Airtac SAIJ80 Adjustable Cylinder SAIJ80BX240-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX240-40S 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 SAIJ80BX240-40S
The AirTAC SAIJ80X240-40-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. The PT tapered port threads and SUS304 stainless steel rod provide excellent corrosion resistance for harsh environments.
This adjustable-stroke design eliminates the need to swap cylinders or bolt on external stops when tuning end positions. Because this SKU includes a magnet (-S), it supports AirTAC CMSE reed and DMSE electronic solid-state sensors housed within the dual-side sensor grooves. The rear screw acts purely as a travel stop for deceleration alongside the standard air cushions, meaning it will not hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX240-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX240-40S |
|---|---|
| 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 SAIJ80BX240-40S
| 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 SAIJ80BX240-40S Is Used
Product Changeover
Dial in the 200-240mm travel window on the fly to accommodate different package sizes on a packaging line without changing out the cylinder.
Machine Setup
Fine-tune the retract end-position during initial commissioning to achieve precise alignment of clamping or pressing tools.
Variable End Stops
Adjust the stroke dynamically for diverter gates on conveyors handling varying product lengths, ensuring gentle physical contact.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX240-40S the Right Cylinder?
The 40mm adjustment window is ideal for production lines running mixed product sizes, enabling variable end-stops without mechanical rebuilds. For fixed-travel tasks, a standard SAI cylinder suffices, but the SAIJ variant shines where fine-tuning is critical. When specifying an ISO 15552 replacement, match the 80mm bore, 240mm stroke, PT port threads, SUS304 rod, and -S magnet.
With a 240mm stroke, the M20x1.5 rod thread and 25mm rod diameter handle moderate side loads well, but an external guide is recommended for heavy off-center loads. Operating speed ranges from 30-800mm/s. Remember that the adjuster is a stop, not a lock; for load-holding without live air, consider an AirTAC SAIL or BSAI cylinder. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80BX240-40S FAQ
The rear adjuster screw allows you to shorten the effective travel from the nominal 240mm down to 200mm. This creates a 200-240mm usable window for fine-tuning the end position without needing external stops.
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 SAIJ80BX240-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.