This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X220, 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 SI63X220
The AirTAC Airtac SI63 Standard Cylinder SI63X220 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 SAI63X220, 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 → SAI63X220
- 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 SI63X220
The AirTAC SI63X220 is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 220mm stroke. It delivers 1559N push and 1402N pull at 0.5MPa, using a G3/8 port and M16x1.5 rod thread. AirTAC replaced this legacy unit with the SAI63X220, a direct sharing the exact ISO 15552 mounting interface, force and dimensions.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this non-magnet SKU cannot take a sensor; legacy -S versions used CS1-B/DS1-B switches. For high heat, Viton H seals raise the temperature range to 0-150C.
Airtac SI63 Standard Cylinder SI63X220 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X220 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X220 |
| 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 SAI63X220 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 SAI63X220 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 SI63X220
| 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 SI63X220 Is Used
Mid-Tonnage Clamping
Secures heavy workpieces in machining fixtures using 1559N of push force at 0.5MPa.
Package Diversion
Actuates sorting gates on high-speed lines, operating reliably at 30-800mm/s.
Pallet Ejection
Pushes loaded pallets from indexing stations with a 220mm extension stroke.
Replacing the Airtac SI63 Standard Cylinder SI63X220 with the SAI63X220
To replace the SI63X220, order the SAI63X220. Confirm the ISO 15552 mounting accessory (LB, FA, TC, etc.), the G3/8 port and the 220mm stroke. This non-magnet version lacks sensing; if position detection is needed, specify an SAI63X220S and use current AirTAC switches. Sizing both ways: a 50mm bore yields 982N push at 0.5MPa, while an 80mm bore yields 2513N. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use the SAIL lock, BSAI clamp-lock, or an external pilot check valve. At 220mm stroke, ensure guide rails carry side loads to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X220
- ✓ 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 SI63X220 FAQ
Yes, the SI63X220 is discontinued. The direct replacement is the AirTAC SAI63X220. It shares the identical ISO 15552 mounting interface, 63mm bore, 220mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The 63mm bore features a G3/8 air port and M16x1.5 rod thread. It generates 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.
Request a Quote for the SAI63X220
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X220 replacement — usually within 7-8 hours.