This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40AX60, 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 SI40AX60
The AirTAC SI40 Standard Cylinder SI40AX60 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 SAI40AX60, 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 → SAI40AX60
- 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 SI40AX60
The AirTAC SI40AX60 is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 60mm stroke. It delivers 628N push and 528N pull at 0.5MPa through a G1/4 port. The direct replacement is the SAI40AX60, matching the bore, stroke, force, port, and ISO 15552 mounting interface.
Because this SKU lacks the -S magnet, it cannot accept legacy CS1-B/DS1-B sensors. The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure, and adds SAIL, SAIF, and BSAI variants.
Airtac SI40 Standard Cylinder SI40AX60 Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40AX60 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40AX60 |
| 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 SAI40AX60 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 SAI40AX60 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 SI40AX60
| 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 SI40AX60 Is Used
Compact Ejection
Ideal for pushing small parts out of machining fixtures using its 628N push force and 60mm stroke.
Package Diverting
Actuates routing gates on 40mm bore conveyors where a short 60mm movement is sufficient.
Small Pressing
Performs light-duty pressing or seating of electronic connectors with a 528N pull capacity.
Replacing the Airtac SI40 Standard Cylinder SI40AX60 with the SAI40AX60
To replace the SI40AX60, order the SAI40AX60. Confirm the ISO 15552 mounting interface, the 60mm stroke, and the G1/4 port (available in PT, G, or NPT). This SKU has no magnet (-S), so it cannot support position sensing; the SAI family uses current AirTAC switches. 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—so use an external rod lock or pilot check valve for load holding. The SUS420J2 stainless rod (-A) suits corrosive settings.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40AX60
- ✓ 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 SI40AX60 FAQ
Yes, the SI40AX60 is discontinued. The direct replacement is the SAI40AX60, which shares the exact same ISO 15552 mounting interface, 40mm bore, 60mm stroke, G1/4 port, and output force.
The 40mm bore features a G1/4 port and delivers 628N push / 528N pull at 0.5MPa, 879N push at 0.7MPa, 1130N push at 0.9MPa, and a theoretical max of 128kgf at 1.0MPa. Operating speed is 30-800mm/s.
Request a Quote for the SAI40AX60
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40AX60 replacement — usually within 7-8 hours.