This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X500FTC, 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 SI100X500FTC
The AirTAC SI100 Standard Cylinder SI100X500FTC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 500mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X500FTC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X500FTC
- 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 SI100X500FTC
The AirTAC SI100X500FTC is a discontinued double-acting ISO 15552 profile cylinder with a 500 mm stroke, delivering 3927 N push force at 0.5 MPa. The direct replacement is the SAI100X500FTC, which matches the bore, stroke, G1/2 port, and FTC trunnion mount exactly. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
This non-magnet SKU cannot accept a sensor, unlike legacy CS1-B/DS1-B switches. The SAI family adds SAIL, SAIF, and BSAI variants the SI lacked.
Airtac SI100 Standard Cylinder SI100X500FTC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X500FTC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X500FTC |
| Bore size | Ø100 mm |
| Stroke | 500 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 SAI100X500FTC 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 SAI100X500FTC 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 SI100X500FTC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×500 | 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 SI100X500FTC Is Used
Heavy Material Transfer
Drives large product loads along assembly conveyors where the 3927 N push force at 0.5 MPa easily overcomes carton friction and transfer resistance.
Pallet Positioning
Stops and indexes heavy pallets at 500 mm stroke, requiring external guide rails to absorb side-load impacts during high-speed 30-800 mm/s actuation.
Press Ejection
Ejects molded or stamped parts from heavy machinery, utilizing the 801 kgf maximum theoretical force for stubborn binds before returning double-acting.
Replacing the Airtac SI100 Standard Cylinder SI100X500FTC with the SAI100X500FTC
To replace the SI100X500FTC, order the SAI100X500FTC. Verify the ISO 15552 mounting interface, 100 mm bore, 500 mm stroke, G1/2 port, and FTC trunnion accessory. Because this SKU lacks the -S magnet, it cannot take a sensor; if position detection is needed, select an SAI100X500S variant. Sizing both ways: the 100 mm bore yields 3927 N push at 0.5 MPa, while the neighboring 80 mm bore gives 2513 N. For this 500 mm stroke, use external guides to prevent rod bending and side-load damage. The air cushion only decelerates; it does not hold the load. For load holding on air loss, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X500FTC
- ✓ 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 SI100X500FTC FAQ
Yes, the SI100X500FTC is discontinued. The direct replacement is the SAI100X500FTC. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 500 mm stroke, G1/2 port, and FTC trunnion mount so it drops directly into existing fixtures.
The G1/2 port bore delivers 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. It operates at 30-800 mm/s with a 36 mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X500FTC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X500FTC replacement — usually within 7-8 hours.