Airtac SAIJ80 Adjustable Cylinder SAIJ80BX120-30
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX120-30 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 SAIJ80BX120-30
The AirTAC SAIJ80X120-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 90-120 mm usable travel window by allowing you to trim the 120 mm nominal stroke back by up to 30 mm.
This model features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, while the adjustable rear stopper acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX120-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX120-30 |
|---|---|
| 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 SAIJ80BX120-30
| 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 SAIJ80BX120-30 Is Used
Machine Setup & Changeover
Dial in the exact 90 to 120 mm retract distance during product size changes on a packaging line without replacing the cylinder or adding external mechanical stops.
Variable End-Stop Positioning
Use the 30 mm adjustment screw to fine-tune the final end position of a pressing or lifting operation, compensating for mechanical wear or material thickness variations.
Corrosive Environment Actuation
Leverage the SUS304 stainless steel rod for double-acting automation tasks in washdown or mildly corrosive environments where standard carbon steel rods would fail.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX120-30 the Right Cylinder?
Choose this adjustable-stroke cylinder when you need to fine-tune the retract end-position during machine setup or product changeover, avoiding the need to bolt on external stops. If your application requires load-holding without continuous air pressure, this cylinder is not a lock; consider the SAIL or BSAI series instead. Because the stroke is 120 mm, side-load risks are minimal, but always ensure the 25 mm rod diameter and M20x1.5 rod thread are properly aligned to handle expected side loads.
For an exact ISO 15552 replacement, match the 80 mm bore, 120 mm stroke, 30 mm adjustment range, PT G3/8 port, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that this specific configuration omits the FB, CA, CB, and CR mounts. If you need position sensing, a magnet (-S) must be specified to work with CMSE reed or DMSE electronic sensors.
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 SAIJ80BX120-30 FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 30 mm, creating a 90 to 120 mm usable travel window. It acts as a mechanical stop to set the end position and is not a lock, meaning the cylinder still requires live air pressure to hold the load.
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Covers non-human-caused product damage.
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