This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX15, 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 SI100AX15
The AirTAC Airtac SI100 Standard Cylinder SI100AX15 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 15mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX15, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke15 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX15
- 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 SI100AX15
The AirTAC SI100AX15 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 15mm stroke. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. Because this stroke is non-standard, the direct replacement is the current-production SAI100AX15, which maintains the exact same interface, force, and mounting dimensions.
The SAI upgrade features a revised piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This specific SKU uses an SUS420J2 stainless steel rod (the -A option) for corrosion resistance, but lacks a magnet, meaning it cannot accept position switches.
Airtac SI100 Standard Cylinder SI100AX15 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX15 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX15 |
| Bore size | Ø100 mm |
| Stroke | 15 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 SAI100AX15 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 SAI100AX15 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 SI100AX15
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×15 | 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 SI100AX15 Is Used
Short-Stroke Clamping
Ideal for high-force, short-travel clamping of heavy steel plates in machining fixtures using the robust SUS420J2 stainless rod.
Press Fit Operations
Provides reliable 3927 N push force at 0.5 MPa for seating bearings or pins in automated assembly lines without needing full stroke length.
Heavy Duty Ejection
Delivers rapid ejection of molded components from machinery, leveraging the 30-800 mm/s speed range and 100mm bore power.
Replacing the Airtac SI100 Standard Cylinder SI100AX15 with the SAI100AX15
To replace the SI100AX15, order the SAI100AX15. Verify your ISO 15552 mounting fixtures, the G1/2 air port, and the M20x1.5 rod thread. Because this is a non-standard 15mm stroke, confirm the exact extended length. This SKU has no magnet (-S), so it cannot support legacy CS1-B/DS1-B sensors; if sensing is required, switch to an SAI100X*S magnet-equipped model. For sizing alternatives, a neighboring 80mm bore yields 2513 N push at 0.5 MPa, while the 125mm bore offers 6136 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so for load holding consider the SAIL lock, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX15
- ✓ 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 SI100AX15 FAQ
Yes, the SI100AX15 is discontinued. The direct replacement is the SAI100AX15. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 15mm stroke, G1/2 port, and mounting interface.
It features a G1/2 port. The force output is 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N push at 0.9 MPa, and a theoretical maximum of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX15
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX15 replacement — usually within 7-8 hours.