This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X1600S, 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 SI100 Standard Cylinder SI100X1600S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 1600mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X1600S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100X1600S is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 1600 mm stroke. Generating 3927 N push force at 0.5 MPa, it is replaced directly by the SAI100X1600S. This direct upgrade shares the exact same G1/2 port, M20x1.5 rod thread, and ISO 15552 mounting interface, dropping into existing fixtures without modification.
The SAI replacement upgrades longevity with a two Y-shaped one-way piston seal for low start-up pressure. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. This 1600 mm stroke exceeds the 1500 mm standard maximum, making it a made-to-order item requiring external guides to prevent rod bending.
| Model | Airtac SI100 Standard Cylinder SI100X1600S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X1600S |
| Bore size | Ø100 mm |
| Stroke | 1600 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 SAI100X1600S 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 SAI100X1600S 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. |
| ×1600 | 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).
Drives large pallets across 1600 mm gaps in packaging lines, utilizing the 3927 N push force to overcome guide friction on heavy loads.
Actuates storage pusher arms to transfer inventory between lanes, requiring the robust 100 mm bore and G1/2 air supply for rapid cycling.
Shifts heavy sub-assemblies between workstations, relying on the 36 mm adjustable air cushions to decelerate the 801 kgf capacity mass smoothly.
To replace this SI100X1600S, order the SAI100X1600S keeping the identical 100 mm bore, 1600 mm stroke, G1/2 port, M20x1.5 thread, and -S magnet for CS1-B/DS1-B switches. Because 1600 mm exceeds the 1500 mm standard maximum, this is a non-standard made-to-order stroke; always use external guides to prevent rod bending and side-load damage over such a long distance. If sizing down, the 80 mm bore offers 2513 N push at 0.5 MPa; if sizing up, the 125 mm bore provides 6136 N. A plain cylinder does not hold load on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for secure holding.
Replacement checklist
Yes, the SI100X1600S is discontinued. The direct replacement is the SAI100X1600S, which shares the identical ISO 15552 mounting interface, 100 mm bore, 1600 mm stroke, output force, G1/2 port, and mounting accessories.
The 100 mm bore features a G1/2 port and M20x1.5 rod thread. It delivers 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N push at 0.9 MPa, and a theoretical maximum force of 801 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X1600S replacement — usually within 7-8 hours.