This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X20, 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 SI160X20
The AirTAC SI160 Standard Cylinder SI160X20 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 SAI160X20, 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 → SAI160X20
- 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 SI160X20
The AirTAC SI160X20 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. AirTAC replaced it with the SAI160X20 direct replacement, retaining the exact ISO 15552 mounting interface, G3/4 port, and output force.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this non-magnet SKU cannot take a sensor; the legacy SI used CS1-B/DS1-B switches.
Airtac SI160 Standard Cylinder SI160X20 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X20 |
| 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 SAI160X20 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 SAI160X20 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 SI160X20
| 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 SI160X20 Is Used
Heavy Stamp Pressing
Applies 10053 N of push force at 0.5 MPa for short 20 mm stamping, forming, and riveting operations in heavy fabrication lines.
Short Stroke Ejection
Ejects dense manufactured parts from molding or forging equipment quickly over 20 mm, utilizing the 30-500 mm/s speed range.
Replacing the Airtac SI160 Standard Cylinder SI160X20 with the SAI160X20
To replace the discontinued SI160X20, order the SAI160X20. Verify your ISO 15552 mounting interface, G3/4 port, and M36x2 rod thread. Because this SKU lacks the -S magnet, it cannot accept position sensors. If sizing up or down, neighbouring bores are 125 mm and 200 mm. At 0.5 MPa, this 160 mm bore yields 10053 N push and 9425 N pull. For load holding on air loss, note the air cushion only decelerates; it does not lock. Use an external pilot check valve, or specify the SAIL or BSAI lock variants. The 20 mm stroke is very short, so side-load and rod-bending risks are minimal, but ensure rigid guidance for heavy fixtures.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X20
- ✓ 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 SI160X20 FAQ
Yes, the SI160X20 is discontinued. The direct replacement is the SAI160X20. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 160 mm bore, 20 mm stroke, output force, G3/4 port, and mounting accessories.
The G3/4 port feeds a 40 mm rod. 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, 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 SAI160X20
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X20 replacement — usually within 7-8 hours.