Airtac SAI40 Standard Air Cylinder SAI40AX550
The AirTAC SAI40 Standard Air Cylinder SAI40AX550 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 550mm 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
- Stroke550 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 SAI40AX550
The AirTAC SAI40X550 is a double-acting ISO 15552 profile cylinder engineered to deliver 628 N of push force at 0.5 MPa and 879 N at 0.7 MPa. Featuring a 40 mm bore and 550 mm stroke, this extruded aluminum actuator provides dimensionally interchangeable mounting interfaces for seamless direct replacement of other ISO 15552 cylinders.
This specific configuration incorporates a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. It utilizes PT tapered port threads and lacks a standard magnet, meaning position sensing via CMSE or DMSE switches is not supported without modification.
Airtac SAI40 Standard Air Cylinder SAI40AX550 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX550 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 550 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 SAI40AX550
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×550 | 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 SAI40AX550 Is Used
Package Diversion
Provides the 628 N push force needed to deflect heavy cartons on a 550 mm sorting lane.
Clamp Actuation
Extends fully to position woodworking clamps, with the SUS420J2 rod resisting moisture in raw timber.
Gate Operation
Cycles material handling gates over a 550 mm span, relying on adjustable air cushions to decelerate smoothly.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX550 the Right Cylinder?
Selecting this 40 mm bore over the smaller 32 mm variant upgrades your push force from 402 N to 628 N at 0.5 MPa, while stepping up to the 50 mm bore yields 982 N. At 550 mm of travel, the unsupported piston rod is highly susceptible to bending under side loads; utilizing an external guide rail or a dedicated guided cylinder is strongly recommended to prevent premature rod-bearing wear.
Because this is a standard double-acting cylinder, it relies entirely on continuous air pressure to maintain its position. If air is exhausted or the valve centers, the load will drift; for suspended or vertical loads requiring fail-safe holding, consider the SAIL variant with an air-released lock or an external pilot-operated check valve. To match this unit exactly, specify a 40 mm bore, 550 mm stroke, G1/4 port, PT thread type, and no magnet.
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 SAI40AX550 FAQ
At 0.5 MPa it provides 628 N of push force and 528 N of pull force. When supplied with 0.7 MPa, the push force increases to 879 N.
Yes, the SAI40X550 is dimensionally interchangeable per ISO 15552, meaning it shares standard mounting dimensions with other cylinders in this class. Always confirm your specific port and thread requirements.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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