Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-50
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX425-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 425mm 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
- Stroke425 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 SAIJ80BX425-50
The AirTAC SAIJ80X425-50 is a double-acting, double-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 425 mm stroke that can be dialed back by up to 50 mm, yielding a precise 375-425 mm usable travel window for fine-tuning end positions at commissioning. In this configuration, the rod is manufactured from SUS304 stainless steel (option B), and the fluid ports use PT tapered threads.
The extruded aluminum barrel includes sensor grooves on both sides. While the rear adjuster screw sets the retract travel limit, it functions strictly as a mechanical stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 425 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 SAIJ80BX425-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×425 | 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 SAIJ80BX425-50 Is Used
Machine Setup & Changeover
Dial in the 375-425 mm retract position precisely during product size changeovers on a machining line without bolting on external stoppers.
Variable End-Stop Diverter
Adjust the travel limit on the fly for a pneumatic diverter arm handling varying package lengths on a conveyor system.
Long-Stroke Assembly Press
Fine-tune the end-of-stroke contact point for a 2513 N assembly press, ensuring precise seating of components during commissioning.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-50 the Right Cylinder?
Choose this adjustable-stroke model when a machine setup requires variable end-stops or product changeovers without physically swapping the cylinder or adding external stops. If your application demands less thrust, stepping down to a 63 mm bore yields 1559 N at 0.5 MPa; conversely, a 100 mm bore provides 3927 N for heavier loads. Because the 425 mm stroke is substantial, the 25 mm rod and M20x1.5 thread can only carry limited side load, so an external guide is recommended for unsupported loads.
This SAIJ configuration omits the FB, CA, CB, and CR mounts, utilizing a reduced interface of Basic, FA, LB, TC, FTC, TCM1, and TCM2. It is dimensionally interchangeable per ISO 15552. For applications requiring position holding without live pressure, a plain SAIJ will not suffice; consider the SAIL (lock) or BSAI (clamp-lock) series, or use an external pilot-operated check valve.
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 SAIJ80BX425-50 FAQ
At the maximum 1.0 MPa pressure, it yields 513 kgf.
The rear adjuster screw acts as a mechanical stop that allows you to shorten the 425 mm nominal stroke by up to 50 mm, creating a 375-425 mm usable travel window. It only sets the end position and does not lock or hold the load without live 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 SAIJ80BX425-50
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.