This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X680SH, 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 SI63X680SH
The AirTAC Airtac SI63 Standard Cylinder SI63X680SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 680mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X680SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke680 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X680SH
- 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 SI63X680SH
The AirTAC SI63X680SH is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore, 680 mm stroke, and a G3/8 port. It delivers 1559 N push force at 0.5 MPa. The direct replacement is the SAI63X680SH, matching the interface, force, and stroke.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. The -H suffix denotes a Viton seal for 0-150 C heat.
Airtac SI63 Standard Cylinder SI63X680SH Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X680SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X680SH |
| Bore size | Ø63 mm |
| Stroke | 680 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 SAI63X680SH 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 SAI63X680SH 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 SI63X680SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×680 | 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 SI63X680SH Is Used
Long-Stroke Diversion
Pushes heavy pallets laterally across transfer lines using the full 680 mm travel and 1559 N thrust at 0.5 MPa.
High-Temperature Handling
Actuates oven doors or hot-end fixtures safely up to 150 C using the Viton H seal option.
Replacing the Airtac SI63 Standard Cylinder SI63X680SH with the SAI63X680SH
To replace the SI63X680SH, order the SAI63X680SH. Confirm the ISO 15552 mounting interface, G3/8 port, M16x1.5 rod thread, and the -S magnet for CS1-B/DS1-B sensors. The 680 mm stroke requires external guides to prevent rod bending under side loads. For load holding on air loss, note that cushions only decelerate; use an external pilot check valve or the SAIL/BSAI lock variants. Neighbouring bores: 50 mm gives 982 N [email protected], while 80 mm gives 2513 N.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X680SH
- ✓ 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 SI63X680SH FAQ
Yes, the SI63X680SH is discontinued. The direct replacement is the SAI63X680SH. It is dimensionally interchangeable per ISO 15552, retaining the same 63 mm bore, 680 mm stroke, G3/8 port, and mounting fixtures.
The G3/8 port bore 63 mm cylinder provides 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and a 318 kgf maximum at 1.0 MPa. The SAI replacement uses an upgraded two Y-shaped piston seal for lower start-up pressure.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X680SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X680SH replacement — usually within 7-8 hours.