This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X320S, 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 SI160X320S
The AirTAC SI160 Standard Cylinder SI160X320S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 320mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X320S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke320 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X320S
- 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 SI160X320S
The AirTAC SI160X320S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 320 mm stroke. Delivering 10053 N push force at 0.5 MPa via a G3/4 port, it is directly replaced by the SAI160X320S direct equivalent.
The SAI160X320S matches the exact ISO 15552 mounting interface, M36x2 thread, and 50 mm cushions. It upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure. The original -S magnet supports legacy CS1-B/DS1-B sensors, while SAI adds SAIL and BSAI lock variants absent in the SI line.
Airtac SI160 Standard Cylinder SI160X320S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X320S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X320S |
| Bore size | Ø160 mm |
| Stroke | 320 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 SAI160X320S 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 SAI160X320S 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 SI160X320S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×320 | 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 SI160X320S Is Used
Heavy Pressing
Drives large stamping and forming presses requiring 10053 N thrust at 0.5 MPa.
Mold Handling
Shifts substantial injection molds along the 320 mm stroke using external guides.
Replacing the Airtac SI160 Standard Cylinder SI160X320S with the SAI160X320S
To replace the SI160X320S, order the SAI160X320S, verifying the ISO 15552 mounting interface, G3/4 port, and -S magnet for current AirTAC switches. Neighbouring bores are 125 mm (6136 N @0.5) and 200 mm (15708 N @0.5); this 160 mm bore yields 10053 N. For the 320 mm stroke, use external guides to prevent rod bending and side-load damage. The air cushion only decelerates; it does not hold load on air loss. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X320S
- ✓ 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 SI160X320S FAQ
Yes, the SI160X320S is discontinued. The direct replacement is the SAI160X320S, matching the ISO 15552 mounting interface, 160 mm bore, 320 mm stroke, force, G3/4 port, and accessories.
It features a G3/4 port and delivers 10053 N push / 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, 18095 N push at 0.9 MPa, and a 2050 kgf max at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X320S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X320S replacement — usually within 7-8 hours.