Airtac SAI40 Standard Air Cylinder SAI40X135
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X135 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 135mm 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
- Stroke135 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 SAI40X135
The AirTAC SAI40X135 is a double-acting ISO 15552 profile cylinder featuring a 40mm bore and a custom 135mm stroke. It generates 628N of push force at 0.5 MPa, making it well-suited for specialized mid-range automation tasks that require a non-standard travel distance. The extruded aluminum barrel design omits tie rods, providing a clean exterior that easily drops into existing ISO 15552 mounting interfaces.
This specific configuration utilizes a standard carbon steel piston rod and PT tapered port threads. Because it lacks the -S magnet option, it does not integrate CMSE or DMSE sensor switches directly. For applications requiring higher heat resistance, the standard TPU seals can be swapped for Viton (H) or NBR (N) alternatives within the broader SAI family.
Airtac SAI40 Standard Air Cylinder SAI40X135 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X135 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 135 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 SAI40X135
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×135 | 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 SAI40X135 Is Used
Custom Tool Stroke
Drives specialized machining fixtures requiring a precise 135mm travel distance to engage or release custom part geometries.
Mid-Range Diverting
Actuates diverter arms on packaging lines where 628N of push force at 0.5 MPa is sufficient to redirect medium-weight cartons.
Gated Pallet Stops
Operates lifting and stopping gates within conveyor transport systems, utilizing the standardized ISO 15552 mounting footprint for easy frame integration.
Is the Airtac SAI40 Standard Air Cylinder SAI40X135 the Right Cylinder?
Selecting this bore size is appropriate when the 32mm version (providing 402N at 0.5 MPa) lacks sufficient thrust, but the 50mm bore (982N at 0.5 MPa) would be physically oversized for your machinery. The 135mm stroke is a made-to-order dimension outside the standard increments, ensuring exact travel for bespoke machine cycles.
Because this is a non-standard 135mm stroke, you must account for rod bearing bending under side loads; utilizing an external guide rail will prevent premature seal wear. Furthermore, a standard double-acting cylinder will drift if air pressure is lost, so incorporate a SAIL lock variant or an external pilot-operated check valve if the load must be held vertically during an exhaust event.
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 SAI40X135 FAQ
At an operating pressure of 0.5 MPa, this 40mm bore cylinder provides a push force of 628N and a pull force of 528N. If pressure is increased to 0.7 MPa, the push force reaches 879N.
Yes, the SAI series is a genuine ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 cylinders. You can drop it into existing foot (LB) or flange (FA/FB) mounting interfaces seamlessly.
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