This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X1420S, 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 SI100X1420S
The AirTAC Airtac SI100 Standard Cylinder SI100X1420S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 1420mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X1420S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke1420 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X1420S
- 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 SI100X1420S
The AirTAC SI100X1420S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 1420mm stroke. It delivers 3927N push and 3681N pull at 0.5MPa via a G1/2 port. AirTAC replaced this legacy unit with the SAI100X1420S, a direct sharing the exact ISO 15552 mounting interface, bore, stroke, force, and port.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The -S suffix means a piston magnet for CS1-B/DS1-B switches; the SAI uses current switches. For high heat, Viton H seals extend temperature to 150C.
Airtac SI100 Standard Cylinder SI100X1420S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X1420S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X1420S |
| Bore size | Ø100 mm |
| Stroke | 1420 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 SAI100X1420S 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 SAI100X1420S 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 SI100X1420S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×1420 | 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 SI100X1420S Is Used
Long-Stroke Diversion
Pushes heavy pallets across wide transfer lines using the 1420mm stroke and 3927N push force at 0.5MPa.
Automated Warehousing
Actuates large storage doors or lifts where the G1/2 port and ISO 15552 interface fit existing fixtures.
Replacing the Airtac SI100 Standard Cylinder SI100X1420S with the SAI100X1420S
To replace the SI100X1420S, order the SAI100X1420S. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), the G1/2 port, and the M20x1.5 rod thread. The 1420mm stroke is under the 1500mm max standard, but at this length you must guide the load externally to prevent rod bending and side-load damage. A plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve, or choose the SAIL or BSAI lock variants. If you need less force, the 80mm bore gives 2513N push; for more, the 125mm bore yields 6136N push at 0.5MPa.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X1420S
- ✓ 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 SI100X1420S FAQ
Yes, the SI100X1420S is discontinued. The direct replacement is the SAI100X1420S. It shares the same ISO 15552 mounting interface, 100mm bore, 1420mm stroke, output force, and G1/2 port, so it drops directly into existing fixtures.
The G1/2 port feeds a 100mm bore yielding 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a max force of 801kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X1420S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X1420S replacement — usually within 7-8 hours.