This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX180, 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 SI160AX180
The AirTAC SI160 Standard Cylinder SI160AX180 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 SAI160AX180, 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 → SAI160AX180
- 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 SI160AX180
The AirTAC SI160AX180 is a discontinued double-acting ISO 15552 profile cylinder featuring a 160mm bore and 180mm stroke. It delivers a robust 10053 N push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAI160AX180, a direct upgrade retaining the exact same interface, port, and force. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Furthermore, this -A variant uses a SUS420J2 stainless steel rod for corrosion resistance, and because it lacks a -S magnet, it cannot accept position sensors.
The SAI family also introduces lock and valve variants the original SI lacked, such as the SAIL and BSAI clamp-lock. Note that a standard cylinder drifts without live air; the 50 mm adjustable cushions only decelerate near stroke end.
Airtac SI160 Standard Cylinder SI160AX180 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX180 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX180 |
| 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 SAI160AX180 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 SAI160AX180 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 SI160AX180
| 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 SI160AX180 Is Used
Heavy Stamping Press
Drives large heavy-duty stamping and forming dies requiring high thrust and a robust 40mm piston rod.
Pallet Transfer
Indexes loaded pallets on high-capacity conveyor lines, utilizing the 10053 N push force at 0.5 MPa.
Automated Welding
Actuates large robotic welding fixtures where the SUS420J2 stainless rod resists weld spatter and plant moisture.
Replacing the Airtac SI160 Standard Cylinder SI160AX180 with the SAI160AX180
To replace the discontinued SI160AX180, order the SAI160AX180. Verify the ISO 15552 mounting interface, the 180mm stroke, and the G3/4 port. Retain your original mounting accessories and confirm the -A SUS420J2 stainless rod material. Because this SKU lacks a magnet, it cannot support sensors; if position detection is needed, a current SAI model with a -S suffix and modern AirTAC switches is required. If sizing down, a 125mm bore yields 6136 N push at 0.5 MPa; if sizing up, a 200mm bore yields 15708 N. For load holding on air loss, the cushions will not prevent drift—use an external pilot check valve or the SAIL/BSAI lock variants. At 180mm stroke, side-load is minimal, but always ensure proper guide alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX180
- ✓ 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 SI160AX180 FAQ
Yes, the AirTAC SI160AX180 is discontinued. The direct replacement is the SAI160AX180. It is dimensionally interchangeable per ISO 15552, maintaining the same 160mm bore, 180mm stroke, force, G3/4 port, and mounting interface.
The SI160AX180 operates at 30-500 mm/s. At 0.5 MPa it pushes 10053 N and pulls 9425 N. 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 SAI160AX180
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX180 replacement — usually within 7-8 hours.