This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X180H, 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 SI160X180H
The AirTAC SI160 Standard Cylinder SI160X180H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 180mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X180H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke180 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X180H
- 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 SI160X180H
The AirTAC SI160X180H is a discontinued double-acting ISO 15552 profile cylinder engineered for heavy-duty tasks, delivering a push force of 10053 N at 0.5 MPa. This high-temperature variant utilizes a Viton H seal, extending the operating range from -20°C up to 150°C. Because the SI line is end-of-life, AirTAC replaced it with the SAI160X180H—a direct upgrade retaining the exact 160 mm bore, 180 mm stroke, G3/4 port, and mounting interface.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note that this specific SKU lacks a magnet (-S) and therefore cannot accept position sensors.
Airtac SI160 Standard Cylinder SI160X180H Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X180H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X180H |
| Bore size | Ø160 mm |
| Stroke | 180 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 SAI160X180H 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 SAI160X180H 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 SI160X180H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×180 | 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 SI160X180H Is Used
Hot Stamp Presses
Drives heavy platens in high-temperature stamping operations where the Viton H seal survives ambient heat that degrades standard NBR rubber.
Large Mold Clamping
Generates 10053 N of clamping force at 0.5 MPa to secure substantial injection molds or heavy fabrication tooling securely during production cycles.
Pallet Dispensers
Indexes heavy loaded pallets in automated distribution lines, utilizing the 180 mm stroke to push substantial weights smoothly onto accumulation conveyors.
Replacing the Airtac SI160 Standard Cylinder SI160X180H with the SAI160X180H
To replace the discontinued SI160X180H, order the SAI160X180H. Verify your existing fixture's ISO 15552 mounting interface (such as LB foot or TC trunnion), the 180 mm stroke, and the G3/4 air port. This high-temp Viton H version suits environments up to 150°C. Since this model lacks a magnet, it cannot support CS1-B/DS1-B sensors; if sensing is required, select an SAI equivalent with the S suffix. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding, consider an external pilot check valve or the SAIL/BSAI lock variants. If sizing alternatives, the 125 mm bore yields 6136 N push at 0.5 MPa, while the 200 mm bore provides 15708 N.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X180H
- ✓ 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 SI160X180H FAQ
Yes, the SI160X180H is discontinued. The direct replacement is the SAI160X180H. It shares the identical ISO 15552 mounting interface, 160 mm bore, 180 mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly while adding an upgraded piston seal.
This double-acting cylinder features a G3/4 air port and a 40 mm rod. It delivers a push force of 10053 N and a pull force of 9425 N at 0.5 MPa. At 0.7 MPa it pushes 14074 N, and 18095 N at 0.9 MPa. The theoretical maximum force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X180H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X180H replacement — usually within 7-8 hours.