This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1150SN, 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 SI63X1150SN
The AirTAC SI63 Standard Cylinder SI63X1150SN 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 SAI63X1150SN, 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 → SAI63X1150SN
- 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 SI63X1150SN
The AirTAC SI63X1150SN is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 1150mm stroke. It delivers 1559N push force at 0.5MPa via a G3/8 port. The direct replacement is the SAI63X1150SN, matching the interface, bore, stroke, force, and mounting. The SAI upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. It also adds SAIL, SAIF, and BSAI lock variants absent from the SI line.
This NBR-sealed unit operates from -20 to +70C, with a Viton H option for high heat. The integrated magnet supports CS1-B/DS1-B sensors. Note that a plain cylinder drifts on air loss; use an external rod lock or pilot check valve for load holding.
Airtac SI63 Standard Cylinder SI63X1150SN Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1150SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1150SN |
| 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 SAI63X1150SN 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 SAI63X1150SN 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 SI63X1150SN
| 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 SI63X1150SN Is Used
Long-Stroke Diversion
Pushes heavy pallets across 1150mm transfer lines using the 1559N thrust at 0.5MPa.
Large Press Ejection
Cycles finished parts out of deep machinery beds relying on the 30mm adjustable cushion.
Replacing the Airtac SI63 Standard Cylinder SI63X1150SN with the SAI63X1150SN
To replace the SI63X1150SN, order the SAI63X1150SN to retain the exact ISO 15552 mounting dimensions, 63mm bore, 1150mm stroke, G3/8 port, and magnet. Confirm your thread standard (PT, G, or NPT) and mounting accessory (LB, FA, TC, etc.). For force sizing, this bore yields 1559N at 0.5MPa; if less force is needed, a 50mm bore offers 982N, while an 80mm bore provides 2513N. Because the 1150mm stroke exceeds 300mm, use an external guide to prevent rod bending and side-load damage. The air cushion only decelerates the piston near stroke end; it does not hold the load. For dead-load holding, specify an external pilot check valve or choose the SAIL or BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1150SN
- ✓ 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 SI63X1150SN FAQ
Yes, the SI63X1150SN is discontinued. The direct replacement is the SAI63X1150SN. It shares the identical ISO 15552 mounting interface, 63mm bore, 1150mm stroke, output force, and G3/8 port, fitting directly into existing fixtures.
At 0.5MPa it pushes 1559N and pulls 1402N. At 0.7MPa push is 2182N, and at 0.9MPa it is 2805N. The theoretical max is 318kgf at 1.0MPa. Operating speed is 30-800mm/s. It uses a 20mm rod, M16x1.5 thread, and 30mm cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1150SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1150SN replacement — usually within 7-8 hours.