This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX110S, 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 SI63BX110S
The AirTAC Airtac SI63 Standard Cylinder SI63BX110S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 110mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63BX110S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke110 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63BX110S
- 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 SI63BX110S
The AirTAC SI63BX110S is a discontinued double-acting ISO 15552 profile cylinder featuring a 63mm bore, 110mm stroke, and a SUS304 stainless steel rod. It delivers 1559 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI63BX110S, matching the exact bore, stroke, force, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and longevity. For load holding, the plain cylinder drifts without air; consider the SAIL lock or BSAI clamp-lock variants. The -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63BX110S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX110S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX110S |
| Bore size | Ø63 mm |
| Stroke | 110 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 SAI63BX110S 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 SAI63BX110S 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 SI63BX110S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×110 | 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 SI63BX110S Is Used
Stainless Rod Clamping
Ideal for packaging machinery requiring corrosion resistance, using the SUS304 rod to clamp components with 1559 N force at 0.5 MPa.
Mid-Stroke Diverting
The 110mm stroke provides precise diverting of medium-weight products on material handling lines without overextending footprint.
Replacing the Airtac SI63 Standard Cylinder SI63BX110S with the SAI63BX110S
To replace the SI63BX110S, order the SAI63BX110S. Verify the ISO 15552 mounting interface, 63mm bore, 110mm stroke, G3/8 port (PT/G/NPT thread), and the -S magnet for CS1-B/DS1-B switches. The -B rod is SUS304 stainless steel. Sizing both ways: a 50mm bore yields 982 N push at 0.5 MPa, while an 80mm bore yields 2513 N. Note that a plain cylinder does not hold load without live air; the cushion only decelerates. For secure holding, use an external pilot check valve or explore the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX110S
- ✓ 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 SI63BX110S FAQ
Yes, the SI63BX110S is discontinued. The direct replacement is the SAI63BX110S. It shares the identical ISO 15552 mounting interface, 63mm bore, 110mm stroke, force, and G3/8 port, fitting existing fixtures perfectly.
It uses a G3/8 air port. Force ratings are: 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N push at 0.9 MPa, and a theoretical maximum of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63BX110S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX110S replacement — usually within 7-8 hours.