This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X660S, 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 SI63X660S
The AirTAC Airtac SI63 Standard Cylinder SI63X660S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 660mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X660S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke660 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X660S
- 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 SI63X660S
The AirTAC SI63X660S is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 660mm stroke. Delivering 1559N push force at 0.5MPa via a G3/8 port, it is replaced by the SAI63X660S. This direct upgrade shares identical ISO 15552 mounting dimensions, bore, stroke and force, fitting existing fixtures perfectly.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The -S suffix means a piston magnet for CS1-B/DS1-B sensors; the SAI uses current AirTAC switches. For load holding, the SAIL lock or BSAI clamp-lock variants are recommended, as standard cushions only decelerate.
Airtac SI63 Standard Cylinder SI63X660S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X660S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X660S |
| Bore size | Ø63 mm |
| Stroke | 660 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 SAI63X660S 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 SAI63X660S 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 SI63X660S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×660 | 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 SI63X660S Is Used
Long-Stroke Diversion
Ideal for pushing heavy pallets off a main conveyor line over a 660mm reach, utilizing the 1559N thrust at 0.5MPa to overcome friction.
Press Tooling Actuation
Drives secondary press operations or stamping stations, benefiting from the adjustable 30mm air cushions at both ends to decelerate the 660mm travel.
Replacing the Airtac SI63 Standard Cylinder SI63X660S with the SAI63X660S
To replace the SI63X660S, order the SAI63X660S. Confirm the ISO 15552 mounting accessory (LB, FA, CA, TC), the G3/8 port, and the -S magnet. The 660mm stroke demands external guides to prevent rod bending under side loads. If you need more force, the 80mm bore yields 2513N push at 0.5MPa; if less, the 50mm bore yields 982N. A plain cylinder drifts on air loss, so for load holding choose the SAIL air-released lock, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X660S
- ✓ 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 SI63X660S FAQ
Yes, the SI63X660S is discontinued. The direct replacement is the AirTAC SAI63X660S. It shares the same ISO 15552 mounting interface, 63mm bore, 660mm stroke, G3/8 port, and force ratings, fitting directly into existing machinery.
The 63mm bore features a G3/8 air port and a 20mm rod. It delivers 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N push at 0.9MPa, and a theoretical max of 318kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X660S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X660S replacement — usually within 7-8 hours.