This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX185, 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 SI160AX185
The AirTAC Airtac SI160 Standard Cylinder SI160AX185 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 185mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX185, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke185 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX185
- 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 SI160AX185
The AirTAC SI160AX185 is a discontinued double-acting ISO 15552 profile cylinder. Delivering 10053 N push force at 0.5 MPa via a 160 mm bore and G3/4 port, it is superseded by the direct replacement SAI160AX185. This SKU uses a SUS420J2 stainless rod (option A) and lacks a magnet, meaning it cannot accept a position switch.
The SAI160AX185 replacement shares the exact ISO 15552 mounting interface, stroke, and force. It upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure.
Airtac SI160 Standard Cylinder SI160AX185 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX185 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX185 |
| Bore size | Ø160 mm |
| Stroke | 185 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 SAI160AX185 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 SAI160AX185 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 SI160AX185
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×185 | 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 SI160AX185 Is Used
Heavy-Duty Pressing
Drives large stamping and forming presses requiring up to 14074 N of thrust at 0.7 MPa, utilizing the robust 40 mm piston rod.
Industrial Clamp Systems
Secures heavy fabrication assemblies during welding or machining, relying on 9425 N of pull force at 0.5 MPa.
Material Load Lowering
Controls the descent of 500 kg bulk material hoppers, using adjustable 50 mm air cushions to decelerate at stroke end.
Replacing the Airtac SI160 Standard Cylinder SI160AX185 with the SAI160AX185
To replace this SI160AX185 with the SAI160AX185, confirm the ISO 15552 mounting interface, 185 mm stroke, G3/4 port, and SUS420J2 rod. Because this non-magnet SKU cannot take a sensor, add an external rod lock or pilot check valve if load holding is needed, as the cushion only decelerates. For self-contained locking, explore the SAIL or BSAI variants. If sizing adjacent bores, the 125 mm bore yields 6136 N push at 0.5 MPa, while the 200 mm bore provides 15708 N. With a 185 mm stroke under 300 mm, side-load risks are minimal, but always guide the load to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX185
- ✓ 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 SI160AX185 FAQ
Yes, the AirTAC SI160AX185 is discontinued. The direct replacement is the SAI160AX185. It features the same ISO 15552 mounting interface, 160 mm bore, 185 mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
This 160 mm bore 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 maximum theoretical force of 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX185
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX185 replacement — usually within 7-8 hours.