Airtac SAI63 Standard Cylinder SAI63BX425S
The AirTAC SAI63 Standard Cylinder SAI63BX425S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 425mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ63 mm
- Stroke425 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
- 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 SAI63 Standard Cylinder SAI63BX425S
The AirTAC SAI63X425-S is a double-acting ISO 15552 profile cylinder engineered for robust linear motion. Delivering a push force of 1559 N at 0.5 MPa, this 63mm bore unit is tailored for mid-weight automation tasks. The 425mm stroke provides ample extension for indexing, lifting, and clamping operations.
This specific configuration includes a SUS304 stainless steel rod (material code B) for superior corrosion resistance in humid or washdown environments. It is equipped with a piston magnet (-S) to trigger CMSE or DMSE sensor switches along the dual grooves machined into the extruded aluminum barrel. Fluid ports feature PT tapered threading.
Airtac SAI63 Standard Cylinder SAI63BX425S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63BX425S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 425 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, 36 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / 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 | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAI63 Standard Cylinder SAI63BX425S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×425 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAI63 Standard Cylinder SAI63BX425S Is Used
Packaging Indexing
Drives 425mm stroke pushers to advance film or cartons through sealing stations with reliable 1559 N force.
Pallet Transfer
Actuates diverter arms to route heavy pallets on packaging lines, utilizing the SUS304 rod in mildly corrosive settings.
Component Clamping
Secures aluminum castings during machining operations, using adjustable air cushions to decelerate the stroke smoothly.
Is the Airtac SAI63 Standard Cylinder SAI63BX425S the Right Cylinder?
Select this 63mm bore when a 50mm cylinder's 982 N push at 0.5 MPa is insufficient, but an 80mm bore (2513 N at 0.5 MPa) would be physically oversized. At 425mm of stroke, the unsupported rod length is susceptible to bending under side loads; utilize external guide rails or a guided cylinder to prevent premature rod-bearing wear.
This profile cylinder is dimensionally interchangeable per ISO 15552, serving as a direct replacement for other standard profile cylinders. To match this exact unit, specify the 63mm bore, 425mm stroke, G3/8 port, PT thread, and the -S magnet option. If the application requires holding a load without live air pressure, use the SAIL lock variant instead of relying on the adjustable air cushions.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAI63 Standard Cylinder SAI63BX425S FAQ
At 0.5 MPa operating pressure, this double-acting cylinder provides a push force of 1559 N and a pull force of 1402 N. At 0.7 MPa, the push force increases to 2182 N.
Yes. The SAI is a true ISO 15552 profile cylinder, making its mounting interface dimensionally interchangeable with other ISO 15552 cylinders. Ensure you match the 63mm bore, 425mm stroke, and G3/8 port size.
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