Airtac SAI40 Standard Air Cylinder SAI40X325S
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X325S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 325mm 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
- Stroke325 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 SAI40X325S
The AirTAC SAI40X325-S is a double-acting ISO 15552 profile cylinder featuring a 40mm bore and 325mm stroke. It generates 628N of push force and 528N of pull force at 0.5 MPa, making it well-suited for medium-duty handling tasks. The extruded aluminum barrel design omits tie-rods, providing a clean exterior that matches standardized ISO 15552 mounting dimensions for seamless interchangeability.
This specific configuration includes a piston magnet for non-contact position detection using CMSE or DMSE reed switches, which ride directly in the barrel's dual sensor grooves. The standard carbon steel piston rod offers robust durability for general industrial automation, while the adjustable air cushions at both ends absorb impact energy at the stroke extremes.
Airtac SAI40 Standard Air Cylinder SAI40X325S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X325S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 325 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 SAI40X325S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×325 | 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 SAI40X325S Is Used
Package Sorting
Provides the 628N push force needed to divert medium-weight cartons on automated sorting lines.
Component Clamping
Holds machined parts securely in place during light milling or drilling operations.
Pallet Positioning
Extends 325mm to push pallets into designated staging areas prior to stretch wrapping.
Is the Airtac SAI40 Standard Air Cylinder SAI40X325S the Right Cylinder?
This 40mm bore provides a balanced output of 628N at 0.5 MPa. If your application requires less force, stepping down to a 32mm bore yields 402N; conversely, upgrading to a 50mm bore provides 982N for heavier payloads. The PT tapered port thread ensures a positive mechanical seal when paired with appropriate thread sealant.
Because the 325mm stroke creates a relatively long unsupported rod extension, side loads can induce bending stresses on the rod bearing. To prevent premature wear, implement an external guide rail or use a fully guided cylinder mechanism. Note that this standard SAI cylinder relies on continuous air pressure to hold position; if the air is exhausted, the load will drift. For fail-safe load holding without live pressure, consider the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variants.
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 SAI40X325S FAQ
At a 0.5 MPa operating pressure, this 40mm bore cylinder generates 628N of push force and 528N of pull force. At 0.7 MPa, the push force increases to 879N.
Yes. The SAI40X325-S is a true ISO 15552 profile cylinder, meaning its mounting dimensions are standardized. It serves as a direct drop-in replacement for any cylinder conforming to the ISO 15552 interface.
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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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