Airtac SAIJ80 Adjustable Cylinder SAIJ80BX325-75S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX325-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 325mm 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
- Stroke325 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 SAIJ80BX325-75S
The AirTAC SAIJ80X325-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 75 mm. This creates a highly flexible 250-325 mm usable stroke window, letting you dial in exact end positions during commissioning without swapping out the barrel or adding external stops. Built with a SUS304 stainless steel rod, it handles aggressive or wash-down environments better than standard carbon steel.
The extruded aluminum profile includes sensor grooves on both sides, and because this is an -S variant, it carries a magnet ready for CMSE reed or DMSE solid-state sensors. It uses a PT tapered G3/8 port and operates at speeds between 30 and 800 mm/s.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX325-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX325-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 325 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 SAIJ80BX325-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×325 | 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 SAIJ80BX325-75S Is Used
Machine Changeovers
Quickly reset the cylinder's end-of-stroke position for different product lengths on a packaging line without changing out the actuator.
End-Position Tuning
Fine-tune the retract stroke during initial commissioning to perfectly align a heavy press or clamping fixture within the 250-325 mm window.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX325-75S the Right Cylinder?
The adjustable rear stopper is perfect for product-size changeovers on a conveyor line, acting as a hard travel limit while the integrated air cushions manage end-of-stroke deceleration. Because the 325 mm stroke is relatively long, you should use an external guide to prevent excessive side-loading on the rod.
Remember that the rear adjuster is a stop, not a lock; it cannot hold a load safely without live air pressure. If your machine requires true fail-safe load holding, select the SAIL pneumatic lock or BSAI clamp-lock series instead. To replace this ISO 15552 cylinder, match the 80 mm bore, 325 mm stroke, 75 mm adjustment, PT G3/8 port, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and the -S magnet.
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 SAIJ80BX325-75S FAQ
It features a rear adjusting screw that lets you shorten the 325 mm nominal stroke by up to 75 mm, providing a usable travel window of 250 to 325 mm. This allows you to set exact end positions without adding external mechanical stops.
At a maximum operating pressure of 1.0 MPa, the SAIJ80X325-75-S generates a push force of 513 kgf (approximately 5031 N) and a pull force of 463 kgf.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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