Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX375-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 375mm 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
- Stroke375 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 SAIJ80BX375-40S
The AirTAC SAIJ80X375-40-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. The built-in rear stopper allows you to dial back the 375mm nominal travel, providing a 335-375mm usable stroke window to perfectly tune end positions during commissioning without adding external stops.
This specific configuration features a SUS304 stainless steel rod for superior corrosion resistance and includes a standard magnet for position sensing. It supports AirTAC CMSE reed and DMSE electronic solid-state switches fitted into the dual-side sensor grooves on the extruded aluminum barrel. The adjustable stopper acts only as a travel end-setter and deceleration aid, not a load lock, so live air is required to hold position.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 375 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 SAIJ80BX375-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×375 | 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 SAIJ80BX375-40S Is Used
Variable End-Stop Tuning
Dial in the exact 335-375mm travel distance during machine commissioning to accommodate varying material thicknesses without physically swapping the actuator.
Product Size Changeover
Quickly adjust the retract position on a packaging line when switching between different carton dimensions, using the rear screw to set the new baseline.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-40S the Right Cylinder?
The 40mm adjustment range is ideal for machinery requiring variable end-stops or frequent product-size changeovers, replacing the need to swap out a fixed-stroke SAI cylinder. For true fail-safe load holding without live air pressure, integrate an external pilot-operated check valve or select an AirTAC SAIL or BSAI locking cylinder instead of relying on the rear adjuster.
Because the 375mm stroke is non-standard and exceeds the 1500mm standard threshold while remaining under the maximum limit, it is a made-to-order length. At this extended travel, the 25mm rod and M20x1.5 thread provide substantial rigidity, but an external guide is still recommended to prevent side-load damage to the rod seals. This SAIJ variant uses the standard ISO 15552 mounting interface, supporting Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets while omitting FB, CA, CB, and CR styles.
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 SAIJ80BX375-40S FAQ
It can deliver a maximum push force of 513 kgf at 1.0 MPa.
The rear adjuster screw acts as an external stopper that trims the effective travel back from the 375mm nominal stroke, creating a 335-375mm usable window. It sets the end position and aids deceleration, but it does not lock the load mechanically without live air pressure.
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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.
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Most inquiries answered within 7-8 hours.
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