This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX195S, 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 SI63BX195S
The AirTAC Airtac SI63 Standard Cylinder SI63BX195S 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 SAI63BX195S, 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 → SAI63BX195S
- 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 SI63BX195S
The AirTAC SI63BX195S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore, 195 mm stroke, G3/8 port, and a SUS304 stainless steel rod (-B) for corrosion resistance. It delivers 1559 N push force at 0.5 MPa. The built-in magnet (-S) supports CS1-B/DS1-B switches. You must order the direct replacement SAI63BX195S, which matches the ISO 15552 mounting interface, bore, stroke, output force, port size, and accessories exactly.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. Note that a plain cylinder drifts on air loss; the cushion only decelerates.
Airtac SI63 Standard Cylinder SI63BX195S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX195S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX195S |
| 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 SAI63BX195S 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 SAI63BX195S 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 SI63BX195S
| 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 SI63BX195S Is Used
Bottling Line Diverter
Pushes product streams between packaging lanes using the 1559 N push force, while the SUS304 rod withstands washdown environments.
Stainless Fixture Clamp
Secures raw billets in a machining fixture, using the -B corrosion-resistant rod option to handle cutting fluid exposure.
Replacing the Airtac SI63 Standard Cylinder SI63BX195S with the SAI63BX195S
To replace the SI63BX195S, order the SAI63BX195S. Confirm the ISO 15552 mounting interface, the 63 mm bore, 195 mm stroke, G3/8 port, and your mounting accessory. Retain the -B SUS304 rod and -S magnet, noting the SAI uses current AirTAC switches instead of the legacy CS1-B/DS1-B. If sizing both ways, neighboring bores are 50 mm (982 N push @0.5 MPa) and 80 mm (2513 N push @0.5 MPa). For load holding on air loss, add an external rod lock or pilot check valve, or use the SAIL/BSAI lock variant, as the cushion only decelerates. At 195 mm stroke, side-load and rod-bending risks are low, but ensure proper guide alignment.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX195S
- ✓ 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 SI63BX195S FAQ
Yes, the SI63BX195S is discontinued. The direct replacement is the SAI63BX195S. It is dimensionally interchangeable per ISO 15552, matching the 63 mm bore, 195 mm stroke, G3/8 port, and mounting interface, but features an upgraded piston seal for lower start-up pressure.
The G3/8 port is fixed by the 63 mm bore. 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 max of 318 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63BX195S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX195S replacement — usually within 7-8 hours.