This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X185S, 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 SI160X185S
The AirTAC SI160 Standard Cylinder SI160X185S 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 SAI160X185S, 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 → SAI160X185S
- 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 SI160X185S
The AirTAC SI160X185S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore and 185 mm stroke. Delivering 10053 N push force at 0.5 MPa, it utilized a G3/4 air port and a 40 mm carbon steel piston rod. The direct replacement is the SAI160X185S, matching the exact ISO 15552 mounting interface, bore, stroke, output force, and port size for seamless fixture integration.
The SAI upgrade introduces an advanced piston seal with two Y-shaped one-way elements, ensuring low start-up pressure and extended service life. The original SI included a piston magnet for CS1-B/DS1-B sensors, while the SAI family also adds lock and clamp variants (SAIL, BSAI) absent in the legacy line.
Airtac SI160 Standard Cylinder SI160X185S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X185S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X185S |
| 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 SAI160X185S 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 SAI160X185S 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 SI160X185S
| 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 SI160X185S Is Used
Heavy Press Clamping
Generates 14074 N of push force at 0.7 MPa to secure large steel plates during machining and heavy-duty press operations.
Injection Mold Ejection
Delivers the high force required to eject dense molded components from industrial injection machinery safely and smoothly.
Replacing the Airtac SI160 Standard Cylinder SI160X185S with the SAI160X185S
To replace the SI160X185S, order the SAI160X185S and verify the ISO 15552 mounting interface, G3/4 port thread (PT/G/NPT), and your specific mounting accessory (LB, FA, CA, TC). The -S suffix indicates a piston magnet for position sensing; the original used CS1-B/DS1-B switches, while the SAI uses current AirTAC sensors. If sizing down, the 125 mm bore offers 6136 N push at 0.5 MPa; if sizing up, the 200 mm bore provides 15708 N. Note that a standard cylinder drifts on air loss—the cushion only decelerates near stroke end. For load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve. At 185 mm stroke, side-load is minimal, but always guide the rod to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X185S
- ✓ 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 SI160X185S FAQ
Yes, the SI160X185S is discontinued. The direct replacement is the SAI160X185S. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 185 mm stroke, 10053 N force, G3/4 port, and mounting interface.
The 160 mm bore cylinder delivers 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, and a theoretical maximum of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s, with a 50 mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X185S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X185S replacement — usually within 7-8 hours.