Airtac SAIJ80 Adjustable Cylinder SAIJ80BX240-75S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX240-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 240mm 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
- Stroke240 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 SAIJ80BX240-75S
The AirTAC SAIJ80X240-75-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 165-240 mm usable travel window by allowing you to dial back the nominal 240 mm stroke by up to 75 mm during commissioning.
This variant features a SUS304 stainless steel rod for corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel incorporates sensor grooves on both sides. It uses a PT G3/8 port and relies on variable air cushions at both ends to decelerate the load.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX240-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX240-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 240 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 SAIJ80BX240-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×240 | 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 SAIJ80BX240-75S Is Used
Machine Changeover
Dial in the exact 165-240 mm end position for different product sizes on a packaging line without physically swapping the cylinder.
Diversion Stops
Adjust the stroke length on the fly to accommodate different carton widths on a conveyor system.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX240-75S the Right Cylinder?
Choose this 80 mm bore when 50 mm (982 N at 0.5 MPa) lacks the thrust for heavier fixtures, but 100 mm (3927 N) is oversized. The 75 mm adjustment range is perfect for product changeovers requiring different end-stops without swapping cylinders. For strokes of 240 mm or more, the 25 mm rod and M20x1.5 thread handle side loads, but an external guide is recommended for unsupported masses. To replace an ISO 15552 cylinder, match the 80 mm bore, 240 mm stroke, PT G3/8 port, and -S magnet.
Remember that the rear adjuster acts only as a travel stop. It does not hold the load without live air pressure. For true fail-safe load holding, select the SAIL or BSAI series instead.
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 SAIJ80BX240-75S FAQ
At the maximum 1.0 MPa, it provides up to 513 kgf.
The rear adjuster screw lets you shorten the effective travel from 240 mm down to 165 mm. This allows precise end-position tuning at commissioning without adding external stops, though it functions only as a stop and not a load-holding lock.
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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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