Airtac SAIJ80 Adjustable Cylinder SAIJ80BX240-75
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX240-75 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 SAIJ80BX240-75
The AirTAC SAIJ80X240-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 165-240 mm, allowing you to dial back the nominal 240 mm stroke by up to 75 mm during commissioning.
Equipped with a SUS304 stainless steel rod for corrosion resistance, it uses a PT tapered G3/8 port. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. Mounting options cover the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR styles found on other ISO cylinders.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX240-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX240-75 |
|---|---|
| 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 SAIJ80BX240-75
| 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 SAIJ80BX240-75 Is Used
Product Changeovers
Dial in the exact end-of-stroke position within the 165-240 mm window when switching between product sizes on a packaging line, eliminating the need to physically swap cylinders.
Variable End Stops
Set precise retract positions for diverter arms or sorting gates without installing secondary external stops, speeding up machine setup and commissioning.
Machine Setup Tuning
Fine-tune the travel limit during initial equipment commissioning to prevent mechanical interference, using the rear adjuster to safely trim the effective stroke.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX240-75 the Right Cylinder?
The 75 mm adjustment range is ideal for product-size changeovers, letting operators fine-tune the retract end position without swapping hardware or adding external stops.
Because the rear adjuster functions only as a travel stop and the air cushions handle deceleration, neither will hold a load without live air pressure. For fail-safe load holding, consider the SAIL pneumatic lock or BSAI clamp-lock series. When replacing an ISO 15552 cylinder, match the 80 mm bore, 240 mm stroke, PT G3/8 port, and the chosen mounting accessory. The 25 mm rod and M20x1.5 thread handle high side loads, but for this 240 mm stroke, an external guide rail is recommended to prevent rod binding.
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 SAIJ80BX240-75 FAQ
The rear adjuster acts as a mechanical stop that shortens the effective stroke. For this 240 mm nominal stroke model, the -75 code allows you to trim the travel back by up to 75 mm, creating a usable 165-240 mm positioning window. It is a travel stop, not a lock, and requires live air to hold position.
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