This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX160S, 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 SI63 Standard Cylinder SI63BX160S
The AirTAC Airtac SI63 Standard Cylinder SI63BX160S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 160mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63BX160S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke160 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63BX160S
- 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 SI63 Standard Cylinder SI63BX160S
The AirTAC SI63BX160S is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 160mm stroke. It features a SUS304 stainless piston rod, a G3/8 air port, and delivers 1559N push force at 0.5MPa. The direct replacement is the SAI63BX160S, matching the interface, bore, stroke, force, port and mounting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI lock variants the SI lacked. The -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63BX160S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX160S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX160S |
| Bore size | Ø63 mm |
| Stroke | 160 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI63BX160S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAI63BX160S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI63 Standard Cylinder SI63BX160S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×160 | 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 SI63 Standard Cylinder SI63BX160S Is Used
Stainless Rod Actuation
Ideal for packaging machinery requiring corrosion resistance, using the SUS304 rod to push 1559N at 0.5MPa.
Mid-Range Diverting
Provides robust 160mm stroke diverting or sorting force on material handling lines with G3/8 air supply.
Replacing the Airtac SI63 Standard Cylinder SI63BX160S with the SAI63BX160S
To replace the SI63BX160S, order the SAI63BX160S. Confirm the ISO 15552 mounting interface, G3/8 port, M16x1.5 rod thread, and the -S magnet for CS1-B/DS1-B switches. If downsizing, the 50mm bore yields 982N push at 0.5MPa; if upsizing, the 80mm bore provides 2513N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding, or specify the SAIL/BSAI lock variant. At 160mm stroke, rod bending is minimal, but for any stroke over 300mm, guide side loads to prevent rod damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX160S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI63 Standard Cylinder SI63BX160S FAQ
Yes, the SI63BX160S is discontinued. The direct replacement is the SAI63BX160S. It is dimensionally interchangeable per ISO 15552, keeping the same 63mm bore, 160mm stroke, G3/8 port, SUS304 rod, and mounting fixtures.
It has a G3/8 air port. Force ratings are 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N push at 0.9MPa, and a theoretical max of 318kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63BX160S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX160S replacement — usually within 7-8 hours.