This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X400FA, 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 SI160X400FA
The AirTAC Airtac SI160 Standard Cylinder SI160X400FA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 400mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X400FA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke400 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X400FA
- 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 SI160X400FA
The AirTAC SI160X400FA is a discontinued double-acting ISO 15552 profile cylinder with an FA flange mount. Delivering 10053 N push force at 0.5 MPa through a 160 mm bore and 400 mm stroke, it is replaced by the SAI160X400FA. This direct upgrade shares the exact ISO 15552 mounting interface, G3/4 port, and M36x2 rod thread.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure. Without a -S suffix, this SKU cannot take a magnetic switch. Note the air cushion only decelerates; use SAIL or BSAI lock variants for load holding.
Airtac SI160 Standard Cylinder SI160X400FA Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X400FA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X400FA |
| Bore size | Ø160 mm |
| Stroke | 400 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 SAI160X400FA 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 SAI160X400FA 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 SI160X400FA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×400 | 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 SI160X400FA Is Used
Heavy Press Operations
Drives large forming and stamping presses requiring 10053 N push at 0.5 MPa, utilizing the FA flange to withstand heavy axial loads.
Large Mold Handling
Shifts heavy injection molds on production lines, relying on the 50 mm adjustable air cushions to decelerate massive payloads smoothly.
Replacing the Airtac SI160 Standard Cylinder SI160X400FA with the SAI160X400FA
To replace the SI160X400FA, order the SAI160X400FA to match the 160 mm bore, 400 mm stroke, FA flange, and G3/4 port. The SAI family adds SAIL, SAIF, and BSAI lock/valve variants the SI lacked. If downsizing, a 125 mm bore yields 6136 N [email protected]; if upsizing, 200 mm yields 15708 N. Because this is a 400 mm stroke, use external guides to prevent rod bending and side loads. A plain cylinder drifts on air loss—use an external rod lock or pilot check valve for holding. This non-magnet SKU cannot accept CS1-B/DS1-B sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X400FA
- ✓ 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 SI160X400FA FAQ
Yes, the SI160X400FA is discontinued. The direct replacement is the SAI160X400FA. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 400 mm stroke, FA flange mount, and G3/4 port.
This double-acting cylinder has a G3/4 port. It delivers 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X400FA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X400FA replacement — usually within 7-8 hours.