This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X560, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SI40 Standard Cylinder SI40X560
The AirTAC Airtac SI40 Standard Cylinder SI40X560 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 560mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X560, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke560 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X560
- 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 SI40 Standard Cylinder SI40X560
The AirTAC SI40X560 is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 560mm stroke. Delivering 628N push force at 0.5MPa via a G1/4 port, it is replaced by the SAI40X560. This direct upgrade shares identical ISO 15552 mounting, stroke and force. The SAI uses an upgraded piston seal with two Y-shaped elements for low start-up pressure.
This non-magnet SKU cannot take a sensor, unlike legacy CS1-B/DS1-B switches. The SAI family adds SAIL, SAIF and BSAI lock variants absent in the SI line. For high temps, Viton H seals raise the limit to 150C. The 560mm stroke requires external guides to prevent rod bending.
Airtac SI40 Standard Cylinder SI40X560 Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X560 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X560 |
| Bore size | Ø40 mm |
| Stroke | 560 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, 27 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI40X560 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / 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 | |
The SAI40X560 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI40 Standard Cylinder SI40X560
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×560 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SI40 Standard Cylinder SI40X560 Is Used
Material Diversion
Drives diverter arms on packaging lines using 628N push force, smoothly routing boxes at 30-800 mm/s.
Parts Ejection
Ejects machined components from fixtures, relying on adjustable 27mm air cushions to decelerate at stroke end.
Replacing the Airtac SI40 Standard Cylinder SI40X560 with the SAI40X560
To replace the SI40X560, order the SAI40X560, confirming the ISO 15552 interface, 40mm bore, 560mm stroke, G1/4 port and mounting. This non-magnet model cannot accept a sensor. For sizing, a 32mm bore yields 402N push at 0.5MPa, while a 50mm bore yields 982N. Note that a plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant. At 560mm stroke, use external guides to prevent rod bending side-loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X560
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI40 Standard Cylinder SI40X560 FAQ
Yes, the SI40X560 is discontinued. The direct replacement is the SAI40X560. It shares the same ISO 15552 mounting interface, 40mm bore, 560mm stroke, force, G1/4 port and accessories, fitting existing fixtures perfectly.
The 40mm bore features a G1/4 port and M12x1.25 rod thread. Forces are: 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, 1130N push at 0.9MPa, and a theoretical max of 128kgf at 1.0MPa. Speed is 30-800 mm/s.
Request a Quote for the SAI40X560
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X560 replacement — usually within 7-8 hours.