This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X500H, 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 SI63X500H
The AirTAC Airtac SI63 Standard Cylinder SI63X500H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 500mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X500H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X500H
- 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 SI63X500H
The AirTAC SI63X500H is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 500mm stroke. It delivers 1559N push force at 0.5MPa via a G3/8 port. The direct replacement is the SAI63X500H, matching the interface, force, and stroke.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure. This SKU lacks a magnet (-S) and cannot take a sensor. The H designation specifies a Viton seal for 0-150C.
Airtac SI63 Standard Cylinder SI63X500H Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X500H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X500H |
| Bore size | Ø63 mm |
| Stroke | 500 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 SAI63X500H 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 SAI63X500H 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 SI63X500H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×500 | 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 SI63X500H Is Used
Long-Stroke Diversion
Pushes heavy pallets sideways across a 500mm gap using the 1559N push force at 0.5 MPa, requiring external guides to prevent rod bending.
High-Temp Pressing
Applies 2182N clamping force at 0.7 MPa in a hot end-of-line assembly station, relying on the Viton H seal for 0-150 C endurance.
Elevator Gate Control
Actuates heavy industrial safety gates over the full 500mm travel, moving loads safely under the 79kg vertical lift limit.
Replacing the Airtac SI63 Standard Cylinder SI63X500H with the SAI63X500H
To replace the SI63X500H, order the SAI63X500H. Verify the ISO 15552 mounting interface, 500mm stroke, and G3/8 port. This non-magnet SKU cannot accept CS1-B/DS1-B sensors. For 500mm strokes, use external guides to prevent rod bending and side-load wear. If downsizing, a 50mm bore yields 982N push at 0.5MPa; if upsizing, an 80mm bore yields 2513N. Air cushions only decelerate; for load holding on air loss, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X500H
- ✓ 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 SI63X500H FAQ
Yes, the SI63X500H is discontinued. The direct replacement is the SAI63X500H. It is dimensionally interchangeable per ISO 15552, keeping the same 63mm bore, 500mm stroke, G3/8 port, and mounting interface.
This double-acting cylinder uses a G3/8 port. It delivers 1559N push and 1402N pull at 0.5 MPa, 2182N push at 0.7 MPa, 2805N 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 SAI63X500H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X500H replacement — usually within 7-8 hours.