Airtac SAI63 Standard Cylinder SAI63BX425
The AirTAC SAI63 Standard Cylinder SAI63BX425 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 SAI63BX425
The AirTAC SAI63X425 is a double-acting ISO 15552 profile cylinder engineered to deliver 1559 N of push force at 0.5 MPa. Its 425 mm stroke makes it well-suited for automated machinery requiring extended linear travel. The extruded aluminum barrel design omits tie rods, presenting a clean exterior while maintaining robust structural integrity.
This specific configuration incorporates a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in humid or washdown environments. It features PT tapered port threads and lacks a standard magnet; if position sensing is required, a -S variant with dual side sensor grooves for CMSE or DMSE switches would be necessary.
Airtac SAI63 Standard Cylinder SAI63BX425 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63BX425 |
|---|---|
| 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 SAI63BX425
| 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 SAI63BX425 Is Used
Extended Transfer Lines
Provides the 1559 N force and 425 mm travel needed to push heavy pallets between adjacent conveyor sections in material handling systems.
Large Door Manipulation
Actuates heavy industrial machine guarding or processing doors, utilizing its SUS304 rod to withstand occasional splash or humid factory conditions.
Multi-Stage Assembly
Drives long-stroke pressing or component seating operations where the full 425 mm extension is required to reach across a wide workstation.
Is the Airtac SAI63 Standard Cylinder SAI63BX425 the Right Cylinder?
Selecting this 63 mm bore over the smaller 50 mm option provides a significant thrust upgrade, stepping up from 982 N to 1559 N at 0.5 MPa. If your application requires even greater force, the 80 mm bore offers 2513 N under the same pressure. Because the 425 mm stroke generates a long unsupported rod extension, evaluating side-load risks is critical to prevent premature rod-bearing wear; utilizing an external guide rail or a fully guided cylinder is highly recommended for rigid linear stability.
As a dimensionally interchangeable ISO 15552 cylinder, this model serves as a direct replacement for other ISO 15552 profile cylinders. To match this exact configuration, specify the 63 mm bore, 425 mm stroke, PT G3/8 port, appropriate mounting accessory (such as FA flange or TC trunnion), and the B rod material code. Note that a standard SAI relies on continuous air pressure to hold position; if pneumatically unpowered load holding is needed, consider the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variants.
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 SAI63BX425 FAQ
At 0.5 MPa operating pressure, this 63 mm bore 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 SAI63X425 is a genuine AirTAC profile cylinder with standardized ISO 15552 mounting dimensions, making it dimensionally interchangeable with other ISO 15552 cylinders. Ensure your setup matches the G3/8 port and 425 mm stroke requirements.
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