This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX40, 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 SI100 Standard Cylinder SI100AX40
The AirTAC Airtac SI100 Standard Cylinder SI100AX40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 40mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke40 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX40
- 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 SI100 Standard Cylinder SI100AX40
The AirTAC SI100AX40 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 40mm stroke. Delivering 3927N push force at 0.5MPa via a G1/2 port, it is replaced by the SAI100AX40. This direct successor matches the exact ISO 15552 mounting interface, bore, stroke and output force.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This -A variant uses a SUS420J2 stainless rod, and lacks a magnet so it cannot take a sensor. For higher temps, Viton H seals raise the limit to 150C.
Airtac SI100 Standard Cylinder SI100AX40 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX40 |
| Bore size | Ø100 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI100AX40 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAI100AX40 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI100 Standard Cylinder SI100AX40
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×40 | 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 SI100 Standard Cylinder SI100AX40 Is Used
Heavy-Duty Stamping
Applies 3927N of thrust at 0.5MPa for short 40mm stroke stamping, forming and riveting operations in automated metal fabrication lines.
Pallet Positioning
Shifts heavy loaded pallets or fixtures against hard stops using a robust 100mm bore profile barrel engineered for industrial logistics.
Clamp Actuation
Drives substantial 200kg vertical lift clamping mechanisms where the SUS420J2 stainless rod offers necessary corrosion resistance.
Replacing the Airtac SI100 Standard Cylinder SI100AX40 with the SAI100AX40
To replace the SI100AX40, order the SAI100AX40. Verify the ISO 15552 mounting fixture, the G1/2 port, and the M20x1.5 rod thread. Because this SKU lacks a magnet (-S), it cannot accept CS1-B/DS1-B sensors; if position detection is needed, select a magnet-equipped SAI model. This 100mm bore yields 3927N push at 0.5MPa; sizing down to an 80mm bore gives 2513N. 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 variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX40
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI100 Standard Cylinder SI100AX40 FAQ
Yes, the SI100AX40 is discontinued. The direct replacement is the SAI100AX40. It features the same ISO 15552 mounting interface, 100mm bore, 40mm stroke, G1/2 port and output force, fitting existing fixtures perfectly.
It uses a G1/2 port. The force ratings are: 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical max of 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX40
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX40 replacement — usually within 7-8 hours.