This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X920S, 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 SI63X920S
The AirTAC Airtac SI63 Standard Cylinder SI63X920S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 920mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X920S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke920 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X920S
- 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 SI63X920S
The AirTAC SI63X920S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 920 mm stroke. It delivers 1559 N push force at 0.5 MPa through a G3/8 port. The direct replacement is the SAI63X920S, matching the exact bore, stroke, force, port and ISO 15552 mounting interface for existing fixtures.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. The SI-S magnet supports legacy CS1-B/DS1-B sensors, while SAIL lock and BSAI clamp-lock variants offer load holding the plain model lacks.
Airtac SI63 Standard Cylinder SI63X920S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X920S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X920S |
| Bore size | Ø63 mm |
| Stroke | 920 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 SAI63X920S 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 SAI63X920S 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 SI63X920S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×920 | 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 SI63X920S Is Used
Long-Stroke Diversion
Pushes packages across a 900 mm transfer belt using the 1559 N push force, requiring external guides to prevent rod bending over the extended length.
Multi-Stage Ejection
Clears machined aluminum parts from a 900 mm deep work zone, utilizing the G3/8 port for rapid cycling and the -S magnet for position confirmation.
Replacing the Airtac SI63 Standard Cylinder SI63X920S with the SAI63X920S
To replace the SI63X920S, order the SAI63X920S. Verify the ISO 15552 mounting interface, 63 mm bore, 920 mm stroke, G3/8 port (PT/G/NPT thread), and the -S magnet for current AirTAC switches. At 0.5 MPa it yields 1559 N push; sizing down, a 50 mm bore gives 982 N, while an 80 mm bore yields 2513 N. Because the 920 mm stroke invites rod bending, use external guides to prevent side loads. A plain cylinder drifts without live air; for load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X920S
- ✓ 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 SI63X920S FAQ
Yes, the SI63X920S is discontinued. The direct replacement is the SAI63X920S. It shares the identical ISO 15552 mounting interface, 63 mm bore, 920 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The 63 mm bore uses a G3/8 port. Force output is 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 of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X920S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X920S replacement — usually within 7-8 hours.