Airtac SAI40 Standard Air Cylinder SAI40BX35
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40BX35 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 35mm 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
- Stroke35 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 SAI40BX35
The AirTAC SAI40X35 is a double-acting ISO 15552 profile cylinder engineered for compact actuation, delivering 628N of push force at 0.5 MPa. Its 35mm stroke is tailored for short-travel clamping and ejection tasks. The extruded aluminum barrel omits tie rods, presenting a clean exterior that resists snagging in dynamic setups.
This specific configuration features a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in wet or mildly chemical environments. Fluid supply connects via PT tapered threads, and the barrel includes dual sensor grooves ready for CMSE or DMSE switches if a magnet is added later.
Airtac SAI40 Standard Air Cylinder SAI40BX35 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX35 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 35 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 SAI40BX35
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×35 | 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 SAI40BX35 Is Used
Short-Stroke Clamping
Ideal for securing thin workpieces in machining fixtures where a 35mm travel provides exact clamping without wasting cycle time.
Package Ejection
Provides rapid 628N push force to divert or eject light packages on a packaging line, utilizing the 30-800 mm/s speed range.
Valve Actuation
Suitable for driving mechanical valves or gates over a short 35mm distance in processing plants, relying on the SUS304 rod for environmental durability.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX35 the Right Cylinder?
Choose this 40mm bore when a 32mm variant (402N push at 0.5 MPa) lacks the necessary thrust, but a 50mm bore (982N) would be physically oversized. The 35mm stroke is non-standard but fully supported, offering a precise 5mm extension over the 25mm option to prevent over-travel. Because the stroke is short, rod-bearing bending is negligible, though side loads should always be minimized.
If your machinery loses air pressure, this cylinder cannot hold its load and will drift; apply an external pilot-operated check valve or specify the SAIL variant for positive locking. For ISO 15552 interchangeability, match the 40mm bore, 35mm stroke, PT port threads, and your required mounting accessory (such as an FA flange or LB foot).
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 SAI40BX35 FAQ
At 0.5 MPa operating pressure, the SAI40X35 generates 628N of push force and 528N of pull force. If pressure is increased to 0.7 MPa, the push force reaches 879N.
Yes, the SAI40X35 is dimensionally interchangeable per ISO 15552. You can drop it in as a replacement for other ISO 15552 profile cylinders by matching the 40mm bore, 35mm stroke, and PT port.
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