This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1530S, 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 SI63X1530S
The AirTAC Airtac SI63 Standard Cylinder SI63X1530S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1530mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X1530S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke1530 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X1530S
- 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 SI63X1530S
The AirTAC SI63X1530S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 1530 mm stroke. Generating 1559 N push force at 0.5 MPa, this legacy unit is replaced by the direct replacement SAI63X1530S. The SAI upgrade shares the exact ISO 15552 mounting interface, bore, stroke, force, G3/8 port and accessories, fitting existing fixtures perfectly.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This 1530 mm length is non-standard (exceeding the 1500 mm max standard), requiring external guides to prevent rod bending. The -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63X1530S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1530S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1530S |
| Bore size | Ø63 mm |
| Stroke | 1530 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 SAI63X1530S 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 SAI63X1530S 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 SI63X1530S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1530 | 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 SI63X1530S Is Used
Long-Stroke Transfer
Pushes workpieces between machining stations over a 1530 mm span, utilizing the 1559 N thrust at 0.5 MPa to move heavy pallets along an assembly line.
Automated Press Ejection
Ejects molded parts from large presses using the 2182 N force available at 0.7 MPa, requiring external guide rails to support the extended 1530 mm rod.
Replacing the Airtac SI63 Standard Cylinder SI63X1530S with the SAI63X1530S
To replace the SI63X1530S, order the exact SAI63X1530S direct. Confirm the ISO 15552 interface, 63 mm bore, 1530 mm stroke, G3/8 port (PT/G/NPT thread options), M16x1.5 rod thread, and mounting accessory (LB, FA, CA, TC, etc.). The -S magnet enables CS1-B/DS1-B switches. Because 1530 mm exceeds the 1500 mm max standard stroke, this is made-to-order; at this length you must use external guides to prevent rod bending and side-load damage. For sizing, a 50 mm bore gives 982 N push @0.5 MPa, while an 80 mm bore yields 2513 N. A plain cylinder drifts on air loss; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1530S
- ✓ 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 SI63X1530S FAQ
Yes, the SI63X1530S is discontinued. The direct replacement is the SAI63X1530S. It is dimensionally interchangeable per ISO 15552, matching the 63 mm bore, 1530 mm stroke, G3/8 port, and mounting interface. The SAI family also adds SAIL, SAIF, and BSAI variants the SI lacked.
The 63 mm bore features a G3/8 air 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 theoretical max of 318 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1530S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1530S replacement — usually within 7-8 hours.