This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X650SH, 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 SI100X650SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 650mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X650SH, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100X650SH is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 650mm stroke. Delivering 3927N push force at 0.5MPa via a G1/2 port, it is replaced by the SAI100X650SH. This direct successor matches the exact mounting, force, and dimensions.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. The -H code specifies Viton seals for 0-150C heat. The -S magnet fits CS1-B/DS1-B sensors.
| Model | Airtac SI100 Standard Cylinder SI100X650SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X650SH |
| Bore size | Ø100 mm |
| Stroke | 650 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 SAI100X650SH 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 SAI100X650SH 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. |
| ×650 | 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).
Pushes heavy molded parts out of a 100mm bore press using 3927N at 0.5MPa, with the 650mm stroke clearing the machine bed.
Shifts heavy gates near ovens using the -H Viton seal rated for 0-150C, while the 100mm profile barrel resists industrial impact.
To replace the SI100X650SH, order the SAI100X650SH. Verify the ISO 15552 mounting interface, 650mm stroke, G1/2 port, and M20x1.5 rod thread. The 100mm bore yields 3927N push at 0.5MPa; sizing down to 80mm drops this to 2513N. For 650mm strokes, use external guides to prevent rod bending and side loads. This -S model takes CS1-B/DS1-B sensors. The -H Viton seal handles 0-150C. Air cushions only decelerate; use SAIL or BSAI lock variants for load holding.
Replacement checklist
Yes, the AirTAC SI100X650SH is discontinued. The direct replacement is the SAI100X650SH. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 650mm stroke, G1/2 port, and mounting interface.
This double-acting cylinder uses a G1/2 port. At 0.5MPa it provides 3927N push and 3681N pull. At 0.7MPa push is 5497N, and 7068N at 0.9MPa. The theoretical maximum force is 801kgf at 1.0MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X650SH replacement — usually within 7-8 hours.