This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X720S, 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 SI160X720S
The AirTAC SI160 Standard Cylinder SI160X720S 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 SAI160X720S, 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 → SAI160X720S
- 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 SI160X720S
The AirTAC SI160X720S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 720 mm stroke. It delivers 10053 N push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI160X720S, which matches the exact bore, stroke, output force, port size, and ISO 15552 mounting interface for seamless fixture integration.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also introduces lock and clamp variants (SAIL, BSAI) absent in the legacy line. This -S model includes a piston magnet for CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160X720S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X720S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X720S |
| 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 SAI160X720S 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 SAI160X720S 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 SI160X720S
| 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 SI160X720S Is Used
Heavy Machinery Forming
Drives large presses and forming fixtures requiring high thrust, utilizing the 10053 N push force at 0.5 MPa to shape heavy metal components.
Oversized Assembly Transfer
Shifts bulky fabricated structures between stations over a 720 mm distance, relying on external guides to prevent rod bending during transit.
Replacing the Airtac SI160 Standard Cylinder SI160X720S with the SAI160X720S
To replace the SI160X720S, order the SAI160X720S. Verify your ISO 15552 mounting accessories (LB, FA, TC, etc.), the G3/4 port threads, and the M36x2 rod-end connection. Because the 720 mm stroke exceeds 300 mm, use an external guide to prevent rod bending and side-load damage. If sizing both ways, neighboring bores (125 mm or 200 mm) offer different force classes; at 0.5 MPa, this 160 mm bore yields 10053 N push and 9425 N pull. A plain cylinder drifts without live air—the cushion only decelerates—so for load holding, specify the SAIL or BSAI lock variant, or add an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X720S
- ✓ 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 SI160X720S FAQ
Yes, the SI160X720S is discontinued. The direct replacement is the SAI160X720S. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 720 mm stroke, output force, G3/4 port, and mounting interface.
This double-acting cylinder operates at 0.15-1.0 MPa (proof 1.5 MPa) with a speed of 30-500 mm/s. 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. It features a 50 mm adjustable air cushion at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X720S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X720S replacement — usually within 7-8 hours.