Airtac SAIJ80 Adjustable Cylinder SAIJ80BX155-20S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX155-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 155mm 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
- Stroke155 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 SAIJ80BX155-20S
The AirTAC SAIJ80X155-20-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that creates a usable travel window of 135 to 155 mm. The extruded aluminum barrel integrates sensor grooves on both sides to accommodate CMSE reed and DMSE electronic switches.
This specific configuration includes a SUS304 stainless steel rod for superior corrosion resistance and a PT tapered port thread. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position during commissioning; it does not lock the load without continuous air pressure. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX155-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX155-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 155 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 SAIJ80BX155-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×155 | 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 SAIJ80BX155-20S Is Used
Product Changeovers
Quickly dial in the 135-155 mm travel window during format changes on packaging lines without physically replacing the cylinder.
End-Stop Tuning
Fine-tune the retract position during machine commissioning to prevent crashes and ensure precise mechanical alignment.
Corrosive Environments
Leverage the SUS304 stainless steel rod for reliable actuation in washdown or mildly corrosive industrial manufacturing settings.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX155-20S the Right Cylinder?
The adjustable stroke is ideal for product changeovers on a line, allowing operators to dial in the exact end-stop without swapping hardware or adding external stops. For load-holding without live air pressure, consider an AirTAC SAIL or BSAI cylinder instead, as the SAIJ adjuster is not a locking mechanism.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 155 mm nominal stroke, 20 mm adjustment range, PT port thread, and the -S magnet requirement. Because the 155 mm stroke is relatively short, side-load stress is minimal, but the 25 mm rod and M20x1.5 thread still provide excellent rigidity for off-center loads.
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 SAIJ80BX155-20S FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke by up to 20 mm, providing a usable travel window of 135 to 155 mm. It sets the end position but does not hold the load without live air pressure.
It operates at speeds between 30 and 800 mm/s.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ80 Adjustable Cylinder SAIJ80BX155-20S
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