This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1600, 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 SI63X1600
The AirTAC Airtac SI63 Standard Cylinder SI63X1600 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1600mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X1600, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke1600 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X1600
- 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 SI63X1600
The AirTAC SI63X1600 is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 1600mm stroke. Because 1600mm exceeds the 1500mm standard maximum for this bore, it was produced as a non-standard made-to-order item. It delivers 1559N push and 1402N pull at 0.5MPa via a G3/8 port. This legacy unit is replaced by the SAI63X1600.
The SAI63X1600 is a direct replacement sharing the exact ISO 15552 mounting interface, bore, stroke, output force, and port size. The upgrade introduces a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63X1600 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1600 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1600 |
| Bore size | Ø63 mm |
| Stroke | 1600 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 SAI63X1600 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 SAI63X1600 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 SI63X1600
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1600 | 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 SI63X1600 Is Used
Long-Stroke Transfer
Pushes workpieces between distant machining stations over 1600mm, relying on the 1559N thrust at 0.5MPa to move heavy jigs along the line.
High-Bay Ejection
Actuates long-travel ejection arms to push pallets from storage racks, utilizing the 63mm bore's 1402N pull force for safe retraction.
Material Lowering
Deposits components into deep bins using the full 1600mm travel, requiring external guides to prevent rod bending during the descent.
Replacing the Airtac SI63 Standard Cylinder SI63X1600 with the SAI63X1600
To replace the SI63X1600, order the SAI63X1600, confirming the ISO 15552 interface, 63mm bore, 1600mm non-standard stroke, G3/8 port, and M16x1.5 rod thread. Because this 1600mm stroke exceeds the 1500mm standard, ensure your external guide system adequately prevents rod bending and side-load damage. Sizing both ways: a neighboring 80mm bore offers 2513N push at 0.5MPa, while dropping to a 50mm bore yields 982N. This plain cylinder cannot hold a load without live air—the cushion only decelerates—so use an external pilot check valve or the SAIL/BSAI lock variants for secure holding. Since this SKU has no magnet, position sensing is impossible.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1600
- ✓ 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 SI63X1600 FAQ
Yes, the SI63X1600 is discontinued. The direct replacement is the SAI63X1600. It shares the identical ISO 15552 mounting interface, 63mm bore, 1600mm stroke, output force, and G3/8 port, fitting directly into existing fixtures.
It features a G3/8 air port and provides 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N push at 0.9MPa, and a theoretical maximum of 318kgf at 1.0MPa. The 1600mm stroke is a non-standard made-to-order length exceeding the 1500mm standard maximum.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1600
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1600 replacement — usually within 7-8 hours.