This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X110FA, 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 SI40X110FA
The AirTAC Airtac SI40 Standard Cylinder SI40X110FA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 110mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X110FA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke110 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X110FA
- 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 SI40X110FA
The AirTAC SI40X110FA is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 110mm stroke. It delivers 628N push force at 0.5MPa via a G1/4 port. The direct replacement is the SAI40X110FA, matching the bore, stroke, force, port, and FA flange mounting.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. Note this SKU lacks a magnet, so it cannot take a CS1-B/DS1-B sensor.
Airtac SI40 Standard Cylinder SI40X110FA Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X110FA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X110FA |
| Bore size | Ø40 mm |
| Stroke | 110 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 SAI40X110FA 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 SAI40X110FA 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 SI40X110FA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×110 | 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 SI40X110FA Is Used
Clamp Actuation
Provides reliable 628N push force at 0.5MPa for securing medium workpieces during machining operations.
Package Diverting
Drives 110mm stroke diverting arms to route boxes on assembly lines using the FA flange mount.
Gate Control
Operates lightweight access gates or material stops with a 32kg safe vertical lift capacity.
Replacing the Airtac SI40 Standard Cylinder SI40X110FA with the SAI40X110FA
To replace the SI40X110FA, order the SAI40X110FA. Confirm the ISO 15552 FA flange interface, 40mm bore, 110mm stroke, G1/4 port (PT/G/NPT thread), and lack of magnet. If sensing is needed, choose an -S SAI variant. For higher force, the 50mm bore yields 982N push at 0.5MPa; for less, the 32mm yields 402N. The cushion only decelerates; it does not hold load on air loss. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X110FA
- ✓ 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 SI40X110FA FAQ
Yes, the AirTAC SI40X110FA is discontinued. The direct replacement is the SAI40X110FA. It shares the identical ISO 15552 mounting interface, 40mm bore, 110mm stroke, output force, G1/4 port, and FA flange, fitting existing fixtures perfectly.
This double-acting cylinder has 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 theoretical max of 128kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI40X110FA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X110FA replacement — usually within 7-8 hours.