This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X265S, 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 SI160X265S
The AirTAC SI160 Standard Cylinder SI160X265S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 265mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X265S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke265 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X265S
- 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 SI160X265S
The AirTAC SI160X265S is a discontinued double-acting ISO 15552 profile cylinder. Delivering 10053 N push force at 0.5 MPa through a 160 mm bore and 265 mm stroke, it features a 40 mm rod, M36x2 thread, G3/4 port, and 50 mm cushions. The direct replacement is the SAI160X265S, matching the interface, force, and mounting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life, while adding SAIL and BSAI lock variants the SI lacked. The -S suffix indicates a piston magnet for CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160X265S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X265S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X265S |
| Bore size | Ø160 mm |
| Stroke | 265 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 SAI160X265S 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 SAI160X265S 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 SI160X265S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×265 | 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 SI160X265S Is Used
Heavy Press Clamping
Generates 14074 N at 0.7 MPa to secure large metal castings or heavy structural beams during machining and press operations.
Large Mold Ejection
Provides the robust 10053 N push force required to eject dense injection molds or heavy industrial components from fixtures.
Replacing the Airtac SI160 Standard Cylinder SI160X265S with the SAI160X265S
To replace the SI160X265S, order the SAI160X265S and verify your ISO 15552 mounting interface, G3/4 port, and 265 mm stroke. The SAI matches the bore, force, and accessories exactly. If sizing both ways, neighboring bores offer different force classes: the 125 mm yields 6136 N push at 0.5 MPa, while the 200 mm provides 15708 N. Because this is a 265 mm stroke, ensure your guide mechanism handles side loads to prevent rod bending. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding. The -S magnet supports legacy CS1-B/DS1-B switches; the SAI uses current AirTAC sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X265S
- ✓ 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 SI160X265S FAQ
Yes, the SI160X265S is discontinued. The direct replacement is the SAI160X265S. It is dimensionally interchangeable per ISO 15552, keeping the same 160 mm bore, 265 mm stroke, G3/4 port, and mounting interface.
The 160 mm bore provides 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. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X265S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X265S replacement — usually within 7-8 hours.