This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX190, 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 SI63AX190
The AirTAC Airtac SI63 Standard Cylinder SI63AX190 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 SAI63AX190, 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 → SAI63AX190
- 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 SI63AX190
The AirTAC SI63AX190 is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 190mm stroke. Delivering 1559 N push force at 0.5 MPa via a G3/8 port, it is replaced by the SAI63AX190. This direct successor maintains the exact ISO 15552 mounting interface, bore, stroke, force and port size for existing fixtures.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU has an SUS420J2 stainless rod (-A) but lacks a magnet (-S), so it cannot take a CS1-B/DS1-B sensor. For high heat, Viton H seals raise the limit to 150 C.
Airtac SI63 Standard Cylinder SI63AX190 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX190 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX190 |
| 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 SAI63AX190 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 SAI63AX190 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 SI63AX190
| 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 SI63AX190 Is Used
Clamping Fixtures
Holds metal workpieces securely during machining operations using its 1559 N push force at 0.5 MPa.
Package Diverting
Actuates routing gates on production lines, moving moderate loads with a 30-800 mm/s speed range.
Material Ejection
Pushes finished components out of press dies, relying on the SUS420J2 stainless rod for moisture resistance.
Replacing the Airtac SI63 Standard Cylinder SI63AX190 with the SAI63AX190
To replace the SI63AX190, order the SAI63AX190. Verify the ISO 15552 mounting accessory (LB, FA, CA, TC), the G3/8 port, and the M16x1.5 rod thread. Because this SKU lacks a magnet, it cannot accept a sensor; if position detection is needed, select an SAI63AX190S. Sizing both ways: a 50mm bore yields 982 N push at 0.5 MPa, while an 80mm bore yields 2513 N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding. The 190mm stroke is under the 300mm side-load risk threshold, but always guide the rod to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX190
- ✓ 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 SI63AX190 FAQ
Yes, the SI63AX190 is discontinued. The direct replacement is the AirTAC SAI63AX190. It shares the identical ISO 15552 mounting interface, 63mm bore, 190mm stroke, output force, and G3/8 port, fitting seamlessly into existing machinery.
It 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 max of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63AX190
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX190 replacement — usually within 7-8 hours.