This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX120S, 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 SI160AX120S
The AirTAC SI160 Standard Cylinder SI160AX120S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 120mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX120S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke120 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX120S
- 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 SI160AX120S
The AirTAC SI160AX120S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 120 mm stroke. It delivers 10053 N push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAI160AX120S, a direct upgrade sharing the exact ISO 15552 mounting interface, G3/4 port, M36x2 rod thread, and 50 mm cushions. The SAI features an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. This -A variant uses a SUS420J2 stainless piston rod for corrosion resistance, while the -S magnet supports CS1-B/DS1-B sensors.
Note that a plain cylinder drifts on air loss; the cushions only decelerate near stroke end. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants the SI lacked. The SAI family also adds the SAIF integrated valve option.
Airtac SI160 Standard Cylinder SI160AX120S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX120S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX120S |
| Bore size | Ø160 mm |
| Stroke | 120 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 SAI160AX120S 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 SAI160AX120S 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 SI160AX120S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×120 | 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 SI160AX120S Is Used
Heavy Press Systems
Drives large stamping and forming presses requiring 10053 N push force at 0.5 MPa, utilizing the SUS420J2 stainless rod in humid environments.
Automated Clamp Fixtures
Secures large fabricated components during machining, benefiting from the double-acting 120 mm stroke and G3/4 air port for high flow.
Replacing the Airtac SI160 Standard Cylinder SI160AX120S with the SAI160AX120S
To replace the discontinued SI160AX120S, order the SAI160AX120S. Confirm the ISO 15552 mounting interface, 160 mm bore, 120 mm stroke, G3/4 port, and SUS420J2 stainless rod (-A). Retain the -S magnet for position sensing, noting the SAI uses current AirTAC switches while legacy SI used CS1-B/DS1-B. This bore runs at 30-500 mm/s. If downsizing, the 125 mm bore offers 6136 N push at 0.5 MPa; if upsizing, the 200 mm bore provides 15708 N. For load holding on air loss, do not rely on the 50 mm cushions—they only decelerate. Specify an external rod lock, a pilot check valve, or upgrade to the SAIL or BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX120S
- ✓ 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 SI160AX120S FAQ
Yes, the AirTAC SI160AX120S is discontinued. The direct replacement is the SAI160AX120S. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 120 mm stroke, 10053 N force, G3/4 port, and mounting interface.
This 160 mm bore cylinder has a G3/4 air port and M36x2 rod thread. At 0.5 MPa it provides 10053 N push and 9425 N pull force. At 0.7 MPa push is 14074 N, and 18095 N at 0.9 MPa. The theoretical maximum force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX120S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX120S replacement — usually within 7-8 hours.