This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX80S, 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 SI160AX80S
The AirTAC Airtac SI160 Standard Cylinder SI160AX80S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 80mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX80S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke80 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX80S
- 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 SI160AX80S
The AirTAC SI160AX80S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, delivering a robust 10053 N push force at 0.5 MPa. It features a SUS420J2 stainless steel piston rod (-A) and a built-in magnet (-S) for legacy CS1-B/DS1-B switches. The direct replacement is the SAI160AX80S, retaining the same 160 mm bore, 80 mm stroke, G3/4 port, and ISO 15552 mounting interface.
The SAI upgrade introduces an advanced piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also adds SAIL and BSAI lock variants absent from the legacy SI line.
Airtac SI160 Standard Cylinder SI160AX80S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX80S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX80S |
| Bore size | Ø160 mm |
| Stroke | 80 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 SAI160AX80S 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 SAI160AX80S 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 SI160AX80S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×80 | 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 SI160AX80S Is Used
Heavy Machinery Forming
Drives large forming presses and heavy-duty industrial machinery requiring 10053 N of thrust at 0.5 MPa within an 80 mm stroke.
Automated Clamp Systems
Provides high-force clamping on large automated welding or machining fixtures using the SUS420J2 stainless rod for corrosion resistance.
Replacing the Airtac SI160 Standard Cylinder SI160AX80S with the SAI160AX80S
To replace the SI160AX80S, order the SAI160AX80S and verify the ISO 15552 mounting interface, 80 mm stroke, G3/4 port, and -S magnet. The -A rod denotes SUS420J2 stainless steel, which must be specified if required. If sizing up or down, neighboring bores (125 mm or 200 mm) offer different force classes. Note that a plain cylinder drifts on air loss; the air cushion only decelerates the piston near stroke end. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX80S
- ✓ 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 SI160AX80S FAQ
Yes, the SI160AX80S is discontinued. The direct replacement is the SAI160AX80S. It is dimensionally interchangeable per ISO 15552, maintaining the same 160 mm bore, 80 mm stroke, output force, G3/4 port, and mounting accessories.
This double-acting cylinder uses a G3/4 air port. 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 maximum of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX80S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX80S replacement — usually within 7-8 hours.