This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X200SN, 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 SI63X200SN
The AirTAC Airtac SI63 Standard Cylinder SI63X200SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 200mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X200SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke200 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X200SN
- 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 SI63X200SN
The AirTAC SI63X200SN is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 200mm stroke. Delivering 1559 N push force at 0.5 MPa through a G3/8 port, it is replaced by the direct replacement SAI63X200SN. This successor shares the exact ISO 15552 mounting interface, bore, stroke, force, port and accessories, fitting existing fixtures perfectly.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SI63X200SN includes a piston magnet for CS1-B/DS1-B switches and an NBR seal (-20 to +70 C); a Viton H option extends heat to 150 C.
Airtac SI63 Standard Cylinder SI63X200SN Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X200SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X200SN |
| Bore size | Ø63 mm |
| Stroke | 200 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 SAI63X200SN 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 SAI63X200SN 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 SI63X200SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×200 | 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 SI63X200SN Is Used
Mid-Tonnage Clamping
Secures heavy workpieces during CNC machining, utilizing the 1559 N push force to hold components rigidly against cutting forces.
Package Diversion
Actuates routing gates on high-speed packaging lines, where the 200mm stroke quickly pushes cartons onto secondary tracks.
Pallet Stopper Arms
Deploys heavy-duty stop mechanisms at the end of roller conveyors to halt loaded pallets safely using the 1402 N pull force.
Replacing the Airtac SI63 Standard Cylinder SI63X200SN with the SAI63X200SN
To replace the SI63X200SN, order the SAI63X200SN. Confirm the ISO 15552 mounting interface, 63mm bore, 200mm stroke, G3/8 port (PT/G/NPT thread options), NBR seal, and the -S magnet for current AirTAC switch compatibility. If you need more force, the 80mm bore yields 2513 N push at 0.5 MPa; if less is required, the 50mm bore provides 982 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or explore the SAIL (air-released lock) or BSAI (clamp-lock) variants. The SAIF variant adds a built-in 4M valve for bores 32-100.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X200SN
- ✓ 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 SI63X200SN FAQ
Yes, the SI63X200SN is discontinued. The direct replacement is the SAI63X200SN. It shares the identical ISO 15552 mounting interface, 63mm bore, 200mm stroke, output force, G3/8 port, and accessories, fitting your existing fixtures without modification.
The 63mm bore features a G3/8 air port and provides 1559 N push / 1402 N pull at 0.5 MPa. At 0.7 MPa push is 2182 N, and 2805 N at 0.9 MPa. The theoretical maximum force is 318 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X200SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X200SN replacement — usually within 7-8 hours.