Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-50S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX290-50S 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 SAIJ80BX290-50S
The AirTAC SAIJ80X290-50-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. The SUS304 stainless steel rod and M20x1.5 rod thread handle high side loads, while the integrated magnet supports CMSE reed and DMSE electronic sensors via the dual-side barrel grooves.
This adjustable model uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. The rear adjuster acts purely as a mechanical stop to fine-tune the retract position without adding external stops, and it does not lock or hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-50S |
|---|---|
| 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 SAIJ80BX290-50S
| 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 SAIJ80BX290-50S Is Used
Machine Changeovers
Dial in the 240-290 mm travel window during product size changes to set new retract positions without physically swapping cylinders or adding external stop blocks.
End-Position Tuning
Fine-tune the exact retract end-point during commissioning using the 50 mm adjustment range, ensuring precise mechanical alignment before finalizing the setup.
Variable End Stops
Adjust the stroke on the fly for conveyor diverters or positioning mechanisms that handle varying package sizes and require flexible travel limits.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-50S the Right Cylinder?
If you need less force, stepping down to a 63 mm bore yields 2805N, whereas a 100 mm bore provides 7068N for heavier loads. The adjustable 240-290 mm window is perfect for machine setups requiring variable end-stops or product-size changeovers, avoiding the need to swap out a fixed-stroke SAI cylinder.
Because the 290 mm stroke is substantial, an external guide is recommended to manage rod deflection and side loads. For load-holding without live pressure, note that the rear adjuster and air cushions only decelerate travel; you must use a SAIL pneumatic lock, BSAI clamp-lock, or external rod lock. This cylinder is dimensionally interchangeable per ISO 15552 and uses PT tapered ports.
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 SAIJ80BX290-50S FAQ
It operates at speeds between 30 and 800 mm/s.
The rear adjuster functions as a mechanical stop, allowing you to shorten the effective stroke from 290 mm down to 240 mm. It sets the travel end-point but does not lock or hold the load without continuous air pressure.
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1-Year Warranty
Covers non-human-caused product damage.
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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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