This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X600STC, 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 SI160X600STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 600mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X600STC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI160X600STC is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 600 mm stroke. It delivers 10053 N push force at 0.5 MPa via a G3/4 port. The direct replacement is the SAI160X600STC, matching the exact bore, stroke, force, port, and TC trunnion mounting interface for seamless fixture integration.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. For high-heat environments beyond -20 to +70 C, a Viton H seal option extends operation to 150 C.
| Model | Airtac SI160 Standard Cylinder SI160X600STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X600STC |
| Bore size | Ø160 mm |
| Stroke | 600 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 SAI160X600STC 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 SAI160X600STC 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. |
| ×600 | 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 presses and forming dies requiring up to 14074 N of thrust at 0.7 MPa, utilizing the 600 mm stroke for deep draw operations.
Actuates heavy-duty diverter arms on packaging lines, using the TC trunnion mount to handle the 600 mm stroke length and 9425 N pull force safely.
To replace the SI160X600STC, order the SAI160X600STC. Verify the ISO 15552 TC trunnion mounting, 160 mm bore, 600 mm stroke, G3/4 port, and the -S magnet for CS1-B/DS1-B legacy sensors (the SAI uses current AirTAC switches). Sizing both ways: the neighbouring 200 mm bore yields 15708 N push at 0.5 MPa, while dropping to 125 mm provides 6136 N. Because this is a 600 mm stroke, add external guides to prevent rod-bending and side-load damage. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
Yes, the SI160X600STC is discontinued. The direct replacement is the SAI160X600STC. It is dimensionally interchangeable per ISO 15552, maintaining the same 160 mm bore, 600 mm stroke, G3/4 port, and TC mounting interface.
At 0.5 MPa it provides 10053 N push and 9425 N pull. At 0.7 MPa push is 14074 N, and at 0.9 MPa it is 18095 N. The theoretical max force is 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s, and it features a 50 mm adjustable air cushion at both ends.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X600STC replacement — usually within 7-8 hours.