This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X580S, 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 SI63X580S
The AirTAC Airtac SI63 Standard Cylinder SI63X580S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 580mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X580S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke580 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X580S
- 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 SI63X580S
The AirTAC SI63X580S is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 580mm stroke. It delivers 1559 N push force at 0.5 MPa via a G3/8 port. AirTAC replaced this legacy unit with the SAI63X580S, a direct upgrade sharing the same interface, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI variants the SI lacked. For this magnet-equipped model (-S), legacy CS1-B/DS1-B sensors fit; the SAI uses current AirTAC switches.
Airtac SI63 Standard Cylinder SI63X580S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X580S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X580S |
| Bore size | Ø63 mm |
| Stroke | 580 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 SAI63X580S 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 SAI63X580S 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 SI63X580S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×580 | 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 SI63X580S Is Used
Material Diversion
Drives long-stroke diverter arms on packaging lines, utilizing the 1559 N push force to redirect heavy cartons reliably at high cycle rates.
Long-Reach Clamping
Actuates extended clamping arms across wide workpieces, requiring external guide support to mitigate rod bending over the 580mm extension.
Replacing the Airtac SI63 Standard Cylinder SI63X580S with the SAI63X580S
To replace the SI63X580S, order the SAI63X580S direct, confirming the ISO 15552 mounting interface, 580mm stroke, G3/8 port, and M16x1.5 rod thread. Retain your mounting accessory (LB, FA, TC, etc.) and the -S magnet for current AirTAC switches. For sizing, a 50mm bore yields 982 N push at 0.5 MPa, while an 80mm bore yields 2513 N. Note that 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. Because 580mm exceeds typical lengths, use an external guide to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X580S
- ✓ 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 SI63X580S FAQ
Yes, the SI63X580S is discontinued. The direct replacement is the AirTAC SAI63X580S. It is dimensionally interchangeable per ISO 15552, matching the 63mm bore, 580mm stroke, output force, G3/8 port, and mounting accessories.
The 63mm bore uses a G3/8 port. At 0.5 MPa it provides 1559 N push and 1402 N pull force. At 0.7 MPa push is 2182 N, and at 0.9 MPa it is 2805 N. The theoretical maximum force is 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X580S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X580S replacement — usually within 7-8 hours.