This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1670S, 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 SI63X1670S
The AirTAC Airtac SI63 Standard Cylinder SI63X1670S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1670mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X1670S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke1670 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X1670S
- 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 SI63X1670S
The AirTAC SI63X1670S is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 1670mm stroke. Delivering 1559N push force at 0.5MPa via a G3/8 port, it is replaced direct by the SAI63X1670S. The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life, while keeping the exact interface and force.
This 1670mm length is non-standard (exceeding the 1500mm max) and requires external guides to prevent rod bending. The -S magnet works with legacy CS1-B/DS1-B sensors, and Viton H seals raise heat to 150C.
Airtac SI63 Standard Cylinder SI63X1670S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1670S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1670S |
| Bore size | Ø63 mm |
| Stroke | 1670 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 SAI63X1670S 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 SAI63X1670S 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 SI63X1670S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1670 | 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 SI63X1670S Is Used
Long-Stroke Material Transfer
Pushes workpieces between machining stations over a 1670mm span, utilizing the 1559N thrust at 0.5MPa to shift heavy pallets along an assembly line.
Automated Stacking Pusher
Actuates a 1.67-meter sweeping arm to clear stacked goods from a packaging zone, relying on external guides to prevent rod bending.
Replacing the Airtac SI63 Standard Cylinder SI63X1670S with the SAI63X1670S
To replace the SI63X1670S, order the SAI63X1670S to retain the identical ISO 15552 mounting interface, 63mm bore, 1670mm stroke, M16x1.5 thread, G3/8 port and magnet. Because 1670mm exceeds the 1500mm standard maximum, this is a made-to-order non-standard stroke; ensure external guides are used to manage side-load and rod bending over this long distance. If sizing down, a 50mm bore gives 982N push at 0.5MPa; if sizing up, an 80mm bore yields 2513N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding, or specify the SAIL or BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1670S
- ✓ 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 SI63X1670S FAQ
Yes, the SI63X1670S is discontinued. The direct replacement is the AirTAC SAI63X1670S. It is dimensionally interchangeable per ISO 15552, retaining the same 63mm bore, 1670mm stroke, G3/8 port, M16x1.5 thread and mounting fixtures.
The 63mm bore uses a G3/8 air port. Force output is 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. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1670S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1670S replacement — usually within 7-8 hours.