Airtac SAIJ80 Adjustable Cylinder SAIJ80BX180-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX180-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 180mm 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
- Stroke180 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 SAIJ80BX180-40S
The AirTAC SAIJ80X180-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that lets you dial back the nominal 180 mm travel by up to 40 mm, creating a 140-180 mm usable end-position window. The integrated -S magnet works seamlessly with AirTAC CMSE reed and DMSE solid-state sensors mounted in the dual-side barrel grooves.
This SKU specifies a SUS304 stainless steel rod (option B) for superior corrosion resistance, paired with PT tapered port threads. The rear adjuster acts purely as a mechanical stop for fine-tuning commissioning or product changeovers without swapping the cylinder. It supports a standard mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) but omits FB, CA, CB, and CR brackets.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX180-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX180-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 180 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 SAIJ80BX180-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×180 | 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 SAIJ80BX180-40S Is Used
Variable Product Changeover
Quickly reconfigure the 140-180 mm retract stop for different packaging sizes without changing the cylinder or adding external shims.
End-Position Tuning
Fine-tune the exact bottoming point during machine commissioning to absorb mechanical tolerance and prevent hard impacts.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX180-40S the Right Cylinder?
Choose this 80 mm bore if you need more thrust than the 63 mm class (1402 N pull at 0.5 MPa) but want to avoid the larger 100 mm footprint. The 40 mm adjustment range is ideal for machines handling variable product sizes, letting you set precise retract stops on the fly. For any stroke at or above 300 mm, you would need external guides to prevent side-load damage, but this 180 mm travel is well within safe unsupported limits for the 25 mm rod and M20x1.5 thread.
Remember that the rear adjuster is a travel stop, not a locking device; it cannot hold a load without live air pressure. If your application requires true fail-safe load holding, consider the AirTAC SAIL pneumatic lock or BSAI clamp-lock cylinders. To match this ISO 15552 replacement exactly, specify bore 80, stroke 180, 40 mm adjustment, PT ports, SUS304 rod, and the -S magnet.
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 SAIJ80BX180-40S FAQ
At 0.9 MPa the push force increases to 4523 N, with a maximum rated force of 513 kgf at 1.0 MPa.
The rear adjusting screw acts as a mechanical stop that shortens the effective travel from the 180 mm nominal stroke down to 140 mm. It allows precise end-position tuning during setup but does not lock the load without live air pressure.
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