This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX200H, 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.

The AirTAC Airtac SI100 Standard Cylinder SI100BX200H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 200mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX200H, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100BX200H is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 200mm stroke. It delivers 3927N push force at 0.5MPa and features a SUS304 stainless rod and Viton H seals for 0-150C high-temp environments. The direct replacement is the SAI100BX200H, matching the G1/2 port, M20x1.5 thread, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. Because this SKU lacks a magnet (-S), it cannot accept a sensor switch.
| Model | Airtac SI100 Standard Cylinder SI100BX200H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX200H |
| Bore size | Ø100 mm |
| Stroke | 200 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 SAI100BX200H carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAI100BX200H produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×200 | 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).
Applies 3927N of force at 0.5MPa for clamping composite panels in heated molds, utilizing the Viton H seal to withstand 150C ambient heat.
Drives heavy tooling slides in wash-down zones, relying on the SUS304 stainless piston rod to resist rust while moving 200mm strokes.
To replace the SI100BX200H, order the SAI100BX200H. Verify the ISO 15552 mounting interface, 100mm bore, 200mm stroke, G1/2 port, and Viton H high-temperature seal. This non-magnetic SKU cannot take a switch; order an -S variant if you need CS1-B/DS1-B sensing. Sizing both ways: the 80mm bore yields 2513N push at 0.5MPa, while the 125mm bore yields 6136N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. For 200mm strokes, ensure guide alignment to prevent rod bending.
Replacement checklist
Yes, the SI100BX200H is discontinued. The direct replacement is the SAI100BX200H. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 200mm stroke, G1/2 port, and mounting interface.
It features a G1/2 port. The thrust ratings are: 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical maximum of 801kgf at 1.0MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX200H replacement — usually within 7-8 hours.