal stroke by up to 30mm, providing a usable travel window of 110-140mm. It functions as a mechanical stop and does not hold 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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