This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX180S, 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 SI160AX180S
The AirTAC SI160 Standard Cylinder SI160AX180S 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 SAI160AX180S, 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 → SAI160AX180S
- 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 SI160AX180S
The AirTAC SI160AX180S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160mm bore, 180mm stroke, and a SUS420J2 stainless piston rod. It delivers 10053N push force at 0.5MPa through its G3/4 port. The direct replacement is the SAI160AX180S, which matches the original bore, stroke, force, and mounting interface.
The SAI upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and extended life. This -S variant includes a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI family also adds SAIL and BSAI lock variants absent from the SI line.
Airtac SI160 Standard Cylinder SI160AX180S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX180S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX180S |
| 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 SAI160AX180S 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 SAI160AX180S 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 SI160AX180S
| 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 SI160AX180S Is Used
Heavy Press Forming
Drives large stamping and forming presses requiring sustained 10053N thrust at 0.5MPa with a robust 160mm bore profile barrel.
Automated Clamp Systems
Secures large fabricated components during machining, relying on the 180mm stroke and adjustable 50mm air cushions for smooth stops.
Replacing the Airtac SI160 Standard Cylinder SI160AX180S with the SAI160AX180S
To replace the SI160AX180S, order the SAI160AX180S and verify your ISO 15552 mounting interface, G3/4 port thread (PT/G/NPT), and M36x2 rod-end connection. The 180mm stroke is well within the 1500mm standard limit, but always check side-load alignment to prevent rod bending. If sizing up or down, compare neighbouring bores: a 125mm bore yields 6136N push at 0.5MPa, whereas a 200mm bore provides 15708N. Note that a standard cylinder drifts without live air—the 50mm cushion only decelerates end-of-stroke. For load holding on air loss, specify an external pilot check valve or explore the SAIL/BSAI lock variants. The SAI family also includes the SAIF self-valve option for bores up to 100mm.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX180S
- ✓ 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 SI160AX180S FAQ
Yes, the AirTAC SI160AX180S is discontinued. The direct replacement is the SAI160AX180S. It is dimensionally interchangeable per ISO 15552, retaining the same 160mm bore, 180mm stroke, output force, G3/4 port, and mounting fixtures.
The 160mm bore provides 10053N push and 9425N pull at 0.5MPa, 14074N push at 0.7MPa, 18095N push at 0.9MPa, and a theoretical max of 2050 kgf at 1.0MPa. Operating speed is 30-500 mm/s, and the rod thread is M36x2.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX180S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX180S replacement — usually within 7-8 hours.