This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X800SFTC, 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 SI100X800SFTC
The AirTAC Airtac SI100 Standard Cylinder SI100X800SFTC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 800mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X800SFTC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke800 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X800SFTC
- 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 SI100X800SFTC
The AirTAC SI100X800SFTC is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel and adjustable air cushions. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. AirTAC replaced this legacy unit with the SAI100X800SFTC, a direct sharing the exact 100 mm bore, 800 mm stroke, M20x1.5 rod thread, and FTC trunnion mount.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent in the SI line. Your -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X800SFTC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X800SFTC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X800SFTC |
| Bore size | Ø100 mm |
| Stroke | 800 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 SAI100X800SFTC 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 SAI100X800SFTC 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 SI100X800SFTC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×800 | 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 SI100X800SFTC Is Used
Heavy Goods Diversion
Actuates large deflectors on high-throughput parcel lines, utilizing the 3927 N push force to reliably redirect heavy palletized freight.
Pallet Positioning
Provides the long 800 mm travel required to push standardized pallets into wrapping or strapping stations without intermediate transfers.
Automated Press Feed
Drives long-stroke material advancement in stamping presses, where the FTC trunnion mount accommodates alignment shifts during the 800 mm extension.
Replacing the Airtac SI100 Standard Cylinder SI100X800SFTC with the SAI100X800SFTC
To replace the SI100X800SFTC, order the SAI100X800SFTC. It is dimensionally interchangeable per the ISO 15552 mounting interface, matching the 100 mm bore, 800 mm stroke, G1/2 port, and FTC trunnion accessory. If downsizing, a 80 mm bore yields 2513 N push at 0.5 MPa; if upsizing, a 125 mm bore provides 6136 N. Because this is an 800 mm stroke, use an external guide to prevent rod bending and side-load damage. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X800SFTC
- ✓ 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 SI100X800SFTC FAQ
Yes, the SI100X800SFTC is discontinued. The direct replacement is the SAI100X800SFTC. It shares the identical ISO 15552 mounting interface, 100 mm bore, 800 mm stroke, force, G1/2 port, and FTC trunnion mount, fitting existing fixtures perfectly.
This double-acting cylinder features a G1/2 port. It 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 maximum of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X800SFTC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X800SFTC replacement — usually within 7-8 hours.