This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX800S, 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 SI160AX800S
The AirTAC SI160 Standard Cylinder SI160AX800S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 800mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX800S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke800 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX800S
- 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 SI160AX800S
The AirTAC SI160AX800S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 800 mm stroke. It delivers 10053 N push force at 0.5 MPa. The direct replacement is the SAI160AX800S, matching the bore, stroke, G3/4 port, and ISO 15552 mounting interface for existing fixtures. The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. This -A variant uses a SUS420J2 stainless rod, and the -S magnet works with CS1-B/DS1-B sensors.
The SAI family adds SAIL, SAIF, and BSAI lock variants the SI lacked. Note that a plain cylinder drifts on air loss; the cushion only decelerates. For high heat, Viton H seals raise the -20 to +70 C range to 150 C.
Airtac SI160 Standard Cylinder SI160AX800S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX800S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX800S |
| Bore size | Ø160 mm |
| Stroke | 800 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 SAI160AX800S 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 SAI160AX800S 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 SI160AX800S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×800 | 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 SI160AX800S Is Used
Heavy Machinery Forming
Drives large presses and forming fixtures requiring 10053 N thrust at 0.5 MPa, utilizing the 800 mm stroke for deep-draw or extended travel operations.
Automated Material Routing
Actuates heavy-duty diverter gates on high-capacity conveyor lines, relying on the G3/4 port and 30-500 mm/s speed for smooth transitions.
Replacing the Airtac SI160 Standard Cylinder SI160AX800S with the SAI160AX800S
To replace the SI160AX800S, order the SAI160AX800S. Verify the ISO 15552 mounting interface, 160 mm bore, 800 mm stroke, G3/4 port, and M36x2 rod thread. This -A model specifies a SUS420J2 stainless rod, and the -S denotes a piston magnet for legacy CS1-B/DS1-B switches (the SAI uses current AirTAC switches). When sizing both ways, a 125 mm bore yields 6136 N push at 0.5 MPa, while a 200 mm bore yields 15708 N. For this 800 mm stroke, use external guides to prevent rod bending and side-load damage. The cylinder does not hold load without live air; for drop prevention, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX800S
- ✓ 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 SI160AX800S FAQ
Yes, the AirTAC SI160AX800S is discontinued. The direct replacement is the SAI160AX800S. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 800 mm stroke, 10053 N force, G3/4 port, and mounting interface.
The bore is 160 mm with a G3/4 air port. At 0.5 MPa it provides 10053 N push and 9425 N pull force. At 0.7 MPa push is 14074 N, and at 0.9 MPa it is 18095 N. The theoretical maximum force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX800S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX800S replacement — usually within 7-8 hours.