This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X220SN, 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 SI63X220SN
The AirTAC Airtac SI63 Standard Cylinder SI63X220SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 220mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X220SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke220 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X220SN
- 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 SI63X220SN
The AirTAC SI63X220SN is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 220 mm stroke. It delivers 1559 N push force at 0.5 MPa through a G3/8 port. AirTAC replaced this legacy unit with the SAI63X220SN, a direct upgrade sharing the exact ISO 15552 mounting interface, bore, stroke, output force, and port size.
The SAI successor features an upgraded piston seal using two Y-shaped one-way elements for low start-up pressure and extended life. This NBR-sealed unit operates from -20 to +70 C, with a Viton H option for high heat. The built-in magnet supports CS1-B/DS1-B switches.
Airtac SI63 Standard Cylinder SI63X220SN Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X220SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X220SN |
| Bore size | Ø63 mm |
| Stroke | 220 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 SAI63X220SN 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 SAI63X220SN 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 SI63X220SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×220 | 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 SI63X220SN Is Used
Package Diversion
Drives diverter arms on packaging lines, utilizing the 1559 N push force at 0.5 MPa to redirect heavy cartons reliably at speed.
Clamp Actuation
Secures medium-weight workpieces in CNC machining fixtures, providing stable 220 mm travel for loading and unloading operations.
Pallet Stopper
Functions as a pneumatic stop in pallet handling conveyors, using its 79 kg vertical lift capacity to halt goods on demand.
Replacing the Airtac SI63 Standard Cylinder SI63X220SN with the SAI63X220SN
To replace the SI63X220SN, order the SAI63X220SN. Confirm the ISO 15552 mounting interface, 63 mm bore, 220 mm stroke, G3/8 port, and your specific mounting accessory (LB, FA, TC, etc.). The S suffix indicates a piston magnet for CS1-B/DS1-B sensors, and N specifies NBR seals. Because 220 mm exceeds standard strokes, ensure your guide handles side loads to prevent rod bending. For sizing, a 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. Note that a plain cylinder drifts without live air; the cushion only decelerates. For load holding, use an external pilot check valve, rod lock, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X220SN
- ✓ 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 SI63X220SN FAQ
Yes, the SI63X220SN is discontinued. The direct replacement is the SAI63X220SN. It shares the identical ISO 15552 mounting interface, 63 mm bore, 220 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly while adding an upgraded piston seal.
This 63 mm bore double-acting cylinder features a G3/8 air 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. It operates at speeds of 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X220SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X220SN replacement — usually within 7-8 hours.