This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X200SFTC, 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 SI63X200SFTC
The AirTAC Airtac SI63 Standard Cylinder SI63X200SFTC 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 SAI63X200SFTC, 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 → SAI63X200SFTC
- 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 SI63X200SFTC
The AirTAC SI63X200SFTC is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 200 mm stroke. It delivers 1559 N push and 1402 N pull at 0.5 MPa, utilizing a G3/8 port and M16x1.5 rod thread. AirTAC replaced this legacy unit with the SAI63X200SFTC, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, force, and FTC trunnion accessory.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This -S model includes a piston magnet for legacy CS1-B/DS1-B sensors, and the SAI family introduces SAIL, SAIF, and BSAI lock variants the SI line lacked.
Airtac SI63 Standard Cylinder SI63X200SFTC Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X200SFTC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X200SFTC |
| 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 SAI63X200SFTC 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 SAI63X200SFTC 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 SI63X200SFTC
| 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 SI63X200SFTC Is Used
Clamping Fixtures
Provides 1559 N of clamping thrust at 0.5 MPa for securing mid-weight machined components during milling or drilling operations.
Package Diverting
Actuates diverter arms on packaging lines with a 200 mm stroke, moving cartons efficiently at operating speeds up to 800 mm/s.
Pallet Stops
Functions as a robust pneumatic stop gate for pallet handling, utilizing the FTC trunnion mount to handle 79 kg vertical lift loads.
Replacing the Airtac SI63 Standard Cylinder SI63X200SFTC with the SAI63X200SFTC
To replace the discontinued SI63X200SFTC, order the SAI63X200SFTC direct. Verify your ISO 15552 interface, 63 mm bore, 200 mm stroke, G3/8 port (PT/G/NPT), FTC trunnion mount, and the -S magnet. If you need to size up or down, neighboring bores are 50 mm (982 N push @0.5 MPa) and 80 mm (2513 N push @0.5 MPa). A plain cylinder drifts on air loss since the air cushion only decelerates near stroke end; for load holding, specify an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant. The 200 mm stroke is safe from rod-bending side-load issues, but always guide the load for long strokes.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X200SFTC
- ✓ 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 SI63X200SFTC FAQ
Yes, the SI63X200SFTC is discontinued. The direct replacement is the SAI63X200SFTC. It features the same ISO 15552 mounting interface, 63 mm bore, 200 mm stroke, G3/8 port, and FTC trunnion mount, but includes an upgraded two Y-shaped element piston seal for longer life.
The 63 mm bore features a G3/8 air port and M16x1.5 rod thread. It generates 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N push at 0.9 MPa, and a theoretical maximum force of 318 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X200SFTC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X200SFTC replacement — usually within 7-8 hours.