This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X20S, 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 SI160X20S
The AirTAC SI160 Standard Cylinder SI160X20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 20mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke20 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X20S
- 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 SI160X20S
The AirTAC SI160X20S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 20 mm stroke, delivering 10053 N push force at 0.5 MPa through a G3/4 port. AirTAC replaced this end-of-life unit with the SAI160X20S, a direct replacement retaining the exact mounting interface, bore, stroke, output force, and port size.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B sensors, while Viton H seal options allow for high-temperature duties.
Airtac SI160 Standard Cylinder SI160X20S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X20S |
| Bore size | Ø160 mm |
| Stroke | 20 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 SAI160X20S 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 SAI160X20S 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 SI160X20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×20 | 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 SI160X20S Is Used
Heavy-Duty Pressing
Applies 10053 N of thrust at 0.5 MPa for seating large bearings or compressing dense assemblies in automotive tooling.
High-Force Clamping
Secures heavy steel fabrications during welding or machining, utilizing the 9425 N pull force to hold rigid workpieces.
Short-Stroke Ejection
Provides a fast 20 mm ejection stroke to push forged parts out of molds, operating safely within 30-500 mm/s speed limits.
Replacing the Airtac SI160 Standard Cylinder SI160X20S with the SAI160X20S
To replace the discontinued SI160X20S, order the SAI160X20S and verify your ISO 15552 mounting interface, G3/4 port thread (PT/G/NPT), and M36x2 rod-end connection. The -S magnet equates to legacy CS1-B/DS1-B switches, though the SAI replacement family utilizes current AirTAC sensors. If downsizing, a 125 mm bore yields 6136 N push at 0.5 MPa; if upsizing, a 200 mm bore provides 15708 N. Note that a plain cylinder drifts on air loss since the 50 mm adjustable cushion only decelerates at stroke end. For load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants. Because this 20 mm stroke is very short, side-load and rod-bending risks are minimal compared to longer strokes.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X20S
- ✓ 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 SI160X20S FAQ
Yes, the AirTAC SI160X20S is discontinued. The direct replacement is the SAI160X20S. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 20 mm stroke, 10053 N force, and G3/4 port for existing fixtures.
At 0.5 MPa it provides 10053 N push and 9425 N pull force. At 0.7 MPa push is 14074 N, and at 0.9 MPa it is 18095 N. The theoretical max force is 2050 kgf at 1.0 MPa. Operating speed for this 160 mm bore is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X20S replacement — usually within 7-8 hours.