This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX15S, 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 SI100AX15S
The AirTAC Airtac SI100 Standard Cylinder SI100AX15S 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 SAI100AX15S, 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 → SAI100AX15S
- 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 SI100AX15S
The AirTAC SI100AX15S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 15mm stroke. It delivers 3927N push force at 0.5MPa through a G1/2 port. The direct replacement is the SAI100AX15S, which shares identical ISO 15552 mounting dimensions, stroke, output force, and porting to fit existing fixtures directly.
This SAI upgrade introduces an improved piston seal with two Y-shaped one-way elements for longer life and lower start-up pressure. Your SI100AX15S uses a SUS420J2 stainless steel rod (-A) and a magnet (-S) for legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100AX15S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX15S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX15S |
| 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 SAI100AX15S 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 SAI100AX15S 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 SI100AX15S
| 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 SI100AX15S Is Used
Short-Stroke Clamping
Ideal for high-force 3927N clamping of heavy metal castings in machining centers using the 15mm stroke.
Press Fit Assembly
Drives bearings or pins into housings on automated assembly lines, utilizing the 100mm bore power.
Heavy Duty Holding
Secures large fabricated steel frames during welding operations, relying on the 2356N safe load.
Replacing the Airtac SI100 Standard Cylinder SI100AX15S with the SAI100AX15S
To replace the SI100AX15S, order the SAI100AX15S, confirming the ISO 15552 interface, 100mm bore, 15mm stroke, G1/2 port, and mounting accessory. The -A rod is SUS420J2 stainless steel, and -S denotes the magnet for current AirTAC switches (replacing legacy CS1-B/DS1-B). If you need more force, the 125mm bore yields 6136N at 0.5MPa; if less is needed, the 80mm bore provides 2513N. Note that a plain cylinder drifts on air loss as cushions only decelerate; for load holding, use the SAIL or BSAI lock variant, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX15S
- ✓ 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 SI100AX15S FAQ
Yes, the SI100AX15S is discontinued. The direct replacement is the SAI100AX15S. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 15mm stroke, force, G1/2 port, and mounting interface.
It features a G1/2 port and delivers a push force of 3927N and pull of 3681N at 0.5MPa. At 0.7MPa push is 5497N, and 7068N at 0.9MPa. The theoretical maximum force is 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX15S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX15S replacement — usually within 7-8 hours.