This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX150S, 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 SI100AX150S
The AirTAC Airtac SI100 Standard Cylinder SI100AX150S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 150mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX150S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke150 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX150S
- 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 SI100AX150S
The AirTAC SI100AX150S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 150mm stroke. Featuring a SUS420J2 stainless piston rod and a built-in magnet for CS1-B/DS1-B sensors, it delivers 3927 N push force at 0.5 MPa through a G1/2 port. AirTAC replaced this EOL unit with the SAI100AX150S, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, and force.
The SAI replacement introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. If your fixture requires positive load holding, note that the standard cylinder drifts on air loss—the cushion only decelerates—so consider the SAIL or BSAI lock variants.
Airtac SI100 Standard Cylinder SI100AX150S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX150S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX150S |
| Bore size | Ø100 mm |
| Stroke | 150 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 SAI100AX150S 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 SAI100AX150S 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 SI100AX150S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×150 | 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 SI100AX150S Is Used
Heavy-Duty Pressing
Drives large stamping and forming presses requiring up to 5497 N of thrust at 0.7 MPa, utilizing the robust 25mm piston rod.
Stainless Rod Washdown
Ideal in food or chemical processing fixtures where the SUS420J2 stainless rod resists corrosion during high-pressure washdowns.
Replacing the Airtac SI100 Standard Cylinder SI100AX150S with the SAI100AX150S
To replace the discontinued SI100AX150S, order the SAI100AX150S. It is a direct per the ISO 15552 mounting interface dimensions, matching the 100mm bore, 150mm stroke, G1/2 port, and M20x1.5 rod thread. Retain your existing mounting accessories and confirm the -S magnet for current AirTAC switches (legacy used CS1-B/DS1-B). The -A rod specifies SUS420J2 stainless steel for corrosion resistance. If you need to size both ways, a neighboring 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore offers 6136 N. Because this is a plain double-acting cylinder, it cannot hold a load without live air; the 36mm adjustable cushions only decelerate. For suspended loads, use an external pilot check valve or explore the SAIL air-released lock and BSAI clamp-lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX150S
- ✓ 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 SI100AX150S FAQ
Yes, the AirTAC SI100AX150S is discontinued. The direct replacement is the SAI100AX150S. It matches the ISO 15552 mounting interface, 100mm bore, 150mm stroke, output force, and G1/2 port, fitting existing fixtures perfectly while upgrading the piston seal.
It features a G1/2 air port and delivers a push force of 3927 N and pull of 3681 N at 0.5 MPa. At 0.7 MPa push is 5497 N, and 7068 N at 0.9 MPa. The theoretical max force is 801 kgf at 1.0 MPa, with a speed range of 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX150S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX150S replacement — usually within 7-8 hours.