This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X180CA, 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 SI63X180CA
The AirTAC Airtac SI63 Standard Cylinder SI63X180CA 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 SAI63X180CA, 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 → SAI63X180CA
- 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 SI63X180CA
The AirTAC SI63X180CA is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 180mm stroke. Built with an extruded aluminum barrel, it delivers 1559N push force at 0.5MPa via a G3/8 port and M16x1.5 rod thread. Because this legacy unit is end-of-life, order the direct replacement: SAI63X180CA. It preserves the CA clevis mounting, output force, and interface dimensions.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. Note this specific SKU lacks a magnet, so it cannot accept CS1-B or DS1-B sensors. For high-heat environments, Viton H seals expand the temperature range to 0-150C.
Airtac SI63 Standard Cylinder SI63X180CA Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X180CA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X180CA |
| 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 SAI63X180CA 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 SAI63X180CA 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 SI63X180CA
| 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 SI63X180CA Is Used
Press Fit Tooling
Drives 180mm insertion strokes for bearing presses, utilizing the 1559N push force at 0.5MPa to seat components reliably.
Replacing the Airtac SI63 Standard Cylinder SI63X180CA with the SAI63X180CA
To replace the SI63X180CA, order the SAI63X180CA. Verify the ISO 15552 interface, 63mm bore, 180mm stroke, G3/8 port, and CA clevis mount. Because this unit has no -S suffix, it cannot support magnetic sensing. If sizing up or down, adjacent bores are 50mm (982N push @0.5MPa) and 80mm (2513N push @0.5MPa). A plain cylinder drifts on air loss; the air cushion only decelerates near stroke end. To hold a load, use an external pilot check valve or explore the SAIL lock and BSAI clamp-lock variants. The SAIF variant integrates a 4M valve for bores 32-100.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X180CA
- ✓ 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 SI63X180CA FAQ
Yes, the SI63X180CA is discontinued. The direct replacement is the SAI63X180CA. It is dimensionally interchangeable per ISO 15552, retaining the same 63mm bore, 180mm stroke, G3/8 port, CA mount, and output force.
The G3/8 port feeds a 20mm rod. Force output is 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N push at 0.9MPa, and a 318kgf maximum at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X180CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X180CA replacement — usually within 7-8 hours.