Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-20
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX425-20 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 SAIJ80BX425-20
By turning the external stopper screw, you can fine-tune the effective travel within a precise 405-425mm window. This eliminates the need to physically swap cylinders or bolt on external stops during machine commissioning or product changeovers.
Built with a SUS304 stainless steel rod for superior corrosion resistance, this 80mm bore unit features PT tapered ports and reaches speeds of 30-800mm/s. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed and DMSE electronic switches if a magnet is specified later. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-20 |
|---|---|
| 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 SAIJ80BX425-20
| 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 SAIJ80BX425-20 Is Used
Variable End-Stop Tuning
Dial in the exact 405-425mm retract position during machine setup to accommodate different product sizes without changing the cylinder.
Commissioning Adjustments
Fine-tune the end-of-stroke position on the fly to resolve minor mechanical clearances and optimize cycle timing.
Changeover Automation
Rapidly reconfigure production line stops for new part runs using the built-in 20mm rear adjustment range.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-20 the Right Cylinder?
The adjustable 405-425mm travel window is ideal for setups requiring variable end-stops without buying a new cylinder. Because the stroke is 425mm, an external guide is recommended to prevent excessive side-loading on the rod. For load-holding without live air, select the SAIL or BSAI series instead, as the SAIJ adjuster is a stop, not a lock. This model is dimensionally interchangeable per ISO 15552 using PT ports and the Basic, FA, LB, TC, FTC, TCM1, TCM2 mounting set.
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 SAIJ80BX425-20 FAQ
The rear adjuster screw allows you to shorten the 425mm nominal stroke by up to 20mm, creating a usable travel window of 405-425mm to fine-tune the retract end position without swapping the cylinder.
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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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