This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X190S, 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 SI63X190S
The AirTAC SI63 Standard Cylinder SI63X190S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 190mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X190S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke190 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X190S
- 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 SI63X190S
The AirTAC SI63X190S is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore, 190mm stroke, and a built-in piston magnet for CS1-B/DS1-B switches. Delivering 1559 N push force at 0.5 MPa via a G3/8 port, it is directly replaced by the current-production SAI63X190S. This direct upgrade shares the exact same ISO 15552 mounting interface, bore, stroke, output force, and port size, fitting existing fixtures perfectly.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also introduces lock and self-valve variants (SAIL, BSAI, SAIF) absent in the legacy SI line.
Airtac SI63 Standard Cylinder SI63X190S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X190S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X190S |
| Bore size | Ø63 mm |
| Stroke | 190 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 SAI63X190S 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 SAI63X190S 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 SI63X190S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×190 | 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 SI63X190S Is Used
Clamping Actuators
Ideal for mid-tier clamping tasks on machining fixtures, providing reliable 1559 N hold at 0.5 MPa.
Line Diverters
Drives medium-weight diverting arms on packaging lines, utilizing the 190mm stroke to push products cleanly.
Replacing the Airtac SI63 Standard Cylinder SI63X190S with the SAI63X190S
To replace the SI63X190S, order the SAI63X190S. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), the G3/8 port thread (PT, G, or NPT), and the -S magnet requirement for current AirTAC switches. When sizing, a plain SI/SAI cylinder does not hold load on air loss—the cushion only decelerates. For held loads, use the SAIL or BSAI lock variants, or an external pilot check valve. For downward force, consider the 80mm bore (2513 N @0.5 MPa); for lighter duties, the 50mm bore (982 N @0.5 MPa) suffices. At 190mm stroke, rod bending is minimal, but for any stroke over 300mm, add a guide to prevent side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X190S
- ✓ 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 SI63X190S FAQ
Yes, the SI63X190S is discontinued. The direct replacement is the AirTAC SAI63X190S. It is dimensionally interchangeable per ISO 15552, retaining the same 63mm bore, 190mm stroke, G3/8 port, and mounting interface.
The 63mm bore features a G3/8 air port. Force output is 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 SAI63X190S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X190S replacement — usually within 7-8 hours.