This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1150S, 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 SI63X1150S
The AirTAC Airtac SI63 Standard Cylinder SI63X1150S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1150mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X1150S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke1150 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X1150S
- 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 SI63X1150S
The AirTAC SI63X1150S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 1150 mm stroke. It delivers 1559 N push and 1402 N pull at 0.5 MPa through a G3/8 port. AirTAC replaced this legacy unit with the SAI63X1150S, a direct sharing the exact ISO 15552 mounting interface, M16x1.5 rod thread and 30 mm cushions.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF and BSAI lock variants the SI lacked. Your -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI63 Standard Cylinder SI63X1150S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1150S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1150S |
| Bore size | Ø63 mm |
| Stroke | 1150 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 SAI63X1150S 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 SAI63X1150S 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 SI63X1150S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1150 | 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 SI63X1150S Is Used
Long-Stroke Diversion
Drives large packages across wide conveyor belts using the 1150 mm stroke and 1559 N push force.
Pallet Push-Off
Shoves heavy pallets to adjacent packing lanes, utilizing the 79 kg vertical lift capacity safely.
Material Lowering
Lowers bulky fixtures down vertical tracks, requiring external guides to prevent rod bending.
Replacing the Airtac SI63 Standard Cylinder SI63X1150S with the SAI63X1150S
To replace the SI63X1150S, order the SAI63X1150S. Confirm the ISO 15552 mounting interface, G3/8 port, M16x1.5 thread and your -S magnet requirement. For sizing, a 50 mm bore gives 982 N [email protected], while an 80 mm bore yields 2513 N. Note that a plain cylinder drifts on air loss as cushions only decelerate; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. At 1150 mm, prevent rod bending by using an external guide to manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1150S
- ✓ 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 SI63X1150S FAQ
Yes, the SI63X1150S is discontinued. The direct replacement is the SAI63X1150S. It shares the same ISO 15552 mounting interface, 63 mm bore, 1150 mm stroke, output force, G3/8 port and accessories, fitting existing fixtures perfectly.
The 63 mm bore uses a G3/8 port. 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 theoretical max of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1150S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1150S replacement — usually within 7-8 hours.