This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X210FTC, 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 SI63X210FTC
The AirTAC Airtac SI63 Standard Cylinder SI63X210FTC 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 SAI63X210FTC, 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 → SAI63X210FTC
- 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 SI63X210FTC
The AirTAC SI63X210FTC is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 210mm stroke. It delivers 1559N push force at 0.5MPa via a G3/8 port. The direct replacement is the SAI63X210FTC, matching the exact bore, stroke, force, port and FTC trunnion mount.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. This SKU lacks a magnet, so it cannot take a sensor. Stroke 210mm is nonstandard.
Airtac SI63 Standard Cylinder SI63X210FTC Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X210FTC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X210FTC |
| 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 SAI63X210FTC 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 SAI63X210FTC 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 SI63X210FTC
| 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 SI63X210FTC Is Used
Mid-Tonnage Clamping
Secures heavy workpieces during machining operations using 1559N of thrust at 0.5MPa.
Material Diversion
FTC trunnion mount allows pivoting actuation to route large packages on production lines.
Pallet Handling
Pushes or positions loaded pallets where a 79kg vertical lift capacity is sufficient.
Replacing the Airtac SI63 Standard Cylinder SI63X210FTC with the SAI63X210FTC
To replace the SI63X210FTC, order the SAI63X210FTC. Verify the ISO 15552 interface, 63mm bore, 210mm stroke, G3/8 port, and FTC trunnion mount. This non-magnet SKU cannot accept a sensor. For sizing, a 50mm bore yields 982N push at 0.5MPa, while an 80mm bore yields 2513N. Since the 210mm stroke exceeds 300mm, ensure adequate guidance to prevent rod bending. The air cushion only decelerates; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X210FTC
- ✓ 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 SI63X210FTC FAQ
Yes, the SI63X210FTC is discontinued. The direct replacement is the SAI63X210FTC, which shares the same ISO 15552 mounting interface, bore, stroke, force, and G3/8 port.
It features a G3/8 port and provides 1559N push / 1402N pull at 0.5MPa, 2182N push at 0.7MPa, and a theoretical max of 318kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X210FTC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X210FTC replacement — usually within 7-8 hours.