This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX450S, 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 SI160AX450S
The AirTAC SI160 Standard Cylinder SI160AX450S 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 SAI160AX450S, 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 → SAI160AX450S
- 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 SI160AX450S
The AirTAC SI160AX450S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 450 mm stroke. It delivers 10053 N push force at 0.5 MPa and features a G3/4 port. The direct replacement is the SAI160AX450S, maintaining the exact same interface, force, and mounting.
This SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The -A suffix denotes a SUS420J2 stainless rod, while the -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160AX450S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX450S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX450S |
| 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 SAI160AX450S 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 SAI160AX450S 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 SI160AX450S
| 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 SI160AX450S Is Used
Heavy Press Clamping
Generates 14074 N of thrust at 0.7 MPa to secure large steel plates during machining or welding operations.
Pallet Lift Stations
Moves loaded pallets vertically; the 450 mm stroke handles elevation changes while lifting approximately 512 kg safely.
Automated Assembly Rams
Drives heavy-duty tooling heads with a 50 mm adjustable air cushion to decelerate massive loads at stroke end.
Replacing the Airtac SI160 Standard Cylinder SI160AX450S with the SAI160AX450S
To replace the SI160AX450S, order the SAI160AX450S. Verify the ISO 15552 mounting interface, 450 mm stroke, G3/4 port, and your specific mounting accessory. The -S magnet enables current AirTAC switches, replacing legacy CS1-B/DS1-B sensors. If you need higher force, the 200 mm bore offers more thrust; if less, the 125 mm bore provides 6136 N push at 0.5 MPa. For load holding on air loss, note that a plain cylinder drifts; the cushion only decelerates. Use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Because the 450 mm stroke is long, use external guides to prevent rod bending and side loads. The -A rod is SUS420J2 stainless steel.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX450S
- ✓ 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 SI160AX450S FAQ
Yes, the SI160AX450S is discontinued. The direct replacement is the SAI160AX450S. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 450 mm stroke, G3/4 port, and mounting hardware.
It features a G3/4 port. The 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX450S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX450S replacement — usually within 7-8 hours.