This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X195SN, 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 SI63X195SN
The AirTAC SI63 Standard Cylinder SI63X195SN 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 SAI63X195SN, 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 → SAI63X195SN
- 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 SI63X195SN
The AirTAC SI63X195SN is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 195mm stroke. It delivers 1559N push force at 0.5MPa via a G3/8 port. The direct replacement is the SAI63X195SN, which shares the exact ISO 15552 mounting interface, bore, stroke, force and port. This 195mm stroke is a non-standard length, so verify your fixture clearance.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL, SAIF and BSAI variants the SI lacked. The NBR seal handles -20 to +70C (Viton H raises this to 150C). Your -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI63 Standard Cylinder SI63X195SN Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X195SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X195SN |
| 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 SAI63X195SN 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 SAI63X195SN 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 SI63X195SN
| 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 SI63X195SN Is Used
Mid-Tonnage Clamping
Secures heavy workpieces in CNC machining fixtures, utilizing the 1559N push force at 0.5MPa to hold parts rigidly against cutting forces.
Package Diversion
Actuates sorting arms on high-speed packaging lines, where the 30-800mm/s speed range and 1402N pull force reliably redirect heavy cartons.
Replacing the Airtac SI63 Standard Cylinder SI63X195SN with the SAI63X195SN
To replace the SI63X195SN, order the SAI63X195SN. Confirm the ISO 15552 mounting interface (LB, FA, CA, TC, etc.), the G3/8 port, the M16x1.5 rod thread, and the -S magnet for position sensing. Because this 195mm stroke is non-standard, double-check overall length. For sizing alternatives, a 50mm bore yields 982N push at 0.5MPa, while an 80mm bore provides 2513N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant. At 195mm stroke, guide external loads to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X195SN
- ✓ 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 SI63X195SN FAQ
Yes, the SI63X195SN is discontinued. The direct replacement is the SAI63X195SN. It is dimensionally interchangeable per ISO 15552, retaining the same 63mm bore, 195mm stroke, output force, G3/8 port, and mounting accessories.
The 63mm bore provides 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. The operating speed is 30-800mm/s, and it features a 30mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X195SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X195SN replacement — usually within 7-8 hours.