This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X550FA, 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 SI160X550FA
The AirTAC Airtac SI160 Standard Cylinder SI160X550FA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 550mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X550FA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke550 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X550FA
- 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 SI160X550FA
The AirTAC SI160X550FA is a discontinued double-acting ISO 15552 profile cylinder with a 160mm bore and 550mm stroke. It delivers 10053N push force at 0.5MPa via a G3/4 port. The direct replacement is the SAI160X550FA, which matches the exact FA flange mounting interface, M36x2 rod thread, and output force.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. Note this non-magnet SKU cannot take a sensor; legacy SI sensors were CS1-B/DS1-B. For high heat, Viton H seals raise the temperature limit to 150C.
Airtac SI160 Standard Cylinder SI160X550FA Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X550FA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X550FA |
| Bore size | Ø160 mm |
| Stroke | 550 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 SAI160X550FA 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 SAI160X550FA 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 SI160X550FA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×550 | 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 SI160X550FA Is Used
Heavy Machinery Forming
Drives large presses and forming fixtures requiring up to 10053N of push force at 0.5MPa, utilizing the FA flange mount for rigid heavy-duty alignment.
Long-Stroke Pressing
Executes 550mm extended travel cycles for deep drawing or pressing tasks, relying on external guides to mitigate rod-bending side loads.
Replacing the Airtac SI160 Standard Cylinder SI160X550FA with the SAI160X550FA
To replace the SI160X550FA, order the SAI160X550FA. Confirm the ISO 15552 FA flange interface, 550mm stroke, G3/4 port, and M36x2 thread. Because this SKU lacks the -S magnet, it cannot accept a CS1-B/DS1-B sensor. If sizing alternatives, neighboring bores (125mm or 200mm) offer different footprints; at 0.5MPa this 160mm bore yields 10053N push. For the 550mm stroke, use external guides to prevent rod bending and side-load wear. The cushion only decelerates; it does not hold load. For load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X550FA
- ✓ 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 SI160X550FA FAQ
Yes, the SI160X550FA is discontinued. The direct replacement is the SAI160X550FA. It is dimensionally interchangeable per ISO 15552, retaining the same 160mm bore, 550mm stroke, FA flange mount, G3/4 port, and 10053N force. You simply order the SAI equivalent.
This double-acting cylinder uses a G3/4 air port. It generates 10053N push and 9425N pull at 0.5MPa, 14074N push at 0.7MPa, 18095N push at 0.9MPa, and a theoretical maximum of 2050 kgf at 1.0MPa. The speed range is 30-500mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X550FA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X550FA replacement — usually within 7-8 hours.