Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-50
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX125-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 125mm 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
- Stroke125 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 SAIJ80BX125-50
The AirTAC SAIJ80X125-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the travel by up to 50 mm. This creates a highly versatile usable stroke window of 75 to 125 mm, letting you fine-tune the retract end position during commissioning without swapping out the actuator.
This model is equipped with a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads (G3/8) for a tight, reliable pneumatic connection. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches, and the integrated air cushions at both ends work alongside the mechanical stopper to decelerate the load smoothly.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 125 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 SAIJ80BX125-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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 SAIJ80BX125-50 Is Used
Machine Changeovers
Dial in the exact retract distance within the 75-125 mm window during product size changes without replacing the cylinder or adding external mechanical stops.
End-Position Tuning
Fine-tune the final end position during initial commissioning to perfect the seating of parts, using the rear screw to trim up to 50 mm off the nominal stroke.
Wear Compensation
Adjust the stroke over time to account for mechanical wear in tooling or fixtures, extending the lifespan of the surrounding machinery.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-50 the Right Cylinder?
The adjustable stroke is ideal for product changeovers on a packaging line, allowing you to set variable end stops on the fly. The rear adjuster acts strictly as a travel stop and does not hold the load without live air pressure; for fail-safe load holding, consider an AirTAC SAIL or BSAI cylinder. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options. Because the 25 mm rod and M20x1.5 thread handle high side loads well, it is robust, though an external guide is always recommended for optimal wear life.
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 SAIJ80BX125-50 FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke by up to 50 mm. This gives the 125 mm nominal stroke a usable travel window of 75 to 125 mm, which can be fine-tuned at any time without removing the cylinder.
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 SAIJ80BX125-50
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.