Airtac SAI40 Standard Air Cylinder SAI40AX250
The AirTAC SAI40 Standard Air Cylinder SAI40AX250 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 250mm 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
- Stroke250 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 SAI40AX250
The AirTAC SAI40X250 is a double-acting ISO 15552 profile cylinder engineered to deliver 628N of push force at 0.5MPa and 879N at 0.7MPa. Its 250mm stroke makes it an excellent choice for medium-travel automation tasks that require consistent kinetic energy transfer. The extruded aluminum barrel design omits tie-rods, providing a clean exterior that resists contamination.
This specific configuration includes a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. Fluid is clean compressed air filtered to 40um, operating within a pressure range of 0.15-1.0 MPa. It utilizes a PT tapered G1/4 port and lacks a standard magnet, meaning position detection via CMSE or DMSE switches is not supported without modification.
Airtac SAI40 Standard Air Cylinder SAI40AX250 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX250 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 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 SAI40AX250
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×250 | 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 SAI40AX250 Is Used
Package Sorting
Provides the 628N push force needed to divert medium-weight packages across sorting lanes with a 250mm travel distance.
Component Clamping
Ideal for securing aluminum or composite machining blanks during light milling, utilizing its SUS420J2 stainless rod for durability.
Pallet Positioning
Pushes empty pallets into staging zones with precise 250mm travel, benefiting from the adjustable end cushions to prevent shock.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX250 the Right Cylinder?
Selecting this 40mm bore over the smaller 32mm variant upgrades your push force from 402N to 628N at 0.5MPa, while stepping up to the 50mm bore yields 982N. The 250mm stroke provides ample travel for packaging and material handling, but at this length, side loads become a critical factor. Unsupported rod extensions over 300mm risk bending the rod bearing; for this 250mm stroke, ensure external guides are used to prevent premature wear if any radial load is present.
As a true ISO 15552 profile cylinder, the SAI40X250 is dimensionally interchangeable with other ISO 15552 cylinders, serving as a direct replacement when matching the 40mm bore, 250mm stroke, G1/4 port, and standard mounting accessories like FA flanges or LB foot brackets. Note that this standard double-acting cylinder relies on adjustable air cushions at both ends to decelerate the piston, but it does not hold loads pneumatically; if your application loses air pressure, the rod will drift. For position holding, consider the SAIL variant with an air-released lock or an external pilot-operated check valve.
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 SAI40AX250 FAQ
At a standard operating pressure of 0.5MPa, the SAI40X250 generates 628N of push force and 528N of pull force. At 0.7MPa, the push force increases to 879N.
Yes, the SAI40X250 is a genuine ISO 15552 profile cylinder, making its mounting interface and envelope dimensions interchangeable with other ISO 15552 compliant cylinders. You simply need to match the 40mm bore, 250mm stroke, and G1/4 port.
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