This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X193S, 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 SI63X193S
The AirTAC Airtac SI63 Standard Cylinder SI63X193S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 193mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X193S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke193 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X193S
- 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 SI63X193S
The AirTAC SI63X193S is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 193mm stroke. Delivering 1559 N push force at 0.5 MPa via a G3/8 port, it is replaced by the SAI63X193S. This direct successor matches the exact ISO 15552 mounting interface, bore, stroke, output force, and accessories.
The SAI upgrade features a revised piston seal using two Y-shaped one-way elements for low start-up pressure and extended life. The original -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family expands options with SAIL, SAIF, and BSAI lock variants.
Airtac SI63 Standard Cylinder SI63X193S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X193S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X193S |
| Bore size | Ø63 mm |
| Stroke | 193 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 SAI63X193S 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 SAI63X193S 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 SI63X193S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×193 | 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 SI63X193S Is Used
Mid-Tonnage Clamping
Secures heavy workpieces during CNC machining, utilizing the 1559 N push force to hold parts rigidly against fixture stops.
Package Diversion
Actuates routing gates on high-speed packaging lines, where the 193mm stroke provides ample travel to redirect pallets.
Replacing the Airtac SI63 Standard Cylinder SI63X193S with the SAI63X193S
To replace the SI63X193S, order the SAI63X193S. Verify the ISO 15552 mounting interface (LB, FA, CA, TC, etc.), the G3/8 port thread (PT, G, or NPT), and the -S magnet for current AirTAC switches. For sizing, the 63mm bore gives 1559 N push at 0.5 MPa; dropping to a 50mm bore yields 982 N, while an 80mm bore provides 2513 N. 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 193mm stroke, side-load is low, but always guide the rod to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X193S
- ✓ 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 SI63X193S FAQ
Yes, the AirTAC SI63X193S is discontinued. The direct replacement is the SAI63X193S. It is dimensionally interchangeable per ISO 15552, matching the 63mm bore, 193mm stroke, G3/8 port, and mounting interface.
The 63mm bore features a G3/8 port and provides 1559 N push and 1402 N pull at 0.5 MPa. At 0.7 MPa it pushes 2182 N, and the theoretical maximum force is 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X193S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X193S replacement — usually within 7-8 hours.