This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX180STC, 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 SI160BX180STC
The AirTAC SI160 Standard Cylinder SI160BX180STC 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 SAI160BX180STC, 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 → SAI160BX180STC
- 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 SI160BX180STC
The AirTAC SI160BX180STC is a discontinued double-acting ISO 15552 profile cylinder. It delivers 10053 N push force at 0.5 MPa through a 160 mm bore and 180 mm stroke. The direct replacement is the SAI160BX180STC, which preserves the same G3/4 port, M36x2 rod thread, and TC trunnion mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. This SUS304 stainless rod variant (-B) provides corrosion resistance, while the -S magnet supports CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160BX180STC Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX180STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX180STC |
| 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 SAI160BX180STC 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 SAI160BX180STC 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 SI160BX180STC
| 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 SI160BX180STC Is Used
Heavy Press Clamping
Generates 14074 N at 0.7 MPa to secure large steel fabrications during machining or welding operations.
Injection Mold Actuation
Drives heavy mold halves or ejector mechanisms, relying on the SUS304 rod for plant corrosion resistance.
Replacing the Airtac SI160 Standard Cylinder SI160BX180STC with the SAI160BX180STC
To replace the SI160BX180STC, order the SAI160BX180STC. It drops into existing fixtures via the identical ISO 15552 TC trunnion interface, 160 mm bore, 180 mm stroke, and G3/4 port. If you need more force, the 200 mm bore offers 15708 N [email protected]; if less, the 125 mm bore provides 6136 N. A plain cylinder drifts on air loss—the 50 mm cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAI family also adds the SAIF valve option. This 180 mm stroke is standard, but always guide side loads to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX180STC
- ✓ 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 SI160BX180STC FAQ
Yes, the SI160BX180STC is discontinued. The direct replacement is the SAI160BX180STC. It features the same ISO 15552 mounting interface, 160 mm bore, 180 mm stroke, output force, G3/4 port, and TC trunnion mounting.
The 160 mm bore uses a G3/4 port. It delivers 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 max of 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX180STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX180STC replacement — usually within 7-8 hours.