Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-40
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX290-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 290mm 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
- Stroke290 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 SAIJ80BX290-40
The AirTAC SAIJ80X290-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the nominal 290 mm travel by up to 40 mm. This creates a usable 250-290 mm stroke window, letting you fine-tune the retract end position at commissioning without adding external stops.
Built with a SUS304 stainless steel rod for corrosion resistance, this model uses a G3/8 PT tapered port and includes variable air cushions at both ends. The extruded aluminum barrel features sensor grooves on both sides, though this specific SKU is configured without a magnet for position sensing. The mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 290 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 SAIJ80BX290-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×290 | 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 SAIJ80BX290-40 Is Used
Variable End-Stop Tuning
Dial in the exact retract position within the 250-290 mm window during machine commissioning to perfect product handling without swapping cylinders.
Product Size Changeover
Quickly adapt the cylinder's effective stroke on packaging lines when product dimensions change, using the 40 mm adjustment range to set new end positions.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-40 the Right Cylinder?
Choose this 80 mm bore when an application requires heavy thrust around 2513N at 0.5 MPa, stepping up from a 63 mm bore that provides 1559N. The adjustable stroke is ideal for machine setups requiring variable end stops or product-size changeovers. If you need to hold a load without live air pressure, note that the rear adjuster acts only as a travel stop, not a lock; you would need an external pilot-operated check valve or a related SAIL or BSAI lock cylinder. Because the stroke is 290 mm, ensure you use an external guide to prevent excessive side-loading on the 25 mm rod.
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 SAIJ80BX290-40 FAQ
The rear adjuster acts as a mechanical stop that shortens the effective travel from the 290 mm nominal stroke. You can trim the stroke by up to 40 mm, giving a usable travel window of 250 to 290 mm for fine-tuning end positions.
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