This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X60, 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 SI40X60
The AirTAC Airtac SI40 Standard Cylinder SI40X60 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 60mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X60, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke60 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X60
- 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 SI40X60
The AirTAC SI40X60 is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 60mm stroke, delivering 628N push force at 0.5MPa. The direct replacement is the SAI40X60, matching the G1/4 port, M12x1.25 thread, and ISO 15552 mounting interface exactly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this specific SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors.
Airtac SI40 Standard Cylinder SI40X60 Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X60 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X60 |
| Bore size | Ø40 mm |
| Stroke | 60 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 SAI40X60 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 SAI40X60 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 SI40X60
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×60 | 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 SI40X60 Is Used
Compact Ejection
Ideal for ejecting small molded parts on a 60mm stroke, utilizing the 628N push force at 0.5MPa to reliably clear tooling.
Gate Diversion
Drives short-stroke sorting gates along packaging lines, where the 32kg vertical lift capacity handles light product redirection.
Clamp Actuation
Secures small workpieces in machining fixtures, providing stable holding via the 16mm rod within the ISO 15552 profile barrel.
Replacing the Airtac SI40 Standard Cylinder SI40X60 with the SAI40X60
To replace the SI40X60, order the SAI40X60 and verify your ISO 15552 mounting fixture, G1/4 port, and M12x1.25 rod thread. This non-magnetic SKU cannot take a sensor; order a -S variant if position sensing is needed. Sizing both ways: a 32mm bore yields 402N push, while a 50mm bore yields 982N push at 0.5MPa. For load holding on air loss, note the cushion only decelerates; use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X60
- ✓ 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 SI40X60 FAQ
Yes, the SI40X60 is discontinued. The direct replacement is the SAI40X60. It shares the exact same ISO 15552 mounting interface, 40mm bore, 60mm stroke, output force, and G1/4 port, fitting existing fixtures perfectly.
The 40mm bore features a G1/4 air port. It generates 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, 1130N push at 0.9MPa, and a maximum theoretical force of 128kgf at 1.0MPa.
Request a Quote for the SAI40X60
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X60 replacement — usually within 7-8 hours.