Airtac SAIJ80 Adjustable Cylinder SAIJ80BX450-75
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX450-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 450mm 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
- Stroke450 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 SAIJ80BX450-75
The AirTAC SAIJ80X450-75 is a double-acting ISO 15552 profile cylinder featuring a rear mechanical adjuster that trims the nominal 450 mm stroke back by up to 75 mm. This creates a highly flexible 375-450 mm usable travel window, allowing you to dial in the exact retract end-position during commissioning without swapping hardware.
Built for demanding environments, this specific configuration uses a SUS304 stainless steel rod for superior corrosion resistance. The extruded aluminum barrel includes sensor grooves on three sides for flexible mounting of CMSE reed or DMSE electronic switches. Because the 450 mm stroke is long and unsupported, an external guide is recommended to prevent rod side-loading and premature seal wear.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX450-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX450-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 450 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 SAIJ80BX450-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×450 | 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 SAIJ80BX450-75 Is Used
Variable End-Stop Positioning
Ideal for machining fixtures where the retract position must be shifted by up to 75 mm between operations, allowing rapid setup changes without disassembling the cylinder.
Product Size Changeover
Perfect for packaging lines handling varying package lengths. The 375-450 mm travel window lets operators fine-tune the pusher stroke to match the current product dimensions on the fly.
Heavy Machinery Setup
The SUS304 rod withstands harsh washdown environments while the rear screw sets the exact home position.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX450-75 the Right Cylinder?
Choose this 80 mm bore when you need substantial thrust—stepping down to a 63 mm bore drops your 0.5 MPa push force to 1559 N, which may be insufficient for heavy jigs. The 75 mm adjustment range is ideal for production lines running multiple product sizes, as operators can simply turn the rear stopper to shift the end-position rather than machining new external stops. Unlike a fixed-stroke SAI cylinder, this adjuster allows rapid mechanical fine-tuning during machine changeover.
Remember that the rear adjuster acts only as a travel stop to set deceleration; it does not hold the load without live air pressure. For applications requiring true load-holding in the event of air loss, consider the SAIL pneumatic lock or BSAI clamp-lock cylinder series. This SKU uses a PT tapered port thread and is dimensionally interchangeable per ISO 15552 mounting interfaces.
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 SAIJ80BX450-75 FAQ
The rear adjuster screw lets you shorten the 450 mm nominal stroke by up to 75 mm, creating a usable travel window of 375 to 450 mm. It acts as a mechanical stop to fine-tune the end position, but it is not a lock and requires live air pressure to hold the load.
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