This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX800S, 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 SI100AX800S
The AirTAC Airtac SI100 Standard Cylinder SI100AX800S 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 SAI100AX800S, 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 → SAI100AX800S
- 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 SI100AX800S
The AirTAC SI100AX800S is a discontinued double-acting ISO 15552 profile cylinder featuring an extruded aluminum barrel, a 100 mm bore, and an 800 mm stroke. It delivers a push force of 3927 N at 0.5 MPa via its G1/2 port. AirTAC replaced this legacy unit with the SAI100AX800S, a direct replacement retaining the exact ISO 15552 mounting interface, bore, stroke, output force, and port size.
The SAI upgrade introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This SI100AX800S unit includes the SUS420J2 stainless steel rod option (-A) and a piston magnet (-S) for CS1-B/DS1-B switches.
Airtac SI100 Standard Cylinder SI100AX800S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX800S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX800S |
| 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 SAI100AX800S 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 SAI100AX800S 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 SI100AX800S
| 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 SI100AX800S Is Used
Heavy Material Transfer
Drives heavy pallets along extended conveyor lines, utilizing the 3927 N push force to overcome friction over the full 800 mm travel distance.
Pallet Positioning
Shifts loaded pallets into wrapping or strapping stations, where the 200 kg vertical lift capacity and long stroke handle substantial packaging loads.
Large Press Feeding
Feeds bulky raw materials into large hydraulic presses, relying on the SUS420J2 stainless rod to resist corrosion in harsh industrial environments.
Replacing the Airtac SI100 Standard Cylinder SI100AX800S with the SAI100AX800S
To replace the SI100AX800S, order the SAI100AX800S. Confirm the ISO 15552 mounting interface, the 100 mm bore, the 800 mm stroke, the G1/2 port (PT/G/NPT thread options), the SUS420J2 stainless rod (-A), and the magnet (-S). When sizing both ways, a neighboring 80 mm bore yields 2513 N push at 0.5 MPa, while a 125 mm bore yields 6136 N. Note that a plain cylinder does not hold load on air loss; the cushion only decelerates. For load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants. Because the 800 mm stroke exceeds 300 mm, use an external guide to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX800S
- ✓ 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 SI100AX800S FAQ
Yes, the SI100AX800S is discontinued. The direct replacement is the SAI100AX800S. It is dimensionally interchangeable per ISO 15552, matching the bore, stroke, force, G1/2 port, and mounting fixtures.
The bore is 100 mm with 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 maximum of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX800S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX800S replacement — usually within 7-8 hours.