This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX100, 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 SI160 Standard Cylinder SI160AX100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 100mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX100, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI160AX100 is a discontinued double-acting ISO 15552 profile cylinder featuring a 160mm bore and 100mm stroke. It delivers a robust 10053 N push force at 0.5 MPa through a G3/4 port. AirTAC replaced this legacy unit with the SAI160AX100, a direct sharing the exact ISO 15552 mounting interface, stroke, force, and accessories.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and longevity. This specific SKU lacks a magnet (-S), so it cannot accept CS1-B/DS1-B sensors. The SUS420J2 stainless rod resists corrosion.
| Model | Airtac SI160 Standard Cylinder SI160AX100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX100 |
| Bore size | Ø160 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI160AX100 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 | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
The SAI160AX100 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). |
|---|---|
| 160 | Bore size in mm. |
| ×100 | 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).
Generates 10053 N of clamping thrust at 0.5 MPa to secure large metal castings during machining operations.
Provides the robust 18095 N output at 0.9 MPa required to eject dense composite molds from heavy-duty presses.
To replace the SI160AX100, order the SAI160AX100 and verify your ISO 15552 interface, G3/4 port, M36x2 rod thread, and mounting accessory. This non-magnetic SKU cannot support position sensing. If you need more force than the 10053 N at 0.5 MPa (or 14074 N at 0.7 MPa), step up to the 200mm bore. If less is required, the 125mm bore provides 6136 N. Note that a plain cylinder drifts on air loss; the 50mm cushions only decelerate. For load holding, use an external pilot check valve or explore the SAIL or BSAI lock variants.
Replacement checklist
Yes, the SI160AX100 is discontinued. The direct replacement is the SAI160AX100. It shares the exact ISO 15552 mounting interface, 160mm bore, 100mm stroke, force, and G3/4 port, fitting existing fixtures perfectly.
The cylinder operates at 30-500 mm/s. It delivers 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, 18095 N at 0.9 MPa, and a maximum theoretical force of 2050 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX100 replacement — usually within 7-8 hours.