This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X100SFA, 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 SI100X100SFA
The AirTAC Airtac SI100 Standard Cylinder SI100X100SFA 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 SAI100X100SFA, 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 → SAI100X100SFA
- 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 SI100X100SFA
The AirTAC SI100X100SFA is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore, 100mm stroke, G1/2 port, and FA flange mounting. Delivering 3927 N push force at 0.5 MPa, it is replaced by the SAI100X100SFA. This direct successor matches the exact ISO 15552 mounting interface, bore, output force, and port size, fitting existing fixtures perfectly.
The SAI upgrade features a revised piston seal with two Y-shaped one-way elements for low start-up pressure and long life. For load holding, note that a standard cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve. The SAI family also adds SAIL, SAIF, and BSAI lock variants.
Airtac SI100 Standard Cylinder SI100X100SFA Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X100SFA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X100SFA |
| 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 SAI100X100SFA 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 SAI100X100SFA 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 SI100X100SFA
| 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 SI100X100SFA Is Used
Heavy Press Clamping
Secures heavy steel plates in machining fixtures using 3927 N of thrust at 0.5 MPa, guided by the FA flange to resist offset loads.
Logistics Diverters
Actuates heavy-duty routing gates on high-throughput packaging lines, benefiting from the 30-800 mm/s speed range.
Replacing the Airtac SI100 Standard Cylinder SI100X100SFA with the SAI100X100SFA
To replace the SI100X100SFA, order the SAI100X100SFA. Verify the ISO 15552 FA flange interface, 100mm stroke, G1/2 port, and the -S magnet for CS1-B/DS1-B switches (the SAI uses current AirTAC switches). Sizing both ways: a neighbouring 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore yields 6136 N. If your stroke was 300mm or longer, add a guide to prevent rod bending from side loads. For dead-load holding, the cushion only decelerates; select the SAIL or BSAI lock variant, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X100SFA
- ✓ 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 SI100X100SFA FAQ
Yes, the SI100X100SFA is discontinued. The direct replacement is the SAI100X100SFA. It shares the identical ISO 15552 mounting interface, 100mm bore, 100mm stroke, G1/2 port, and FA flange, fitting existing mounts seamlessly.
This double-acting cylinder features a G1/2 port. 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 max of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X100SFA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X100SFA replacement — usually within 7-8 hours.