Airtac SAIJ80 Adjustable Cylinder SAIJ80BX300-20S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX300-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 300mm 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
- Stroke300 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 SAIJ80BX300-20S
The AirTAC SAIJ80X300-20-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. The integrated -20 mm adjustment screw creates a precise 280-300 mm usable travel window, letting you dial in the retract end-position during commissioning without swapping out the entire unit.
Equipped with a SUS304 stainless steel rod (option B) and a -S magnet, this model supports AirTAC CMSE reed and DMSE electronic sensors via the dual-side barrel grooves. Because the 300 mm stroke is relatively long, the 25mm rod diameter should still be paired with an external guide to prevent excessive side-loading. The rear stopper only sets the travel end and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX300-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX300-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 300 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 SAIJ80BX300-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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 SAIJ80BX300-20S Is Used
Product Size Changeovers
Quickly fine-tune the 280-300mm retract distance on packaging lines when switching between different carton or pallet sizes without changing hardware.
Machine Setup Calibration
Dial in the exact end-of-stroke position during initial commissioning to prevent crashes and ensure precise mechanical alignment.
Variable End-Stop Diverter
Act as an adjustable diverter arm on a conveyor where the stopping point for goods must be occasionally shifted backward by a few millimeters.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX300-20S the Right Cylinder?
The adjustable 280-300 mm window is perfect for machines processing varying product sizes, replacing the need for fixed-stroke SAI cylinders when exact end-stops fluctuate. To match this ISO 15552 footprint exactly, specify the 80mm bore, 300mm stroke, PT port thread, and -S magnet.
For any 300 mm stroke, always support the load with an external guide to protect the rod from side-load wear. Remember that the rear adjuster acts purely as a travel stop; it cannot hold a load safely without continuous air pressure. For true load-holding, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ80BX300-20S FAQ
The rear adjuster screw lets you shorten the nominal 300mm stroke by up to 20mm, creating a 280-300mm usable travel window. This stopper only sets the end position; it is not a lock and will not hold the load without live air.
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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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