This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X350SH, 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 SI100X350SH
The AirTAC SI100 Standard Cylinder SI100X350SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 350mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X350SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke350 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X350SH
- 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 SI100X350SH
The AirTAC SI100X350SH is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 350mm stroke. It delivers 3927N push and 3681N pull at 0.5MPa, features a G1/2 port, and includes a high-temp Viton H seal (0-150C) plus a piston magnet for CS1-B/DS1-B sensors. You must order the direct replacement SAI100X350SH, which matches the exact ISO 15552 mounting interface, bore, stroke, force, and port.
The SAI upgrade uses two Y-shaped one-way piston seals for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI100 Standard Cylinder SI100X350SH Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X350SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X350SH |
| Bore size | Ø100 mm |
| Stroke | 350 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 SAI100X350SH 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 SAI100X350SH 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 SI100X350SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×350 | 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 SI100X350SH Is Used
Heavy Stamping Press
Drives upper dies with 3927N push at 0.5MPa, utilizing the 350mm stroke to clear large workpieces during heavy-duty metal forming.
Pallet Dispenser
Indexes empty pallets out of a vertical magazine, where the 100mm bore provides the necessary force to overcome stack friction and weight.
High-Temp Ejector
Ejects molded parts from heated environments up to 150C, relying on the Viton H seals to maintain integrity without degrading.
Replacing the Airtac SI100 Standard Cylinder SI100X350SH with the SAI100X350SH
To replace this SI100X350SH, order the SAI100X350SH. Verify your ISO 15552 mounting interface (LB, FA, TC, etc.), the 350mm stroke, the G1/2 port, and the magnet (-S). The SAI uses current AirTAC switches instead of the legacy CS1-B/DS1-B. Because this is a 350mm stroke, use external guides to prevent rod bending and side-load damage. If stepping down to an 80mm bore yields 2513N push at 0.5MPa, while a 125mm bore gives 6136N. Remember, a plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X350SH
- ✓ 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 SI100X350SH FAQ
Yes, the SI100X350SH is discontinued. The direct replacement is the SAI100X350SH. It is dimensionally interchangeable per the ISO 15552 mounting interface, maintaining the same 100mm bore, 350mm stroke, force, G1/2 port, and mounting fixtures.
The G1/2 port is fixed by the 100mm bore. At 0.5MPa it provides 3927N push and 3681N pull. At 0.7MPa push is 5497N, and at 0.9MPa it is 7068N. The theoretical maximum force is 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X350SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X350SH replacement — usually within 7-8 hours.