This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1350S, 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 SI63X1350S
The AirTAC SI63 Standard Cylinder SI63X1350S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1350mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X1350S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke1350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X1350S
- 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 SI63X1350S
The AirTAC SI63X1350S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 1350 mm stroke. Delivering 1559 N push force at 0.5 MPa through a G3/8 port, it is replaced by the SAI63X1350S. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, force and port.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL, SAIF and BSAI variants the SI lacked. The original -S magnet supports legacy CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63X1350S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1350S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1350S |
| Bore size | Ø63 mm |
| Stroke | 1350 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 SAI63X1350S 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 SAI63X1350S 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 SI63X1350S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1350 | 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 SI63X1350S Is Used
Long-Stroke Diversion
Drives large package pushers across wide conveyor belts over the full 1350 mm travel distance.
Pallet Handling
Shifts heavy pallets laterally on transfer decks where the 1559 N output handles substantial mass.
Material Lowering
Lowers heavy fixtures vertically, relying on external guides to manage the long 1350 mm rod extension.
Replacing the Airtac SI63 Standard Cylinder SI63X1350S with the SAI63X1350S
To replace the SI63X1350S, order the SAI63X1350S. Verify the ISO 15552 mounting interface, 63 mm bore, 1350 mm stroke, G3/8 port (PT/G/NPT thread) and your mounting accessory. The -S magnet enables CS1-B/DS1-B sensors. Sizing both ways: a 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. For this 1350 mm stroke, use external guides to prevent rod bending and side loads. A plain cylinder drifts without air; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1350S
- ✓ 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 SI63X1350S FAQ
Yes, the SI63X1350S is discontinued. The direct replacement is the SAI63X1350S. It shares the same ISO 15552 mounting interface, 63 mm bore, 1350 mm stroke, output force, G3/8 port and mounting accessories, fitting directly into existing fixtures.
This 63 mm bore double-acting cylinder uses a G3/8 port. It generates 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and a theoretical max of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1350S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1350S replacement — usually within 7-8 hours.