This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X180SH, 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 SI63X180SH
The AirTAC SI63 Standard Cylinder SI63X180SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 180mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X180SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X180SH
- 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 SI63X180SH
The AirTAC SI63X180SH is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore, 180 mm stroke, and a high-temperature Viton H seal. Delivering 1559 N push force at 0.5 MPa via a G3/8 port, it is replaced by the direct replacement SAI63X180SH. The SAI shares the exact ISO 15552 mounting interface, bore, stroke, and force. The SAI upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure and long life.
This legacy -S model includes a piston magnet for CS1-B/DS1-B switches (the SAI uses current AirTAC switches). The Viton H seal extends the operating temperature to 0-150 C. Note that 180 mm is a nonstandard stroke. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. A plain cylinder drifts on air loss; the cushion only decelerates.
Airtac SI63 Standard Cylinder SI63X180SH Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X180SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X180SH |
| Bore size | Ø63 mm |
| Stroke | 180 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 SAI63X180SH 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 SAI63X180SH 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 SI63X180SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×180 | 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 SI63X180SH Is Used
Hot End Ejection
Clamp and eject parts near heat sources using the Viton H seal rated for 0-150 C, providing 1559 N push force at 0.5 MPa.
Replacing the Airtac SI63 Standard Cylinder SI63X180SH with the SAI63X180SH
To replace the discontinued SI63X180SH, order the SAI63X180SH direct. Confirm the ISO 15552 mounting interface, 63 mm bore, 180 mm nonstandard stroke, G3/8 port, and your mounting accessory. The -S magnet and -H Viton seal carry over. Sizing both ways: the 63 mm bore yields 1559 N push at 0.5 MPa (2182 N at 0.7 MPa); if less force is needed, a 50 mm bore gives 982 N, or step up to an 80 mm bore for 2513 N. For load holding on air loss, the cushion only decelerates; add an external rod lock, pilot check valve, or use the SAIL/BSAI lock variant. At 180 mm stroke, side-load is low, but ensure rigid guiding to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X180SH
- ✓ 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 SI63X180SH FAQ
Yes, the SI63X180SH is discontinued. The direct replacement is the SAI63X180SH. It shares the same ISO 15552 mounting interface, 63 mm bore, 180 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The 63 mm bore uses a G3/8 port. Theoretical forces 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 maximum force of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X180SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X180SH replacement — usually within 7-8 hours.