This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX270, 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 SI160AX270
The AirTAC SI160 Standard Cylinder SI160AX270 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 SAI160AX270, 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 → SAI160AX270
- 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 SI160AX270
The AirTAC SI160AX270 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 270 mm stroke. It delivers 10053 N push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI160AX270, which matches the original bore, stroke, force, port, and ISO 15552 mounting interface exactly.
This SKU lacks a magnet (-S) and cannot accept a sensor. The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure, and adds SAIL or BSAI lock variants the SI lacked. The -A suffix denotes a SUS420J2 stainless piston rod for corrosion resistance.
Airtac SI160 Standard Cylinder SI160AX270 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX270 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX270 |
| 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 SAI160AX270 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 SAI160AX270 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 SI160AX270
| 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 SI160AX270 Is Used
Heavy Press Operations
Drives large stamping and forming presses requiring up to 18095 N thrust at 0.9 MPa, utilizing the 50 mm adjustable cushion to decelerate massive loads smoothly.
Automated Assembly Lines
Actuates heavy-duty industrial fixtures and clamps where the SUS420J2 stainless rod option provides necessary corrosion resistance in humid production environments.
Replacing the Airtac SI160 Standard Cylinder SI160AX270 with the SAI160AX270
To replace the SI160AX270, order the SAI160AX270. Confirm the ISO 15552 mounting interface, the 270 mm stroke, and the G3/4 port. Because this SKU has no -S magnet, it cannot support position sensing; if switches are needed, specify a magnet on the SAI order. For sizing, the neighboring 200 mm bore offers higher thrust, while the 125 mm bore provides 6136 N push at 0.5 MPa. This 270 mm stroke is within the 1500 mm standard limit, but for strokes over 300 mm, use guide rails to prevent rod bending and side-load wear. A plain cylinder drifts on air loss; for load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve. The SAI family also offers SAIF valve-integrated options, though only for bores 32-100.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX270
- ✓ 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 SI160AX270 FAQ
Yes, the SI160AX270 is discontinued. The direct replacement is the SAI160AX270. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 270 mm stroke, output force, G3/4 port, and mounting accessories, so it drops directly into existing fixtures.
The 160 mm bore cylinder operates at 30-500 mm/s. Force ratings are: 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, 18095 N push at 0.9 MPa, and a theoretical maximum of 2050 kgf at 1.0 MPa. It features a 40 mm rod, M36x2 thread, and 50 mm cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX270
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX270 replacement — usually within 7-8 hours.