This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X300FTC, 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 SI100X300FTC
The AirTAC Airtac SI100 Standard Cylinder SI100X300FTC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 300mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X300FTC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke300 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X300FTC
- 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 SI100X300FTC
The AirTAC SI100X300FTC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore, 300mm stroke, and FTC trunnion mount. Delivering 3927N push force at 0.5MPa, it is replaced by the SAI100X300FTC. This direct upgrade matches the exact G1/2 port, M20x1.5 rod thread, and 36mm cushions. As this SKU lacks the -S magnet, it cannot accept a sensor.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent in the SI line.
Airtac SI100 Standard Cylinder SI100X300FTC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X300FTC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X300FTC |
| Bore size | Ø100 mm |
| Stroke | 300 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 SAI100X300FTC 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 SAI100X300FTC 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 SI100X300FTC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SI100X300FTC Is Used
Heavy Material Transfer
Drives robust pallet stops and heavy product diverters on high-capacity conveyor lines using its 3927N push force at 0.5MPa.
Machinery Actuation
Provides the long 300mm stroke and rigid FTC trunnion mounting required to actuate large clamps and tooling platforms in CNC cells.
Replacing the Airtac SI100 Standard Cylinder SI100X300FTC with the SAI100X300FTC
To replace the SI100X300FTC, order the SAI100X300FTC. Verify the ISO 15552 FTC trunnion interface, 100mm bore, 300mm stroke, G1/2 port, and thread type (PT/G/NPT). Because this is a no-S SKU, it cannot support magnetic sensing; if position detection is needed, switch to an SAI100X300S model and use current AirTAC switches. Sizing both ways: a neighboring 80mm bore yields 2513N [email protected], while the 125mm bore yields 6136N. For the 300mm stroke, use external guides to prevent rod-bending side loads. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X300FTC
- ✓ 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 SI100X300FTC FAQ
Yes, the AirTAC SI100X300FTC is discontinued. The direct replacement is the SAI100X300FTC. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 100mm bore, 300mm stroke, output force, G1/2 port, and FTC trunnion mounting.
The 100mm bore features a G1/2 air port. Force output is 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. It operates at 30-800mm/s with 36mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X300FTC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X300FTC replacement — usually within 7-8 hours.