Airtac SAIJ80 Adjustable Cylinder SAIJ80BX120-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX120-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 120mm 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
- Stroke120 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 SAIJ80BX120-40S
The AirTAC SAIJ80X120-40-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. Equipped with a SUS304 stainless steel rod, it provides excellent corrosion resistance for demanding environments.
This model provides a usable travel window of 80-120mm, allowing you to dial back the nominal 120mm stroke by up to 40mm during commissioning. The built-in magnet supports position sensing via CMSE reed or DMSE electronic sensors, and the extruded aluminum barrel includes sensor grooves on both sides for flexible mounting.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX120-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX120-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 120 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 SAIJ80BX120-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×120 | 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 SAIJ80BX120-40S Is Used
Machine Changeovers
Dial in the 80-120mm travel window during product size transitions to set precise retract positions without mechanical rebuilds.
End-Stop Tuning
Fine-tune the final retract position by up to 40mm at commissioning to perfect machine timing and avoid hard mechanical crashes.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX120-40S the Right Cylinder?
The 40mm adjustment range is ideal for product changeovers, letting you set a new retract end-stop without swapping the cylinder or adding external stops. For strokes of 300mm or more, an external guide is recommended to prevent side-load wear, though this 120mm stroke is well within standard limits.
As a double-acting cylinder, the rear adjuster and air cushions only decelerate the travel end; they do not hold the load without live air pressure. For true load-holding without continuous air, consider the SAIL pneumatic lock or BSAI clamp-lock series. This SAIJ model uses the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and is dimensionally interchangeable per ISO 15552.
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 SAIJ80BX120-40S FAQ
At the maximum operating pressure of 1.0 MPa, it can deliver up to 513 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the 120mm nominal stroke down to 80mm. This creates an 80-120mm usable window for fine-tuning end positions without replacing the cylinder.
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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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