This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X350FA, 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 SI100X350FA
The AirTAC Airtac SI100 Standard Cylinder SI100X350FA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 350mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X350FA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke350 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X350FA
- 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 SI100X350FA
The AirTAC SI100X350FA is a discontinued double-acting ISO 15552 profile cylinder with an FA flange mount. Delivering 3927 N push at 0.5 MPa through a 100 mm bore and G1/2 port, it is replaced by the SAI100X350FA. This direct successor matches the stroke, force, and mounting interface exactly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU lacks a magnet, so it cannot take CS1-B/DS1-B sensors. For high heat, Viton H seals extend operation to 150 C.
Airtac SI100 Standard Cylinder SI100X350FA Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X350FA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X350FA |
| Bore size | Ø100 mm |
| Stroke | 350 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 SAI100X350FA 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 SAI100X350FA 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 SI100X350FA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×350 | 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 SI100X350FA Is Used
Heavy Press Operations
Applies 3927 N of push force at 0.5 MPa for seating bearings and forming heavy components on automated lines.
Pallet Transfer Stops
Uses the FA flange mount to halt 200 kg vertical loads securely in distribution hubs when paired with external guides.
Large Part Diversion
Handles the 350 mm stroke to push bulky packages across wide conveyor belts without requiring intermediate extensions.
Replacing the Airtac SI100 Standard Cylinder SI100X350FA with the SAI100X350FA
To replace this SI with the SAI100X350FA, verify the 100 mm bore, 350 mm stroke, G1/2 port, and FA flange. Because this unit lacks the -S magnet, it cannot accept position sensors. The 350 mm stroke demands external guides to prevent rod bending and side-load wear. For sizing, the 80 mm bore yields 2513 N push at 0.5 MPa, while the 125 mm bore offers 6136 N. Remember, a plain cylinder drifts on air loss; use a pilot check valve or the SAIL/BSAI lock variant to hold loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X350FA
- ✓ 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 SI100X350FA FAQ
Yes, the SI100X350FA is discontinued. The direct replacement is the SAI100X350FA. It shares the identical ISO 15552 mounting interface, 100 mm bore, 350 mm stroke, G1/2 port, and FA flange, fitting existing fixtures perfectly.
The G1/2 port feeds a 100 mm bore yielding 3927 N push and 3681 N pull at 0.5 MPa. At 0.7 MPa push is 5497 N, reaching 7068 N at 0.9 MPa. The theoretical max force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X350FA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X350FA replacement — usually within 7-8 hours.