This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X180, 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 SI160X180
The AirTAC SI160 Standard Cylinder SI160X180 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 SAI160X180, 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 → SAI160X180
- 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 SI160X180
The AirTAC SI160X180 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 180 mm stroke, delivering 10053 N push force at 0.5 MPa through its G3/4 port. AirTAC replaced this legacy unit with the SAI160X180, a direct upgrade retaining the exact ISO 15552 mounting interface, M36x2 rod thread, and 50 mm cushions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. This non-magnet SKU cannot accept a sensor, though legacy SI units with -S used CS1-B/DS1-B switches. A Viton H seal option raises the operating ceiling to 150 C.
Airtac SI160 Standard Cylinder SI160X180 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X180 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X180 |
| 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 SAI160X180 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 SAI160X180 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 SI160X180
| 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 SI160X180 Is Used
Heavy Press Operations
Drives large forming and stamping presses requiring up to 14074 N thrust at 0.7 MPa, utilizing the 50 mm adjustable cushions to absorb high kinetic energy.
Large Clamp Fixtures
Secures heavy fabricated components during machining via the ISO 15552 interface, maintaining exact positioning under dynamic loads.
Replacing the Airtac SI160 Standard Cylinder SI160X180 with the SAI160X180
To replace the SI160X180, order the SAI160X180 keeping the identical 180 mm stroke, 160 mm bore, G3/4 port, and ISO 15552 mounting fixture. Since this specific SKU lacks the -S magnet, it cannot support position sensing; if detection is needed, select an SAI160X180S and use current AirTAC switches. When sizing both ways, verify if neighbouring bores fit your envelope: the 125 mm bore yields 6136 N push at 0.5 MPa, while the 200 mm bore yields 15708 N. Note that a standard cylinder drifts on air loss because the cushion only decelerates near stroke end; for secure load holding, specify the SAIL or BSAI lock variant, or add an external pilot check valve. Even at 180 mm stroke, verify guide alignment to prevent rod bending under heavy 160 mm bore thrust.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X180
- ✓ 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 SI160X180 FAQ
Yes, the SI160X180 is discontinued. The direct replacement is the AirTAC SAI160X180. It features the same ISO 15552 mounting interface, 160 mm bore, 180 mm stroke, output force, G3/4 port, and accessories, fitting directly into existing fixtures.
This double-acting cylinder uses a G3/4 air port. It generates 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. The operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X180
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X180 replacement — usually within 7-8 hours.