This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X410, 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 SI63X410
The AirTAC SI63 Standard Cylinder SI63X410 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 410mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X410, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke410 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X410
- 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 SI63X410
The AirTAC SI63X410 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 410 mm stroke, delivering 1559 N push force at 0.5 MPa via a G3/8 port. AirTAC replaced this legacy unit with the SAI63X410, a direct upgrade retaining the exact interface, bore, stroke, force and mounting dimensions.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63X410 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X410 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X410 |
| Bore size | Ø63 mm |
| Stroke | 410 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 SAI63X410 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 SAI63X410 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 SI63X410
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×410 | 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 SI63X410 Is Used
Material Diversion
Actuates routing gates on package conveyors, utilizing the 1559 N push force to reliably pivot heavy structural arms over the 410 mm travel.
Pallet Handling
Drives vertical lifting platforms for pallet positioning, where the 79 kg safe vertical lift capacity handles intermediate product transfer stages.
Component Ejection
Ejects machined parts from CNC fixtures, requiring external guide rails to manage side-load risks inherent to the 410 mm extended stroke.
Replacing the Airtac SI63 Standard Cylinder SI63X410 with the SAI63X410
To replace the SI63X410, order the SAI63X410, confirming the ISO 15552 mounting interface, 63 mm bore, 410 mm stroke, G3/8 port (PT/G/NPT) and your specific mounting accessory. Because this 410 mm stroke exceeds 300 mm, use external guides to prevent rod bending and side-load damage. Sizing both ways: a 50 mm bore yields 982 N push @0.5 MPa, while an 80 mm bore yields 2513 N. This plain cylinder cannot hold a load without live air; the cushion only decelerates. For load holding, use an external pilot check valve, rod lock, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X410
- ✓ 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 SI63X410 FAQ
Yes, the SI63X410 is discontinued. The direct replacement is the SAI63X410, which shares the identical ISO 15552 mounting interface, 63 mm bore, 410 mm stroke, output force, and G3/8 port.
The 63 mm bore features a G3/8 port and M16x1.5 rod thread. It delivers 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 maximum theoretical force of 318 kgf at 1.0 MPa.
Request a Quote for the SAI63X410
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X410 replacement — usually within 7-8 hours.