Airtac SAI63 Standard Cylinder SAI63BX135
The AirTAC Airtac SAI63 Standard Cylinder SAI63BX135 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 135mm 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
- Stroke135 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 SAI63BX135
The AirTAC SAI63X135 is a double-acting ISO 15552 profile cylinder engineered to deliver 1559 N of push force at 0.5 MPa. This specific 135 mm stroke length is highly versatile for mid-range automation tasks. The extruded aluminum barrel design omits traditional tie rods, providing a clean exterior that simplifies machine integration and sensor mounting.
Built for longevity in demanding environments, this configuration features a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance. The fluid porting utilizes PT tapered threads, and the adjustable air cushions at both stroke ends are tuned to decelerate loads effectively within the 30-800 mm/s speed range.
Airtac SAI63 Standard Cylinder SAI63BX135 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63BX135 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 135 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 SAI63BX135
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×135 | 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 SAI63BX135 Is Used
Automated Clamping
Provides robust 1559 N clamping force at 0.5 MPa for securing heavy metal workpieces during CNC milling operations.
Package Diverting
Actuates diverting gates on high-speed packaging lines, utilizing the 135 mm stroke to reroute products efficiently.
Material Ejection
Ejects molded parts from machinery, relying on the adjustable end cushions to absorb impact and protect the SUS304 rod.
Is the Airtac SAI63 Standard Cylinder SAI63BX135 the Right Cylinder?
This 63 mm bore generates 1559 N of thrust at 0.5 MPa, making it a strong upgrade if a 50 mm bore (982 N) is underpowered, yet more compact than an 80 mm bore (2513 N) when space is constrained. To achieve true ISO 15552 interchangeability during a retrofit, verify the 63 mm bore dimensions, 135 mm stroke, G3/8 port, and your preferred mounting accessory (such as FA flange or TC trunnion).
Because the stroke is 135 mm, side load is minimal, but you should still ensure proper alignment to prevent rod-bearing wear. Note that a standard SAI cylinder relies on continuous air pressure to hold position; if the load must remain suspended when air is exhausted, select the SAIL variant with an air-released lock or use an external pilot-operated check valve.
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 SAI63BX135 FAQ
At a 0.5 MPa operating pressure, this 63 mm bore double-acting cylinder generates 1559 N of push force and 1402 N of pull force.
Yes, the SAI63X135 is a genuine ISO 15552 profile cylinder with standardized mounting dimensions, making it a direct replacement for other ISO 15552 cylinders.
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