This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X410, 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 SI100X410 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 410mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X410, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100X410 is a discontinued double-acting ISO 15552 profile cylinder. Delivering 3927 N push force at 0.5 MPa through a 100 mm bore and 410 mm stroke, it has been superseded by the SAI100X410. This direct replacement retains the exact ISO 15552 mounting interface, G1/2 port, and 801 kgf maximum force, fitting existing fixtures perfectly.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this non-magnet SKU cannot accept a sensor; legacy CS1-B/DS1-B switches required the -S option. For higher heat, Viton H seals raise the limit to 150 C.
| Model | Airtac SI100 Standard Cylinder SI100X410 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X410 |
| Bore size | Ø100 mm |
| Stroke | 410 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 SAI100X410 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 SAI100X410 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. |
| ×410 | 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 pallets laterally across high-throughput conveyor lines using the 3927 N push force at 0.5 MPa.
Raises material handling gates; the 410 mm stroke provides ample travel while the 200 kg vertical lift capacity handles heavy assemblies.
Ejects formed metal parts from hydraulic presses, utilizing the adjustable 36 mm air cushions to decelerate the 25 mm rod smoothly.
To replace the SI100X410, order the SAI100X410. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), the G1/2 port, and the M20x1.5 rod thread. Because this SKU lacks the -S magnet, it cannot host position sensors; if sensing is needed, select an SAI100X410S. Sizing both ways: the 100 mm bore yields 3927 N push at 0.5 MPa (5497 N at 0.7 MPa), while the neighbouring 80 mm bore provides 2513 N. Air cushions only decelerate the load; they do not hold it. For load holding on air loss, use an external pilot check valve or the SAIL/BSAI lock variant. With a 410 mm stroke, use external guides to prevent rod bending and side-load damage.
Replacement checklist
Yes, the SI100X410 is discontinued. The direct replacement is the SAI100X410. It shares the identical ISO 15552 mounting interface, 100 mm bore, 410 mm stroke, G1/2 port, and output force, so it drops directly into existing machinery.
The G1/2 port feeds a 100 mm bore yielding 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, and a theoretical max of 801 kgf at 1.0 MPa. The 25 mm rod operates at 30-800 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X410 replacement — usually within 7-8 hours.