This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X210SN, 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 SI63X210SN
The AirTAC Airtac SI63 Standard Cylinder SI63X210SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 210mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X210SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke210 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X210SN
- 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 SI63X210SN
The AirTAC SI63X210SN is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 210 mm stroke. It delivers 1559 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI63X210SN, matching the interface, bore, stroke, force and mounting.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure. This -SN variant includes a piston magnet for CS1-B/DS1-B sensors and NBR seals (-20 to +70 C).
Airtac SI63 Standard Cylinder SI63X210SN Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X210SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X210SN |
| Bore size | Ø63 mm |
| Stroke | 210 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 SAI63X210SN 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 SAI63X210SN 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 SI63X210SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×210 | 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 SI63X210SN Is Used
Mid-Tonnage Pressing
Applies 1559 N of push force at 0.5 MPa for seating bearings or light stamping tasks in automated cells.
Package Diversion
Drives 210 mm stroke diverters or sorting gates on production lines, benefiting from adjustable end cushions.
Replacing the Airtac SI63 Standard Cylinder SI63X210SN with the SAI63X210SN
To replace the SI63X210SN, order the SAI63X210SN. Verify the ISO 15552 mounting interface, 63 mm bore, 210 mm stroke, G3/8 port, and mounting accessory. Because 210 mm is a non-standard stroke, confirm availability. The -S magnet works with legacy CS1-B/DS1-B switches, while the SAI uses current AirTAC switches. For sizing, the 50 mm bore yields 982 N push at 0.5 MPa, and the 80 mm bore yields 2513 N. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. Strokes over 300 mm require guide rails to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X210SN
- ✓ 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 SI63X210SN FAQ
Yes, the SI63X210SN is discontinued. The direct replacement is the SAI63X210SN. It is dimensionally interchangeable per ISO 15552, retaining the same 63 mm bore, 210 mm stroke, output force, G3/8 port, and mounting fixtures.
This double-acting cylinder features a G3/8 port. It provides 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and 2805 N push at 0.9 MPa. The theoretical maximum force is 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X210SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X210SN replacement — usually within 7-8 hours.