Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-30S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX425-30S 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 SAIJ80BX425-30S
The AirTAC SAIJ80X425-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 425 mm travel by up to 30 mm. This yields a usable window of 395-425 mm, enabling precise end-position tuning at commissioning without swapping the barrel or adding external stops. The barrel features sensor grooves on both sides, and the integrated -S magnet works seamlessly with AirTAC CMSE reed and DMSE electronic sensors.
This model uses a G3/8 port and relies on variable air cushions at both ends to decelerate the load. The rear adjuster functions strictly as a travel stop, not a lock, meaning it cannot hold the load without live air pressure. For applications requiring true load-holding without continuous pressure, you should consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-30S |
|---|---|
| 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 SAIJ80BX425-30S
| 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 SAIJ80BX425-30S Is Used
Machine Changeover
Dial in the 395-425 mm travel window during product size transitions without replacing the cylinder or adding external shims.
End-Stop Tuning
Fine-tune the retract position at commissioning to hit exact fixture locations, using the rear screw as a precise mechanical stop.
Variable Positioning
Adjust the effective stroke on automated lines to accommodate varying part lengths without re-engineering the pneumatic layout.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-30S the Right Cylinder?
The adjustable stroke is perfect for machine changeovers, letting you fine-tune the retract position on the fly. Unlike a fixed-stroke SAI cylinder, the SAIJ lets you set the exact end-stop without mechanical shims.
When ordering, confirm the 80 mm bore, 425 mm stroke, 30 mm adjustment, PT tapered port threads, and the -S magnet. Because the stroke is 425 mm, the 25 mm rod and M20x1.5 thread face increased side-load risks; an external guide is recommended to prevent rod binding over this long travel. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR brackets.
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 SAIJ80BX425-30S FAQ
At the maximum operating pressure of 1.0 MPa, it delivers up to 513 kgf.
The rear adjuster screw lets you shorten the 425 mm nominal stroke by up to 30 mm, creating a 395-425 mm usable travel window. The adjuster acts only as a travel stop and does not lock the load without live 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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