This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X450N, 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 SI160X450N
The AirTAC SI160 Standard Cylinder SI160X450N 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 SAI160X450N, 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 → SAI160X450N
- 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 SI160X450N
The AirTAC SI160X450N 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 via a G3/4 port. The direct replacement is the SAI160X450N, matching the interface, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. This non-magnet SKU cannot take a sensor, unlike the CS1-B/DS1-B legacy switches.
Airtac SI160 Standard Cylinder SI160X450N Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X450N |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X450N |
| 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 SAI160X450N 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 SAI160X450N 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 SI160X450N
| 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 SI160X450N Is Used
Heavy Press Stamping
Drives large metal forming presses where the 14074 N push at 0.7 MPa ensures rigid actuation.
Pallet Lift Gates
Raises heavy loading dock scissor gates, safely moving loads near the 512 kg vertical lift limit.
Industrial Mold Clamping
Secures large injection molds, utilizing the 50 mm adjustable cushions to stop 450 mm strokes smoothly.
Replacing the Airtac SI160 Standard Cylinder SI160X450N with the SAI160X450N
To replace this SI with the SAI160X450N, verify the ISO 15552 mounting interface, 450 mm stroke, G3/4 port, and M36x2 thread. The NBR seal suits -20 to +70 C; choose Viton H for up to 150 C. Lacking a -S magnet, this cylinder cannot accept position sensors. For sizing, the 125 mm bore offers 6136 N [email protected], while the 200 mm bore provides 15708 N. At 450 mm stroke, use external guides to prevent rod bending and side-load wear. The air cushion only decelerates; it does not hold load. For load holding on air loss, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X450N
- ✓ 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 SI160X450N FAQ
Yes, the SI160X450N is discontinued. The direct replacement is the SAI160X450N. It is dimensionally interchangeable per ISO 15552, keeping the same 160 mm bore, 450 mm stroke, 10053 N force, G3/4 port, and mounting fixtures.
It uses a G3/4 port. Forces are 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, and 18095 N push at 0.9 MPa. The theoretical max is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X450N
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X450N replacement — usually within 7-8 hours.