This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X1600STC, 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 SI100X1600STC 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 SAI100X1600STC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100X1600STC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 1600mm stroke. Delivering 3927N push force at 0.5MPa via a G1/2 port, this legacy unit is replaced by the SAI100X1600STC. The SAI direct maintains the exact ISO 15552 mounting interface, TC trunnion, and output force, fitting existing fixtures perfectly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. Note the 1600mm stroke exceeds the 1500mm standard, requiring made-to-order execution. The SAI family also adds SAIL lock, SAIF valve, and BSAI clamp variants absent in the SI line.
| Model | Airtac SI100 Standard Cylinder SI100X1600STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X1600STC |
| 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 SAI100X1600STC 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 SAI100X1600STC 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).
Pushes heavy pallets 1600mm between conveyor lines using 3927N thrust at 0.5 MPa, requiring external guides to prevent rod bending.
Actuates vertical lifting gates or shutters where the 200kg safe vertical lift capacity handles balanced loads reliably.
Ejects formed parts from large presses using the TC trunnion mount to absorb lateral moment loads during the 1600mm ejection stroke.
To replace the SI100X1600STC, order the SAI100X1600STC keeping the S magnet and TC trunnion. Verify the G1/2 port and M20x1.5 rod thread. Because 1600mm exceeds the 1500mm max standard stroke, this is a non-standard made-to-order item; add external guides to prevent rod bending over this long 1600mm extension. Sizing both ways: a neighbouring 80mm bore yields 2513N [email protected], while a 125mm bore yields 6136N. The plain cylinder does not hold load without live air (cushions only decelerate), so for holding use the SAIL or BSAI lock variants, or an external pilot check valve. The -S magnet supports CS1-B/DS1-B sensors (SAI uses current AirTAC switches).
Replacement checklist
Yes, the SI100X1600STC is discontinued. The direct replacement is the SAI100X1600STC. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 1600mm stroke, G1/2 port, TC mount, and output force so it fits existing fixtures.
The G1/2 port bore delivers a push of 3927N and pull of 3681N at 0.5MPa, 5497N push at 0.7MPa, 7068N at 0.9MPa, and a max force of 801kgf at 1.0MPa. Speed is 30-800mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X1600STC replacement — usually within 7-8 hours.