This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1750S, 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 SI63X1750S
The AirTAC Airtac SI63 Standard Cylinder SI63X1750S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1750mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X1750S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke1750 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X1750S
- 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 SI63X1750S
The AirTAC SI63X1750S is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 1750mm stroke. Delivering 1559N push force at 0.5MPa via a G3/8 port, it is replaced by the SAI63X1750S. This direct successor matches the exact interface, stroke and force, utilizing an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure.
Because 1750mm exceeds the 1500mm standard maximum, this is a non-standard made-to-order stroke requiring external guides to prevent rod bending. The -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI family introduces SAIL lock and BSAI clamp-lock variants absent in the SI line.
Airtac SI63 Standard Cylinder SI63X1750S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1750S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1750S |
| Bore size | Ø63 mm |
| Stroke | 1750 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 SAI63X1750S 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 SAI63X1750S 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 SI63X1750S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1750 | 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 SI63X1750S Is Used
Long-Stroke Transfer
Pushes workpieces between machining stations over a 1750mm span, requiring external guide rails to prevent rod deflection.
High-Bay Extraction
Extracts totes from deep racking where the 1559N push force at 0.5MPa handles loads up to a 79kg vertical lift margin.
Elevated Lowering
Lowers heavy assemblies using adjustable 30mm air cushions, needing a pilot check valve to prevent drifting drops.
Replacing the Airtac SI63 Standard Cylinder SI63X1750S with the SAI63X1750S
To replace the SI63X1750S, order the SAI63X1750S, confirming the ISO 15552 mounting interface, G3/8 port, M16x1.5 rod thread, and -S magnet for current AirTAC switches. This 1750mm configuration is non-standard (exceeding the 1500mm max) and demands external guides to manage side-load and rod-bending risks. If sizing down, a 50mm bore yields 982N push at 0.5MPa; sizing up to 80mm provides 2513N. Note that plain cylinders drift without live air—the cushion only decelerates—so use a pilot check valve or the SAIL/BSAI lock variant for load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1750S
- ✓ 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 SI63X1750S FAQ
Yes, the SI63X1750S is discontinued. The direct replacement is the SAI63X1750S, which shares the same ISO 15552 mounting interface, 63mm bore, 1750mm stroke, G3/8 port and output force.
It features a G3/8 air port and provides 1559N push / 1402N pull at 0.5MPa, 2182N push at 0.7MPa, and a theoretical max of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1750S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1750S replacement — usually within 7-8 hours.