This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X820S, 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 SI160X820S
The AirTAC SI160 Standard Cylinder SI160X820S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 820mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X820S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke820 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X820S
- 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 SI160X820S
The AirTAC SI160X820S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore, 820 mm stroke, G3/4 port, and a 40 mm carbon steel rod. Delivering 10053 N of push force at 0.5 MPa, it is replaced by the SAI160X820S. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, and port size, fitting existing fixtures perfectly.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. For applications needing load holding, note that a standard cylinder drifts without air; the cushion only decelerates. Consider the SAIL or BSAI lock variants.
Airtac SI160 Standard Cylinder SI160X820S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X820S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X820S |
| Bore size | Ø160 mm |
| Stroke | 820 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 SAI160X820S 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 SAI160X820S 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 SI160X820S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×820 | 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 SI160X820S Is Used
Heavy Machinery Forming
Drives large press platens and forming dies requiring up to 18095 N of thrust at 0.7 MPa over an extended 820 mm travel distance.
Automated Assembly Press
Provides steady clamping force for large component assembly, relying on adjustable 50 mm air cushions to decelerate at stroke ends.
Replacing the Airtac SI160 Standard Cylinder SI160X820S with the SAI160X820S
To replace the SI160X820S, order the SAI160X820S. Verify your ISO 15552 mounting accessory (LB, FA, CA, TC) and port thread (PT, G, or NPT). The -S suffix indicates a piston magnet for CS1-B/DS1-B legacy sensors; the SAI uses current AirTAC switches. If sizing alternatives, a 200 mm bore offers more force, while a 125 mm bore provides 6136 N push @0.5 MPa. Because this is an 820 mm stroke, prevent rod bending by guiding the load externally to avoid side loads. A plain cylinder does not hold load on air loss—use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants for secure holding. Speed is 30-500 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X820S
- ✓ 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 SI160X820S FAQ
Yes, the AirTAC SI160X820S is discontinued. The direct replacement is the SAI160X820S. It shares the same ISO 15552 mounting interface, 160 mm bore, 820 mm stroke, output force, and G3/4 port, dropping directly into existing machinery.
It features a G3/4 air port and 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 SAI160X820S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X820S replacement — usually within 7-8 hours.