Airtac SAI40 Standard Air Cylinder SAI40X55
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X55 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 55mm 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
- Stroke55 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 SAI40X55
The AirTAC SAI40X55 is a double-acting ISO 15552 profile cylinder featuring a 40mm bore and a 55mm stroke. It generates 628N of push force and 528N of pull force at 0.5 MPa. This specific 55mm stroke length is ideal for short-travel clamping, ejecting, and indexing tasks where a standard 50mm or 80mm movement would be excessive.
Built with an extruded aluminum barrel, this unit incorporates a standard carbon steel piston rod for durable service in general-purpose automation. It features a PT tapered port thread and adjustable air cushions at both ends to decelerate the piston smoothly. For high-temperature environments up to 70 C, the standard TPU seals can be swapped for Viton (H) or NBR (N) variants.
Airtac SAI40 Standard Air Cylinder SAI40X55 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X55 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 55 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 SAI40X55
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×55 | 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 SAI40X55 Is Used
Short-Stroke Clamping
Ideal for holding lightweight workpieces securely in milling or drilling fixtures where full stroke extension is unnecessary.
Package Ejection
Provides a rapid 55mm push to divert or eject small cartons from a conveyor line without taking up excessive space.
Component Insertion
Delivers precise downward force to press bushings or bearings into housings on automated assembly lines.
Is the Airtac SAI40 Standard Air Cylinder SAI40X55 the Right Cylinder?
Choose this 40mm bore when an application requires more force than the 32mm version (402N at 0.5 MPa) but lacks the physical space for a 50mm unit (982N at 0.5 MPa). The 55mm stroke is a custom intermediate length, perfect for optimizing cycle timing in compact machinery. Because the stroke is under 300mm, side-load stress on the rod bearing is minimal, though external guides are still recommended for heavy off-center loads.
This model uses a G1/4 port and an M12x1.25 rod thread. It is dimensionally interchangeable per ISO 15552, serving as a drop-in replacement for other standard profile cylinders. Remember that the standard SAI does not hold loads safely upon air loss; for fail-safe holding, consider the SAIL or BSAI variant. Mounting accessories include FA/FB flanges and LB foot brackets.
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 SAI40X55 FAQ
At a standard 0.5 MPa operating pressure, the SAI40X55 provides 628N of push force and 528N of pull force. At 0.7 MPa, the push force increases to 879N.
Yes, the SAI40X55 is a genuine ISO 15552 profile cylinder, making its mounting interface and envelope dimensions interchangeable with other ISO 15552 standard cylinders.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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