Airtac SAIJ80 Adjustable Cylinder SAIJ80BX40-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX40-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 40mm 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
- Stroke40 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 SAIJ80BX40-40S
The AirTAC SAIJ80X40-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down from a 40 mm nominal stroke to a 0-40 mm usable window. The rear screw acts purely as a travel stop, meaning it cannot hold a load without live air pressure.
This adjustable-stroke design eliminates the need to swap cylinders or add external stops during machine commissioning. It uses a PT tapered port and retains the standard ISO 15552 mounting interface, utilizing a reduced mounting set that includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 while omitting FB, CA, CB, and CR.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX40-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX40-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 40 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 SAIJ80BX40-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×40 | 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 SAIJ80BX40-40S Is Used
Precision End-Stop Tuning
Dial in the exact clamping position within a 0-40 mm window during machine setup without physically machining new stop blocks.
Product Size Changeover
Quickly adjust the retract end-position on packaging lines when switching between different product sizes or formats.
Short-Stroke Pressing
Apply 2513 N of pressing or holding force in compact assembly stations where a 40 mm maximum stroke is sufficient.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX40-40S the Right Cylinder?
The adjustable stroke is ideal for applications requiring precise end-position tuning during product changeover, offering far more flexibility than a fixed-stroke SAI cylinder. For load-holding without live air pressure, this cylinder is insufficient; consider an SAIL or BSAI model instead. Because the nominal stroke is 40 mm, side-load is minimal, but always ensure the load is guided to prevent rod binding.
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 SAIJ80BX40-40S FAQ
The rear adjuster screw allows you to shorten the effective travel by up to 40 mm, creating a 0-40 mm usable stroke window. This stopper only sets the travel end and does not lock the position; live air pressure is required to hold the load.
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 SAIJ80BX40-40S
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