Airtac SAI40 Standard Air Cylinder SAI40X425
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X425 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- 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 SAI40X425
The AirTAC SAI40X425 is a double-acting ISO 15552 profile cylinder engineered to deliver 628N of push force and 528N of pull force at 0.5 MPa. Its extruded aluminum barrel design omits tie rods, providing a clean exterior that drops in seamlessly for any ISO 15552 mounting interface. The 425mm stroke is well suited for automated material transfer and medium-load positioning tasks.
This configuration features a standard carbon steel piston rod and PT tapered port threading. Because it lacks the -S magnet option, it does not integrate CMSE or DMSE sensors directly. For environments exceeding standard temperature parameters, the standard TPU seals can be swapped for high-temp Viton (H) alternatives during a made-to-order request.
Airtac SAI40 Standard Air Cylinder SAI40X425 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X425 |
|---|---|
| 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 SAI40X425
| 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 SAI40X425 Is Used
Package Diverting
Provides the linear reach needed to push medium-weight packages from a main conveyor line onto secondary sorting lanes.
Component Ejection
Strokes across a wide machine bed to eject finished parts from a machining center into a collection bin.
Pallet Positioning
Extends to push empty pallets into a precise wrapping or labeling station within an automated cell.
Is the Airtac SAI40 Standard Air Cylinder SAI40X425 the Right Cylinder?
If your application requires less push force, stepping down to the 32mm bore yields 402N at 0.5 MPa, whereas stepping up to the 50mm bore provides 982N. At 425mm of travel, the unsupported piston rod is highly susceptible to bending under side loads; utilizing an external guide rail or a dedicated guided cylinder will prevent premature rod-bearing wear.
The SAI40X425 uses a G1/4 port and accepts standard FA/FB flange or LB foot mounts. Remember that the adjustable air cushions at both ends only decelerate the piston near stroke limits; they do not lock the load. If air pressure drops, the rod will drift unless an external pilot-operated check valve or the SAIL locking variant is installed.
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 SAI40X425 FAQ
At 0.5 MPa, the SAI40X425 generates 628N of push force and 528N of pull force. If the operating pressure is increased to 0.7 MPa, the push force rises to 879N.
Yes. As a true ISO 15552 profile cylinder, its mounting dimensions are standardized, making it a drop-in replacement for other ISO 15552 cylinders of the same bore size.
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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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