This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X577SCB, 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 SI160X577SCB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 577mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X577SCB, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI160X577SCB is a discontinued double-acting ISO 15552 profile cylinder with a 160mm bore and 577mm stroke. Delivering 10053N push force at 0.5MPa via a G3/4 port, it is replaced direct by the SAI160X577SCB, sharing identical mounting and dimensions.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure. For high heat, Viton H seals raise limits to 150C; for load holding, explore SAIL or BSAI lock variants.
| Model | Airtac SI160 Standard Cylinder SI160X577SCB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X577SCB |
| Bore size | Ø160 mm |
| Stroke | 577 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 SAI160X577SCB 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 SAI160X577SCB 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. |
| ×577 | 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 platens and heavy dies using 10053N of thrust at 0.5MPa, relying on the 50mm adjustable cushion to absorb impact.
Actuates heavy-duty diverter gates on high-capacity lines, utilizing the CB clevis mount to handle pivoting loads.
To replace the SI160X577SCB, order SAI160X577SCB to retain the ISO 15552 CB clevis mount, 577mm stroke, M36x2 thread, and -S magnet for CS1-B/DS1-B sensors. At 0.5MPa it yields 10053N push and 9425N pull; if undersizing, a 125mm bore gives 6136N. Because 577mm exceeds standard strokes, expect a nonstandard stroke and use external guides to prevent rod bending. Note: cushions only decelerate; use an external rod lock or pilot check valve for load holding.
Replacement checklist
Yes, the SI160X577SCB is discontinued. The direct replacement is the SAI160X577SCB. It shares the identical ISO 15552 mounting interface, 160mm bore, 577mm stroke, output force, G3/4 port, and CB mounting, fitting existing fixtures perfectly.
The 160mm bore delivers 10053N push and 9425N pull at 0.5MPa, 14074N push at 0.7MPa, and 18095N push at 0.9MPa. The theoretical max force is 2050kgf at 1.0MPa. Operating speed is 30-500mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X577SCB replacement — usually within 7-8 hours.