This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X720, 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 SI160X720
The AirTAC Airtac SI160 Standard Cylinder SI160X720 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 720mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X720, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke720 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X720
- 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 SI160X720
The AirTAC SI160X720 is a discontinued double-acting ISO 15552 profile cylinder, delivering a robust 10053 N push force at 0.5 MPa through a 160 mm bore and 720 mm stroke. AirTAC replaced this legacy unit with the SAI160X720, a direct replacement retaining the exact ISO 15552 mounting interface, G3/4 port, and M36x2 rod thread.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet (-S), so it cannot accept CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160X720 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X720 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X720 |
| Bore size | Ø160 mm |
| Stroke | 720 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 SAI160X720 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 SAI160X720 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 SI160X720
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×720 | 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 SI160X720 Is Used
Heavy Stamping Press
Drives large heavy-duty stamping and forming dies requiring high thrust over an extended 720 mm travel distance.
Automotive Assembly Lift
Raises and lowers substantial chassis or powertrain components, utilizing the 10053 N push force to handle heavy loads.
Pallet Discharge Gate
Actuates large-scale conveyor diversion gates or heavy pallet stops in high-throughput logistics distribution centers.
Replacing the Airtac SI160 Standard Cylinder SI160X720 with the SAI160X720
To replace the SI160X720, order the SAI160X720 ensuring your ISO 15552 mounting fixtures, G3/4 port, and M36x2 rod end match. Because this is a non-magnetic SKU, it cannot support position sensing; if switches are needed, select an SAI160X720S. Operating speed is 30-500 mm/s. For sizing alternatives, dropping to a 125 mm bore reduces the footprint but cuts the 0.5 MPa push force to 6136 N, whereas a 200 mm bore increases it to 15708 N. A standard cylinder drifts without live air, so for load holding on pressure loss, specify the SAIL or BSAI lock variant, or use an external pilot check valve. Finally, at 720 mm stroke, prevent rod bending by guiding the load externally to avoid severe side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X720
- ✓ 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 SI160X720 FAQ
Yes, the SI160X720 is discontinued. The direct replacement is the SAI160X720, which shares the identical ISO 15552 mounting interface, 160 mm bore, 720 mm stroke, output force, and G3/4 port. You can install the SAI directly into your existing fixtures.
The 160 mm bore features a G3/4 air port and M36x2 rod thread. It 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. The operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X720
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X720 replacement — usually within 7-8 hours.