This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX225S, 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 SI160AX225S
The AirTAC SI160 Standard Cylinder SI160AX225S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 225mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX225S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke225 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX225S
- 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 SI160AX225S
The AirTAC SI160AX225S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 225 mm stroke. Delivering 10053 N push force at 0.5 MPa, it features a SUS420J2 stainless steel piston rod, a G3/4 air port and a built-in piston magnet for CS1-B/DS1-B legacy sensors. AirTAC replaced this end-of-life unit with the SAI160AX225S, a direct sharing the exact ISO 15552 mounting interface, bore, stroke, force and port.
The SAI upgrade introduces a two-piece Y-shaped piston seal for low start-up pressure and extended life, while retaining the 50 mm adjustable air cushions. Note that a plain cylinder drifts on air loss; for load holding, explore the SAIL or BSAI lock variants, or use an external pilot check valve.
Airtac SI160 Standard Cylinder SI160AX225S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX225S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX225S |
| Bore size | Ø160 mm |
| Stroke | 225 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 SAI160AX225S 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 SAI160AX225S 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 SI160AX225S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×225 | 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 SI160AX225S Is Used
Heavy Press Clamping
Generates 14074 N at 0.7 MPa to secure large steel fabrications during machining or welding operations.
Stamping Press Feed
Drives robust 225 mm stroke mechanisms to feed heavy gauge materials into high-tonnage stamping presses.
Pallet Lift Gates
Actuates heavy industrial pallet flow gates and lifting platforms where a 512 kg vertical lift margin is required.
Replacing the Airtac SI160 Standard Cylinder SI160AX225S with the SAI160AX225S
To replace the SI160AX225S, order the SAI160AX225S. Confirm the ISO 15552 mounting interface, the 225 mm stroke, the G3/4 port, and the -S magnet for current AirTAC switch compatibility. If downsizing, neighbouring bores offer less force, but stepping up increases the 10053 N @0.5 MPa output. The SUS420J2 rod resists corrosion, while a Viton H seal raises operating temperature to 150 C. Because stroke exceeds 300 mm, ensure guide rails to prevent rod bending under side loads. A standard cylinder does not hold load without live air; the cushion only decelerates. For secure holding, specify the SAIL air-released lock, BSAI clamp-lock, or an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX225S
- ✓ 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 SI160AX225S FAQ
Yes, the SI160AX225S is discontinued. The direct replacement is the SAI160AX225S. It shares the identical ISO 15552 mounting interface, 160 mm bore, 225 mm stroke, output force, G3/4 port and accessories, fitting existing fixtures perfectly.
It features a G3/4 air port and an M36x2 rod thread. Force output is 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, with a theoretical maximum of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX225S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX225S replacement — usually within 7-8 hours.