This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX210S, 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 SI160AX210S
The AirTAC Airtac SI160 Standard Cylinder SI160AX210S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 210mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX210S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke210 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX210S
- 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 SI160AX210S
The AirTAC SI160AX210S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 210 mm stroke. Delivering 10053 N push force at 0.5 MPa, it features a G3/4 port, a 40 mm SUS420J2 stainless steel rod, and a built-in piston magnet for CS1-B/DS1-B sensors. The direct replacement is the SAI160AX210S, which shares the exact ISO 15552 mounting interface, force, and porting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI160 Standard Cylinder SI160AX210S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX210S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX210S |
| Bore size | Ø160 mm |
| Stroke | 210 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 SAI160AX210S 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 SAI160AX210S 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 SI160AX210S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×210 | 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 SI160AX210S Is Used
Heavy Press Forming
Drives large stamping and forming presses requiring up to 14074 N of thrust at 0.7 MPa, utilizing the adjustable 50 mm cushion to absorb high kinetic energy.
Large Mold Handling
Actuates heavy injection mold carts or clamping fixtures where the SUS420J2 stainless rod provides necessary corrosion resistance in humid environments.
Replacing the Airtac SI160 Standard Cylinder SI160AX210S with the SAI160AX210S
To replace the SI160AX210S, order the SAI160AX210S. Confirm the ISO 15552 mounting interface, 210 mm stroke, G3/4 port, and the -S magnet for current AirTAC switches. If downsizing, a 125 mm bore yields 6136 N push at 0.5 MPa; if upsizing, a 200 mm bore provides 15708 N. This -A variant uses a SUS420J2 rod for corrosion resistance. For strokes over 300 mm, guide external rods to prevent side-load bending. A plain cylinder drifts on air loss—the cushion only decelerates—so use the SAIL or BSAI lock variant, an external rod lock, or a pilot check valve for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX210S
- ✓ 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 SI160AX210S FAQ
Yes, the AirTAC SI160AX210S is discontinued. The direct replacement is the SAI160AX210S. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 210 mm stroke, 10053 N force, G3/4 port, and mounting accessories.
It uses a G3/4 port. At 0.5 MPa it provides 10053 N push and 9425 pull force. At 0.7 MPa push is 14074 N, at 0.9 MPa push is 18095 N, and the theoretical maximum is 2050 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX210S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX210S replacement — usually within 7-8 hours.