This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X572SN, 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 SI63X572SN
The AirTAC Airtac SI63 Standard Cylinder SI63X572SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 572mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X572SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke572 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X572SN
- 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 SI63X572SN
The AirTAC SI63X572SN is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 572mm stroke. Generating 1559N push force at 0.5MPa via a G3/8 port, it is replaced by the SAI63X572SN. This direct successor matches the exact mounting interface, bore, stroke, output force, and accessories.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI lock variants the SI lacked. The -N NBR seal handles -20 to +70C, while the -S magnet works with CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63X572SN Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X572SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X572SN |
| Bore size | Ø63 mm |
| Stroke | 572 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 SAI63X572SN 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 SAI63X572SN 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 SI63X572SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×572 | 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 SI63X572SN Is Used
Long-Stroke Diversion
Pushes packages across a 572mm lane shift on a sorting conveyor, utilizing the 1559N push force to overcome guide friction.
Press Ejection
Ejects formed parts from a press fixture, with the NBR seals operating reliably in ambient shop temperatures up to 70C.
Replacing the Airtac SI63 Standard Cylinder SI63X572SN with the SAI63X572SN
To replace the SI63X572SN, order the SAI63X572SN. Confirm the ISO 15552 mounting interface, 63mm bore, 572mm stroke, G3/8 port, and your specific mounting accessory. The -S magnet enables CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches. Sizing both ways: a 50mm bore gives 982N push at 0.5MPa, while an 80mm bore gives 2513N. If you need to hold the load without live air, note that the air cushion only decelerates; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. For the 572mm stroke, use an external guide to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X572SN
- ✓ 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 SI63X572SN FAQ
Yes, the AirTAC SI63X572SN is discontinued. The direct replacement is the SAI63X572SN. It is dimensionally interchangeable per ISO 15552, matching the 63mm bore, 572mm stroke, G3/8 port, and mounting interface, but adds an upgraded two Y-shaped element piston seal.
The 63mm bore uses a G3/8 port. Theoretical forces are 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, and 2805N push at 0.9MPa. The maximum theoretical force is 318kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X572SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X572SN replacement — usually within 7-8 hours.