This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X15S, 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 SI100X15S
The AirTAC Airtac SI100 Standard Cylinder SI100X15S 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 SAI100X15S, 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 → SAI100X15S
- 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 SI100X15S
The AirTAC SI100X15S 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. The direct replacement is the SAI100X15S, matching the interface, bore, stroke, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI variants the SI lacked.
Airtac SI100 Standard Cylinder SI100X15S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X15S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X15S |
| 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 SAI100X15S 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 SAI100X15S 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 SI100X15S
| 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 SI100X15S Is Used
Short-Stroke Clamping
Ideal for high-force 3927 N clamping of heavy castings in machining centers where a brief 15mm travel secures the part.
Press Fit Operations
Provides steady 5497 N push force at 0.7 MPa to seat bearings or pins in automated assembly lines without long stroke requirements.
Heavy Spot Welding
Delivers robust 801 kgf max force to hold thick steel sheets firmly against a spot welding gun tip in robotic fabrication cells.
Replacing the Airtac SI100 Standard Cylinder SI100X15S with the SAI100X15S
To replace the SI100X15S, order the SAI100X15S. Confirm the ISO 15552 mounting interface, the 15mm stroke, the G1/2 port (PT/G/NPT thread), and the -S magnet for CS1-B/DS1-B switches. Sizing down, an 80mm bore gives 2513 N push at 0.5 MPa; sizing up, a 125mm bore yields 6136 N. 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 variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X15S
- ✓ 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 SI100X15S FAQ
Yes, the SI100X15S is discontinued. The direct replacement is the SAI100X15S. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 15mm stroke, output force, G1/2 port, and mounting fixtures.
The G1/2 port bore delivers a push of 3927 N and pull of 3681 N at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N at 0.9 MPa, and a max force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X15S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X15S replacement — usually within 7-8 hours.