This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1730S, 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 SI63X1730S
The AirTAC Airtac SI63 Standard Cylinder SI63X1730S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1730mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X1730S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke1730 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X1730S
- 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 SI63X1730S
The AirTAC SI63X1730S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore, delivering 1559 N push force at 0.5 MPa. Because this 1730 mm stroke exceeds the 1500 mm standard maximum, it was produced as a non-standard, made-to-order unit. AirTAC replaced this EOL series with the SAI63X1730S, a direct sharing the exact interface, G3/8 port, and output. The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure, and adds SAIL, SAIF, and BSAI variants the SI lacked.
The original -S magnet supports CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches. Note that a plain cylinder drifts without live air; use a SAIL lock or external check valve to hold loads.
Airtac SI63 Standard Cylinder SI63X1730S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1730S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1730S |
| Bore size | Ø63 mm |
| Stroke | 1730 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 SAI63X1730S 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 SAI63X1730S 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 SI63X1730S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1730 | 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 SI63X1730S Is Used
Long-Stroke Material Transfer
Drives heavy pallets across extended conveyor sections where the 1559 N push force handles substantial payloads over the full 1730 mm travel.
High-Bay Pusher Arm
Actuates storage diverter arms deep into racking aisles, requiring the long stroke and guided external supports to prevent rod deflection.
Extended Lowering Station
Lowers packaging materials from elevated hoppers, utilizing the 79 kg vertical lift capacity while requiring a pilot check valve for safety.
Replacing the Airtac SI63 Standard Cylinder SI63X1730S with the SAI63X1730S
To replace the SI63X1730S, order the SAI63X1730S, confirming the ISO 15552 mounting interface, 63 mm bore, 1730 mm made-to-order stroke, G3/8 port, and -S magnet. If you need less force, the 50 mm bore yields 982 N push at 0.5 MPa; for more power, the 80 mm bore provides 2513 N. Because 1730 mm exceeds the 1500 mm standard stroke, ensure external guides are used to prevent rod bending and side-load damage. A standard cylinder does not hold load without air; for secure holding, select the SAIL or BSAI lock variant, or add a pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1730S
- ✓ 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 SI63X1730S FAQ
Yes, the SI63X1730S is discontinued. The direct replacement is the AirTAC SAI63X1730S. It shares the identical ISO 15552 mounting interface, 63 mm bore, 1730 mm stroke, G3/8 port, and output force, fitting directly into existing fixtures.
The 63 mm bore features a G3/8 air 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 maximum of 318 kgf at 1.0 MPa. The 1730 mm stroke is non-standard and made-to-order.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1730S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1730S replacement — usually within 7-8 hours.