This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X800H, 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 SI63X800H
The AirTAC Airtac SI63 Standard Cylinder SI63X800H 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 SAI63X800H, 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 → SAI63X800H
- 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 SI63X800H
The AirTAC SI63X800H is a discontinued double-acting ISO 15552 profile cylinder with an 800 mm stroke and a Viton H high-temperature seal (0 to 150 C). Generating 1559 N push at 0.5 MPa, it features a 63 mm bore, a G3/8 port, and a 20 mm rod. Because this SKU lacks a magnet, it cannot accept a position switch.
Order the direct replacement SAI63X800H: it shares the exact ISO 15552 mounting interface, output force, stroke, and port. The SAI upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure.
Airtac SI63 Standard Cylinder SI63X800H Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X800H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X800H |
| 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 SAI63X800H 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 SAI63X800H 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 SI63X800H
| 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 SI63X800H Is Used
High-Temperature Ejection
Uses the Viton H seal to push parts out of hot zones up to 150 C, relying on the 1559 N force at 0.5 MPa to clear heavy molded components reliably.
Long-Stroke Transfer
Moves pallets 800 mm between stations with a 79 kg vertical lift capacity, requiring external guide rails to prevent side-load damage on the extended rod.
Heavy Part Diverting
Diverts heavy workpieces across a wide span, where the direct SAI replacement maintains the exact ISO 15552 dimensions and G3/8 port for existing fixtures.
Replacing the Airtac SI63 Standard Cylinder SI63X800H with the SAI63X800H
To replace the SI63X800H, order the SAI63X800H. Confirm the ISO 15552 mounting accessory (LB, FA, CA, TC), the G3/8 port thread (PT/G/NPT), and the Viton H seal for high-heat environments. This SKU has no magnet, so it cannot support CS1-B/DS1-B sensors; if sensing is needed, specify an SAI model with the S suffix. Sizing both ways: the 63 mm bore yields 1559 N push at 0.5 MPa, while the neighbouring 80 mm bore provides 2513 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use a pilot check valve or the SAIL/BSAI lock variant to hold loads. Finally, at 800 mm, prevent rod bending by guiding the load externally.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X800H
- ✓ 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 SI63X800H FAQ
Yes, the SI63X800H is discontinued. The direct replacement is the SAI63X800H. It shares the identical ISO 15552 mounting interface, 63 mm bore, 800 mm stroke, force, and G3/8 port, fitting directly into existing fixtures.
The 63 mm bore features a G3/8 port. 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 max of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X800H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X800H replacement — usually within 7-8 hours.