This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X600H, 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 SI63X600H
The AirTAC Airtac SI63 Standard Cylinder SI63X600H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 600mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X600H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke600 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X600H
- 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 SI63X600H
The AirTAC SI63X600H is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 600mm stroke. It delivers 1559N push force at 0.5MPa via a G3/8 port. This high-temperature variant uses a Viton H seal, extending operation to 0-150C. The direct replacement is the SAI63X600H, matching the exact ISO 15552 mounting interface, bore, stroke, force and port size.
The SAI upgrade features a redesigned piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Without a magnet (-S), this SKU cannot accept a sensor.
Airtac SI63 Standard Cylinder SI63X600H Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X600H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X600H |
| Bore size | Ø63 mm |
| Stroke | 600 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 SAI63X600H 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 SAI63X600H 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 SI63X600H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×600 | 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 SI63X600H Is Used
High-Temperature Actuation
Drives mechanisms in hot environments up to 150C using the Viton H seal, suitable for drying ovens or heat-treat lines.
Long-Stroke Transfer
Pushes products along extended 600mm paths where a standard stroke falls short, requiring external guides to prevent rod bending.
Vertical Lift Gates
Lifts access doors or material stops up to 79kg safely, holding the load via external pilot check valves rather than air cushions.
Replacing the Airtac SI63 Standard Cylinder SI63X600H with the SAI63X600H
To replace the SI63X600H, order the SAI63X600H. Verify the ISO 15552 mounting fixture, 63mm bore, 600mm stroke, G3/8 port (PT/G/NPT thread) and Viton H high-temp seal. Because this lacks a magnet, it cannot take a CS1-B/DS1-B sensor; if position detection is needed, select an SAI63X600HS. For loads needing 2182N at 0.7MPa, the 63mm bore is ideal, but if pushing 2805N at 0.9MPa is required, consider the 80mm bore. At 600mm stroke, prevent rod bending by using an external guide to absorb side loads. A plain cylinder drifts on air loss; for load holding, use an external pilot check valve, rod lock, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X600H
- ✓ 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 SI63X600H FAQ
Yes, the SI63X600H is discontinued. The direct replacement is the SAI63X600H. It is dimensionally interchangeable per ISO 15552, matching the 63mm bore, 600mm stroke, G3/8 port, and mounting interface, so it fits existing fixtures directly.
The 63mm bore uses a G3/8 port. It generates 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. It operates at 30-800mm/s with a 30mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X600H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X600H replacement — usually within 7-8 hours.