Airtac SAI40 Standard Air Cylinder SAI40AX85
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40AX85 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 85mm 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
- Stroke85 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 SAI40AX85
The AirTAC SAI40X85 is a double-acting ISO 15552 profile cylinder featuring a 40mm bore and an 85mm stroke. It delivers a push force of 628 N and a pull force of 528 N at 0.5 MPa, making it a robust choice for moderate-duty actuation. The extruded aluminum barrel design omits tie rods, providing a clean exterior that easily drops into existing ISO 15552 mounting interfaces.
This specific configuration incorporates an SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance in humid environments. Fluid ports use PT tapered threads, and the barrel features dual-side sensor grooves for direct switch mounting. For higher temperature applications up to 70 C, the standard TPU seals can be swapped for Viton (H) alternatives.
Airtac SAI40 Standard Air Cylinder SAI40AX85 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX85 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 85 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 SAI40AX85
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×85 | 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 SAI40AX85 Is Used
Package Diverting
Provides rapid lateral pushing force to sort or divert packages on a high-speed conveyor line.
Clamp Jigs
Secures medium-weight workpieces in machining jigs where 628 N of holding thrust is sufficient.
Gate Actuation
Operates small pneumatic gates or hoppers that require a compact 85mm stroke and reliable retraction.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX85 the Right Cylinder?
Selecting this 40mm bore makes sense when the 32mm variant (402 N push at 0.5 MPa) lacks thrust, but the 50mm option (982 N push) would be physically oversized. The 85mm stroke is ideal for short, rapid movements within the 30-800 mm/s speed range. Because this is a double-acting cylinder, it requires air pressure to both extend and retract the rod.
If your machinery experiences pressure loss or valve centering, this cylinder will not hold its load and may drift; for those safety-critical applications, consider the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variants. To ensure accurate direct compatibility, verify the 40mm bore, 85mm stroke, PT port threads, and your required mounting accessories (such as FA foot or TC trunnion).
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 SAI40AX85 FAQ
At an operating pressure of 0.5 MPa, the SAI40X85 provides a push force of 628 N and a pull force of 528 N. At 0.7 MPa, the push force increases to 879 N.
Yes, the SAI40X85 is dimensionally interchangeable per ISO 15552. You can use it as a direct replacement for other ISO 15552 profile cylinders, provided your port and mounting dimensions match.
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