This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X800, 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 SI63X800
The AirTAC Airtac SI63 Standard Cylinder SI63X800 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 SAI63X800, 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 → SAI63X800
- 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 SI63X800
The AirTAC SI63X800 is a discontinued double-acting ISO 15552 profile cylinder with an 800 mm stroke, delivering 1559 N push force at 0.5 MPa through its G3/8 port. AirTAC replaced this legacy unit with the SAI63X800, a direct replacement retaining the exact bore, stroke, force, port, and ISO 15552 mounting interface.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet, meaning it cannot support CS1-B or DS1-B legacy sensors.
Airtac SI63 Standard Cylinder SI63X800 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X800 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X800 |
| 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 SAI63X800 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 SAI63X800 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 SI63X800
| 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 SI63X800 Is Used
Long-Stroke Material Transfer
Pushes heavy pallets along an assembly line using the 1559 N force and 800 mm travel distance.
Elevator Lowering Stage
Lowers intermediate work platforms with a safe vertical lift capacity of approximately 79 kg.
Automated Storage Retrieval
Actuates sliding trays in dense storage racks, requiring the full 800 mm extension to reach deep bins.
Replacing the Airtac SI63 Standard Cylinder SI63X800 with the SAI63X800
To replace the SI63X800, order the SAI63X800 and confirm your ISO 15552 mounting accessory (LB, FA, CA, TC), G3/8 port thread (PT/G/NPT), and M16x1.5 rod end. Since this SKU lacks the -S magnet, it cannot accept position sensors. If your application needs to hold the load on air loss, the standard cylinder will drift; use an external pilot check valve or the SAIL/BSAI lock variants. With an 800 mm stroke, prevent rod bending by adding external guides to absorb side loads. Sizing alternatives: a 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore provides 2513 N.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X800
- ✓ 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 SI63X800 FAQ
Yes, the SI63X800 is discontinued. The direct replacement is the SAI63X800, which maintains the same ISO 15552 mounting interface, 63 mm bore, 800 mm stroke, force, and G3/8 port. It fits directly into existing fixtures.
This double-acting cylinder features a G3/8 air port and M16x1.5 rod thread. It delivers 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N push at 0.9 MPa, and a theoretical maximum force of 318 kgf at 1.0 MPa.
Request a Quote for the SAI63X800
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X800 replacement — usually within 7-8 hours.