This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X830STC, 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 SI63X830STC
The AirTAC Airtac SI63 Standard Cylinder SI63X830STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 830mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X830STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke830 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X830STC
- 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 SI63X830STC
The AirTAC SI63X830STC is a discontinued double-acting ISO 15552 profile cylinder featuring an 830 mm stroke, G3/8 port, and a 1559 N push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAI63X830STC, a direct replacement matching the exact bore, stroke, output force, and TC trunnion mounting interface.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. For applications needing load holding, note the SAI family adds SAIL and BSAI lock variants the SI lacked.
Airtac SI63 Standard Cylinder SI63X830STC Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X830STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X830STC |
| Bore size | Ø63 mm |
| Stroke | 830 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 SAI63X830STC 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 SAI63X830STC 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 SI63X830STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×830 | 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 SI63X830STC Is Used
Long-Stroke Diversion
Pushes heavy pallets across transfer lines using the 830 mm stroke and 1559 N thrust at 0.5 MPa.
Large Assembly Press
Actuates large fixture clamps over wide spans, utilizing the TC trunnion mount for self-alignment.
Replacing the Airtac SI63 Standard Cylinder SI63X830STC with the SAI63X830STC
To replace the SI63X830STC, order the SAI63X830STC. Verify your ISO 15552 TC trunnion mounting hardware, the G3/8 air port, and the M16x1.5 rod thread. The -S magnet supports legacy CS1-B/DS1-B sensors, though the SAI replacement uses current AirTAC switches. If sizing up or down, neighboring bores are 50 mm (982 N push @0.5 MPa) and 80 mm (2513 N push @0.5 MPa). Because this is an 830 mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X830STC
- ✓ 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 SI63X830STC FAQ
Yes, the SI63X830STC is discontinued. The direct replacement is the SAI63X830STC. It is dimensionally interchangeable per ISO 15552, retaining the same 63 mm bore, 830 mm stroke, G3/8 port, and TC mounting interface.
This double-acting cylinder uses a G3/8 port. The force output is 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X830STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X830STC replacement — usually within 7-8 hours.