This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX60S, 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 SI63BX60S
The AirTAC Airtac SI63 Standard Cylinder SI63BX60S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 60mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63BX60S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke60 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63BX60S
- 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 SI63BX60S
The AirTAC SI63BX60S is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore, 60mm stroke, and a SUS304 stainless steel piston rod. Delivering 1559 N push force at 0.5 MPa, it is replaced by the SAI63BX60S. This direct successor shares the exact G3/8 port, M16x1.5 thread, and ISO 15552 mounting interface for seamless fixture integration.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The original -S magnet supports CS1-B/DS1-B sensors, while the SAI family also introduces SAIL and BSAI lock variants absent in the legacy line.
Airtac SI63 Standard Cylinder SI63BX60S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX60S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX60S |
| Bore size | Ø63 mm |
| Stroke | 60 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 SAI63BX60S 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 SAI63BX60S 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 SI63BX60S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×60 | 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 SI63BX60S Is Used
Bottle Line Diverter
Routes 79 kg vertical loads of packaged beverages on a washdown line, utilizing the SUS304 rod for corrosion resistance against cleaning chemicals.
Press Ejection
Provides 935 N of safe working force to eject formed parts from a 63mm bore tooling fixture, relying on adjustable 30mm cushions for smooth stops.
Pallet Stopper
Acts as a pneumatic stop for heavy pallets, requiring an external rod lock since the standard cylinder cannot hold the load without live air.
Replacing the Airtac SI63 Standard Cylinder SI63BX60S with the SAI63BX60S
To replace the SI63BX60S, order the SAI63BX60S and verify the ISO 15552 mounting dimensions, 60mm stroke, G3/8 port, and the -S magnet. The -B rod denotes SUS304 stainless steel; confirm this material option on the SAI order. Sizing checks: a 50mm bore yields 982 N push at 0.5 MPa, while an 80mm bore yields 2513 N. Note that a standard cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX60S
- ✓ 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 SI63BX60S FAQ
Yes, the SI63BX60S is discontinued. The direct replacement is the SAI63BX60S. It is dimensionally interchangeable per ISO 15552, maintaining the same 63mm bore, 60mm stroke, G3/8 port, and mounting interface.
The 63mm bore features a G3/8 port. It delivers 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and a theoretical max of 318 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63BX60S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX60S replacement — usually within 7-8 hours.