This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X100SFTC, 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 SI100X100SFTC
The AirTAC Airtac SI100 Standard Cylinder SI100X100SFTC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 100mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X100SFTC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke100 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X100SFTC
- 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 SI100X100SFTC
The AirTAC SI100X100SFTC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 100mm stroke, delivering 3927N push force at 0.5MPa via a G1/2 port. AirTAC replaced this legacy unit with the SAI100X100SFTC. This current-production direct maintains the exact ISO 15552 mounting interface, bore, stroke, output force, and port size, fitting existing FTC trunnion fixtures seamlessly.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also introduces SAIL, SAIF, and BSAI lock variants absent in the SI line. Your -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI100 Standard Cylinder SI100X100SFTC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X100SFTC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X100SFTC |
| Bore size | Ø100 mm |
| Stroke | 100 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 SAI100X100SFTC 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 SAI100X100SFTC 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 SI100X100SFTC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×100 | 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 SI100X100SFTC Is Used
Heavy Press Clamping
Secures heavy steel plates in machining centers using 3927N of clamping force at 0.5MPa, leveraging the rigid FTC trunnion mount.
Material Lift Gates
Raises and lowers loaded staging gates, relying on the 36mm adjustable air cushions to decelerate the 100mm bore smoothly.
Replacing the Airtac SI100 Standard Cylinder SI100X100SFTC with the SAI100X100SFTC
To replace the SI100X100SFTC, order the SAI100X100SFTC. Confirm the ISO 15552 interface, 100mm bore, 100mm stroke, G1/2 port (PT/G/NPT thread options), FTC trunnion mount, and -S magnet. Sizing both ways: a 100mm bore yields 3927N push at 0.5MPa, while the neighboring 80mm bore provides 2513N. Note that a plain cylinder drifts on air loss since the cushion only decelerates; for load holding, specify an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. The 25mm rod uses an M20x1.5 thread, and speed ranges 30-800mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X100SFTC
- ✓ 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 SI100X100SFTC FAQ
Yes, the SI100X100SFTC is discontinued. The direct replacement is the SAI100X100SFTC. It is dimensionally interchangeable per ISO 15552, preserving the same bore, stroke, 3927N force, G1/2 port, and FTC mounting interface.
This double-acting cylinder features a G1/2 air port and an M20x1.5 rod thread. It delivers 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical maximum of 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X100SFTC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X100SFTC replacement — usually within 7-8 hours.