This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X450S, 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 SI160X450S
The AirTAC SI160 Standard Cylinder SI160X450S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 450mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X450S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke450 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X450S
- 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 SI160X450S
The AirTAC SI160X450S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 450 mm stroke. It delivers 10053 N of push force at 0.5 MPa and features a G3/4 air port. AirTAC replaced this legacy unit with the SAI160X450S, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, output force, and port size.
The SAI successor introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also adds SAIL and BSAI lock variants absent from the SI line, and the original -S magnet supports legacy CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160X450S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X450S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X450S |
| Bore size | Ø160 mm |
| Stroke | 450 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 SAI160X450S 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 SAI160X450S 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 SI160X450S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×450 | 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 SI160X450S Is Used
Heavy Press Operations
Drives large stamping and forming presses requiring high thrust, utilizing the 10053 N push force at 0.5 MPa to move substantial tooling masses.
Large Mold Handling
Actuates heavy industrial molds and clamping fixtures on production lines, relying on the 50 mm adjustable air cushions to decelerate the 450 mm stroke.
Replacing the Airtac SI160 Standard Cylinder SI160X450S with the SAI160X450S
To replace the SI160X450S, order the SAI160X450S. Confirm the ISO 15552 mounting interface, the 450 mm stroke, the G3/4 port (PT/G/NPT thread), and your mounting accessory (LB, FA, TC, etc.). The -S suffix indicates a piston magnet for CS1-B/DS1-B switches; the SAI replacement uses current AirTAC sensors. For sizing, the 160 mm bore yields 10053 N push at 0.5 MPa; if less force is needed, a 125 mm bore provides 6136 N, while a 200 mm bore offers 15708 N. Because the 450 mm stroke is long, use an external guide to prevent rod bending and side loads. A plain cylinder drifts without air; for load holding, use the SAIL or BSAI lock variant, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X450S
- ✓ 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 SI160X450S FAQ
Yes, the SI160X450S is discontinued. The direct replacement is the AirTAC SAI160X450S. It shares the same ISO 15552 mounting interface, 160 mm bore, 450 mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
This double-acting cylinder operates at 0.15-1.0 MPa (proof 1.5 MPa) with a speed of 30-500 mm/s. It delivers 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, and a theoretical max of 2050 kgf at 1.0 MPa. It has a G3/4 port, M36x2 rod thread, and 50 mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X450S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X450S replacement — usually within 7-8 hours.