This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX500SH, 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 SI63AX500SH
The AirTAC SI63 Standard Cylinder SI63AX500SH 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 SAI63AX500SH, 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 → SAI63AX500SH
- 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 SI63AX500SH
The AirTAC SI63AX500SH is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 500mm stroke. Delivering 1559N push force at 0.5MPa, it features a SUS420J2 stainless rod, high-temp Viton H seals and a G3/8 port. AirTAC replaced this unit with the SAI63AX500SH direct replacement, matching the exact ISO 15552 mounting interface, bore, stroke, force and accessories.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SI line lacked the SAIL air-released lock, SAIF built-in valve and BSAI clamp-lock variants now available.
Airtac SI63 Standard Cylinder SI63AX500SH Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX500SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX500SH |
| 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 SAI63AX500SH 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 SAI63AX500SH 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 SI63AX500SH
| 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 SI63AX500SH Is Used
High-Temp Component Ejection
Uses the Viton H seal and SUS420J2 rod to reliably push parts out of heated molding zones up to 150C without seal degradation.
Long-Stroke Diverting
The 500mm stroke provides the extended reach needed to reroute large pallets or heavy workpieces across wide conveyor belts.
Replacing the Airtac SI63 Standard Cylinder SI63AX500SH with the SAI63AX500SH
To replace the SI63AX500SH, order the SAI63AX500SH direct. Verify the ISO 15552 mounting interface, 63mm bore, 500mm stroke, G3/8 port (PT/G/NPT thread), M16x1.5 rod thread, and the LB/FA/CA/TC mounting accessory. The -S magnet works with CS1-B/DS1-B switches, while the SAI uses current AirTAC switches. The -A rod is SUS420J2 stainless and -H is Viton for 0-150C. If sizing up or down, check the 50mm (982N) or 80mm (2513N) bores at 0.5MPa. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. At 500mm stroke, prevent rod bending by using an external guide to handle side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX500SH
- ✓ 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 SI63AX500SH FAQ
Yes, the SI63AX500SH is discontinued. The direct replacement is the SAI63AX500SH. It shares the identical ISO 15552 mounting interface, 63mm bore, 500mm stroke, output force, G3/8 port and mounting accessories, fitting directly into existing fixtures.
The G3/8 port bore delivers a push force of 1559N and pull of 1402N at 0.5MPa. At 0.7MPa push is 2182N, and at 0.9MPa it is 2805N. The theoretical maximum force is 318kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63AX500SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX500SH replacement — usually within 7-8 hours.