This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X790S, 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 SI160X790S
The AirTAC SI160 Standard Cylinder SI160X790S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 790mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X790S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke790 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X790S
- 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 SI160X790S
The AirTAC SI160X790S is a discontinued double-acting ISO 15552 profile cylinder, delivering a push force of 10053 N at 0.5 MPa. It features a 160 mm bore, 790 mm stroke, G3/4 port, and a 40 mm carbon steel piston rod with an M36x2 thread. The direct replacement is the SAI160X790S, matching the interface, bore, stroke, force, and port.
The SAI upgrade introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also adds SAIL and BSAI lock variants the SI lacked. This -S SKU includes a magnet for CS1-B/DS1-B switches; the SAI uses current AirTAC switches.
Airtac SI160 Standard Cylinder SI160X790S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X790S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X790S |
| Bore size | Ø160 mm |
| Stroke | 790 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 SAI160X790S 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 SAI160X790S 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 SI160X790S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×790 | 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 SI160X790S Is Used
Heavy Machinery Forming
Drives large press beds or forming dies requiring massive thrust, using the 10053 N push force at 0.5 MPa to shape heavy steel components.
Large Fixture Actuation
Shifts substantial machining fixtures along the 790 mm travel path, relying on external guides to prevent rod bending during transit.
Replacing the Airtac SI160 Standard Cylinder SI160X790S with the SAI160X790S
To replace the SI160X790S, order the SAI160X790S. Confirm the ISO 15552 mounting interface, 160 mm bore, 790 mm stroke, G3/4 port (PT/G/NPT thread options), and mounting accessory. The -S magnet equates to legacy CS1-B/DS1-B sensors, whereas the SAI takes current AirTAC switches. For sizing both ways: a 125 mm bore yields 6136 N push at 0.5 MPa, while a 200 mm bore yields 15708 N. At 0.7 MPa this 160 mm bore reaches 14074 N. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Because the 790 mm stroke exceeds 300 mm, use external guides to prevent rod bending and side-load damage. Rod material options include carbon steel, SUS420J2 (A), and SUS304 (B); Viton H seals raise the temperature range to 0-150 C.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X790S
- ✓ 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 SI160X790S FAQ
Yes, the SI160X790S is discontinued. The direct replacement is the SAI160X790S. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 160 mm bore, 790 mm stroke, output force, G3/4 port, and mounting accessories to fit existing fixtures directly.
At 0.5 MPa it provides 10053 N push and 9425 N pull force. 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 pressure is 0.15-1.0 MPa, speed is 30-500 mm/s, and it uses a G3/4 port with a 50 mm adjustable cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X790S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X790S replacement — usually within 7-8 hours.