This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX195, 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 SI63BX195
The AirTAC Airtac SI63 Standard Cylinder SI63BX195 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 195mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63BX195, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke195 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63BX195
- 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 SI63BX195
The AirTAC SI63BX195 is a discontinued double-acting ISO 15552 profile cylinder featuring a 63mm bore, 195mm stroke, and a SUS304 stainless steel rod. Delivering 1559 N of push force at 0.5 MPa, it is replaced by the SAI63BX195. This direct successor shares the exact G3/8 port, M16x1.5 thread, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63BX195 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX195 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX195 |
| Bore size | Ø63 mm |
| Stroke | 195 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 SAI63BX195 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 SAI63BX195 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 SI63BX195
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×195 | 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 SI63BX195 Is Used
Stainless Rod Actuation
Ideal for packaging lines requiring the SUS304 rod option to resist moisture while providing 1559 N of push force at 0.5 MPa.
Mid-Force Assembly
Drives clamping and pressing stations where the G3/8 port and 30-800 mm/s speed range meet standard production cycle times.
Replacing the Airtac SI63 Standard Cylinder SI63BX195 with the SAI63BX195
To replace the SI63BX195, order the SAI63BX195, confirming the ISO 15552 interface, 63mm bore, 195mm stroke, G3/8 port, and SUS304 rod. Size both ways: a 50mm bore yields 982 N push at 0.5 MPa, while an 80mm bore yields 2513 N. The air cushion only decelerates; it does not hold loads on air loss. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants. The SAI family also adds the SAIF self-valve option.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX195
- ✓ 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 SI63BX195 FAQ
Yes, the SI63BX195 is discontinued. The direct replacement is the SAI63BX195. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 63mm bore, 195mm stroke, G3/8 port, and SUS304 stainless rod.
The 63mm bore features a G3/8 air port. It delivers 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N at 0.9 MPa, and a theoretical max of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63BX195
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX195 replacement — usually within 7-8 hours.