This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X524S, 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 SI63X524S
The AirTAC SI63 Standard Cylinder SI63X524S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 524mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X524S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke524 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X524S
- 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 SI63X524S
The AirTAC SI63X524S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 524 mm stroke. Delivering 1559 N push force at 0.5 MPa through a G3/8 port, it is replaced directly by the SAI63X524S. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, force and accessories.
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.
Airtac SI63 Standard Cylinder SI63X524S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X524S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X524S |
| Bore size | Ø63 mm |
| Stroke | 524 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 SAI63X524S 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 SAI63X524S 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 SI63X524S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×524 | 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 SI63X524S Is Used
Pallet Diversion
Pushes heavy pallets sideways off a main conveyor line utilizing the 1559 N push force at 0.5 MPa over the 524 mm travel distance.
Component Ejection
Ejects machined metal parts from a fixture, relying on the 30 mm adjustable air cushions to decelerate the rod smoothly at stroke end.
Replacing the Airtac SI63 Standard Cylinder SI63X524S with the SAI63X524S
To replace the SI63X524S, order the SAI63X524S. Confirm the ISO 15552 mounting accessory (LB, FA, CA, TC), the G3/8 port thread (PT/G/NPT) and the -S magnet. Sizing both ways: a 50 mm bore gives 982 N [email protected], while an 80 mm bore gives 2513 N. For the 524 mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder drifts without live air; for load holding use the SAIL lock, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X524S
- ✓ 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 SI63X524S FAQ
Yes, the SI63X524S is discontinued. The direct replacement is the SAI63X524S. It is dimensionally interchangeable per ISO 15552, keeping the same 63 mm bore, 524 mm stroke, G3/8 port and mounting interface.
The bore is 63 mm with 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 max of 318 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X524S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X524S replacement — usually within 7-8 hours.