This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX270S, 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.
Airtac SI160 Standard Cylinder SI160AX270S
The AirTAC SI160 Standard Cylinder SI160AX270S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 270mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX270S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke270 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX270S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SI160 Standard Cylinder SI160AX270S
The AirTAC SI160AX270S is a discontinued double-acting ISO 15552 profile cylinder with a 160mm bore and 270mm stroke. Delivering 10053N push force at 0.5MPa, it features a SUS420J2 stainless piston rod, a G3/4 air port, and a built-in magnet for legacy CS1-B/DS1-B sensors. AirTAC replaced this EOL unit with the SAI160AX270S.
The SAI160AX270S is a direct replacement retaining the exact ISO 15552 mounting interface, bore, stroke, output force, and port size. It upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure.
Airtac SI160 Standard Cylinder SI160AX270S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX270S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX270S |
| Bore size | Ø160 mm |
| Stroke | 270 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 SAI160AX270S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
The SAI160AX270S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI160 Standard Cylinder SI160AX270S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×270 | 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).
Where the Airtac SI160 Standard Cylinder SI160AX270S Is Used
Heavy Press Clamping
Generates 14074N at 0.7MPa to secure large steel plates during machining or welding operations.
Injection Molding Eject
Provides the robust 10053N push force required to eject dense molded parts from heavy industrial tooling.
Replacing the Airtac SI160 Standard Cylinder SI160AX270S with the SAI160AX270S
To replace the SI160AX270S, order the SAI160AX270S ensuring the ISO 15552 mounting interface, 160mm bore, 270mm stroke, G3/4 port, and SUS420J2 rod option match your fixture. The built-in magnet (-S) lets you use legacy CS1-B/DS1-B switches, though the SAI family uses current AirTAC sensors. If you need higher force, the 200mm bore offers 15708N [email protected]; if less is required, the 125mm bore provides 6136N. Note that a plain cylinder drifts without live air—the cushion only decelerates—so for load holding consider an external pilot check valve or the SAIL/BSAI lock variants. At 270mm stroke, guide rods are recommended to prevent side-load bending on the 40mm rod.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX270S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI160 Standard Cylinder SI160AX270S FAQ
Yes, the SI160AX270S is discontinued. The direct replacement is the SAI160AX270S, which shares the identical ISO 15552 mounting interface, bore, stroke, force, and G3/4 port.
At 0.5MPa it pushes 10053N and pulls 9425N. At 0.7MPa push is 14074N, and at 0.9MPa it is 18095N. The theoretical max is 2050kgf at 1.0MPa, with an operating speed of 30-500mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX270S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX270S replacement — usually within 7-8 hours.