This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X100SH, 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 SI40X100SH
The AirTAC Airtac SI40 Standard Cylinder SI40X100SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 100mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X100SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke100 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X100SH
- 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 SI40X100SH
The AirTAC SI40X100SH is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 100mm stroke, delivering 628N push force at 0.5MPa through a G1/4 port. The direct replacement is the SAI40X100SH, matching the interface, bore, stroke, force, port and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This SI40X100SH variant includes a high-temp Viton H seal (0-150C) and a magnetic piston for CS1-B/DS1-B switches.
Airtac SI40 Standard Cylinder SI40X100SH Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X100SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X100SH |
| Bore size | Ø40 mm |
| Stroke | 100 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 SAI40X100SH 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 SAI40X100SH 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 SI40X100SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 SI40X100SH Is Used
Hot End Ejection
Uses the Viton H high-temperature seal to push parts out of 150C molding environments without degrading.
Transfer Diverters
Provides 628N push at 0.5MPa to reliably deflect medium-weight packages on ISO 15552 mounting fixtures.
Replacing the Airtac SI40 Standard Cylinder SI40X100SH with the SAI40X100SH
To replace the SI40X100SH, order the SAI40X100SH, confirming the ISO 15552 mounting interface, 40mm bore, 100mm stroke, G1/4 port, Viton H seal and magnet for current AirTAC switches. If you need more force, the 50mm bore offers 982N push at 0.5MPa; if less is needed, the 32mm bore gives 402N. Because this is a plain cylinder, it will not hold a load without live air—the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAI family also adds the SAIF self-valve option.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X100SH
- ✓ 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 SI40X100SH FAQ
Yes, the SI40X100SH is discontinued. The direct replacement is the SAI40X100SH. It is dimensionally interchangeable per ISO 15552, keeping the same 40mm bore, 100mm stroke, 628N force, G1/4 port and mounting accessories.
The 40mm bore has a G1/4 air port and M12x1.25 rod thread. 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI40X100SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X100SH replacement — usually within 7-8 hours.