This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X800SH, 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 SI63X800SH
The AirTAC Airtac SI63 Standard Cylinder SI63X800SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 800mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X800SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X800SH
- 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 SI63X800SH
The AirTAC SI63X800SH is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 800mm stroke. Delivering 1559N push force at 0.5MPa, it is replaced by the SAI63X800SH. This direct upgrade shares the exact ISO 15552 mounting interface, G3/8 port, and M16x1.5 rod thread. The SAI features an upgraded piston seal with two Y-shaped elements for low start-up pressure and long life. It also includes the -H Viton seal for 0-150C high-temp environments.
The -S magnet supports legacy CS1-B/DS1-B sensors. Note that an 800mm stroke requires external guides to prevent rod bending, and a plain cylinder will drift on air loss—use a SAIL lock variant or pilot check valve for load holding.
Airtac SI63 Standard Cylinder SI63X800SH Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X800SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X800SH |
| Bore size | Ø63 mm |
| Stroke | 800 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 SAI63X800SH 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 SAI63X800SH 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 SI63X800SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×800 | 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 SI63X800SH Is Used
Long-Stroke Diversion
Pushes heavy pallets 800mm across a transfer line, utilizing the 1559N push force at 0.5MPa with external guides to absorb side loads.
High-Temp Ejection
Ejects molded parts from a warm zone using the Viton H seal rated for 0-150C, relying on the 1402N pull force at 0.5MPa.
Replacing the Airtac SI63 Standard Cylinder SI63X800SH with the SAI63X800SH
To replace the SI63X800SH, order the SAI63X800SH. Verify the ISO 15552 mounting interface, 63mm bore, 800mm stroke, G3/8 port, and -S magnet for current AirTAC switches. The -H Viton seal handles 0-150C heat. Sizing down, a 50mm bore gives 982N push @0.5MPa; sizing up, an 80mm bore yields 2513N. At 800mm stroke, use external guides to prevent rod-bending side loads. For load holding on air loss, the cushion only decelerates; add a SAIL air-released lock, BSAI clamp-lock, or external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X800SH
- ✓ 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 SI63X800SH FAQ
Yes, the SI63X800SH is discontinued. The direct replacement is the SAI63X800SH. It is dimensionally interchangeable per ISO 15552, retaining the same 63mm bore, 800mm stroke, 1559N force, G3/8 port, and mounting interface. The SAI upgrades the piston seal to two Y-shaped elements for lower start-up pressure.
The 63mm bore features a G3/8 port and M16x1.5 rod thread. Force output is 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N push at 0.9MPa, and a theoretical max of 318kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X800SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X800SH replacement — usually within 7-8 hours.