Airtac SAI40 Standard Air Cylinder SAI40BX425
The AirTAC SAI40 Standard Air Cylinder SAI40BX425 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 425mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke425 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 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 SAI40 Standard Air Cylinder SAI40BX425
The AirTAC SAI40X425 is a double-acting ISO 15552 profile cylinder engineered to deliver 879 N of push force at 0.7 MPa. Its 425 mm stroke provides the extended travel needed for material handling and automated clamping tasks. The extruded aluminum barrel design omits tie-rods, ensuring a clean exterior that resists debris accumulation.
Built to exacting standards, this specific configuration incorporates a SUS304 stainless steel piston rod for superior corrosion resistance in humid or washdown environments. It utilizes PT tapered port threads and lacks a standard magnet. For applications demanding position holding without continuous air pressure, consider integrating the SAIL locking variant.
Airtac SAI40 Standard Air Cylinder SAI40BX425 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX425 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 425 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAI40 Standard Air Cylinder SAI40BX425
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×425 | 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 SAI40 Standard Air Cylinder SAI40BX425 Is Used
Package Diversion
Extends 425 mm to actuate routing gates on packaging lines, using 879 N of force to reliably push heavy cartons onto secondary tracks.
Automated Clamping
Secures stainless steel workpieces during machining operations, leveraging the corrosion-resistant SUS304 rod to withstand coolant splashes.
Pallet Positioning
Pushes empty pallets into alignment at the infeed of a stretch wrapper, taking advantage of the extended stroke to clear the conveyor path.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX425 the Right Cylinder?
Selecting this 40 mm bore over the smaller 32 mm version upgrades your thrust from 563 N to 879 N at 0.7 MPa, while stepping up to the 50 mm bore yields 1374 N. The 425 mm stroke falls well within the 1200 mm standard limit, making it highly versatile. Because the stroke exceeds 300 mm, the unsupported rod is susceptible to bending under side loads; utilize an external guide rail or a guided cylinder to prevent premature rod-bearing wear.
As a true ISO 15552 profile cylinder, it offers a direct mounting interface replacement for other standard cylinders. Ensure your setup matches the G1/4 port size, M12x1.25 rod thread, and preferred mounting accessories like FA flanges or TC trunnions. Note that standard air cushions only decelerate the piston near stroke ends and will not hold a load if air pressure drops.
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 SAI40 Standard Air Cylinder SAI40BX425 FAQ
At an operating pressure of 0.7 MPa, this 40 mm bore cylinder generates 879 N of push force and 528 N of pull force. At 0.5 MPa, the push force is 628 N.
Yes, the SAI40X425 is dimensionally interchangeable per ISO 15552. You can drop it into existing mounts matching the standard 40 mm bore footprint, provided your setup accommodates the G1/4 port and M12x1.25 rod thread.
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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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