This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX200, 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 SI160 Standard Cylinder SI160AX200 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 200mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX200, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI160AX200 is a discontinued double-acting ISO 15552 profile cylinder with a 160mm bore and 200mm stroke. Built with an extruded aluminum barrel and a SUS420J2 stainless piston rod, it delivers 10053 N push force at 0.5 MPa through a G3/4 port. AirTAC replaced this EOL unit with the SAI160AX200, a direct sharing the exact ISO 15552 mounting interface, M36x2 thread, and 50mm cushions.
The SAI160AX200 upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note this SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors. For load holding on air loss, the cushion only decelerates; you need an external rod lock or the SAIL/BSAI lock variants.
| Model | Airtac SI160 Standard Cylinder SI160AX200 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX200 |
| Bore size | Ø160 mm |
| Stroke | 200 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 SAI160AX200 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 SAI160AX200 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. |
| ×200 | 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 up to 18095 N at 0.9 MPa for stamping and forming rigid materials in automated fabrication lines.
Provides the 9425 N pull force at 0.5 MPa required to secure heavy structural assemblies during machining.
Drives robust lifting and positioning mechanisms for heavy-duty pallet transfer systems in logistics hubs.
To replace the SI160AX200, order the SAI160AX200. Verify your ISO 15552 mounting fixtures, the G3/4 air port, and the M36x2 rod thread. Because this specific SKU has no -S magnet, it cannot support position sensing; if you need switches, select an SAI160X200S and use current AirTAC sensors. Sizing both ways: the 160mm bore yields 10053 N push at 0.5 MPa (2050 kgf max at 1.0 MPa); if force is excessive, step down to a 125mm bore. A plain cylinder drifts on air loss—the cushion only decelerates—so for suspended loads install a pilot check valve or explore the SAIL or BSAI lock variants. Since the 200mm stroke is under 300mm, rod bending is minimal, but always guide external loads to prevent side-loading.
Replacement checklist
Yes, the SI160AX200 is discontinued. The direct replacement is the SAI160AX200. It is dimensionally interchangeable per ISO 15552, retaining the same 160mm bore, 200mm stroke, G3/4 port, and mounting interface, but adds an upgraded piston seal.
The G3/4 ported 160mm bore delivers 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, and a theoretical max of 2050 kgf at 1.0 MPa. It operates at 30-500 mm/s with a 50mm adjustable cushion at each end.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX200 replacement — usually within 7-8 hours.