Airtac SAI63 Standard Cylinder SAI63BX35
The AirTAC Airtac SAI63 Standard Cylinder SAI63BX35 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 35mm 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
- Stroke35 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 SAI63BX35
The AirTAC SAI63X35 is a double-acting ISO 15552 profile cylinder engineered for short-stroke automation. It delivers a push force of 1559 N and a pull force of 1402 N at 0.5 MPa, making it a robust choice for compact actuation. The 35 mm stroke excels in rapid clamping and positioning tasks where space is restricted.
This variant is configured with a SUS304 stainless steel rod for superior corrosion resistance and utilizes PT tapered port threads. The extruded aluminum barrel features sensor grooves on both sides, allowing easy mounting of CMSE or DMSE switches if a magnet is added later. It is a direct replacement for any ISO 15552 dimensionally equivalent cylinder.
Airtac SAI63 Standard Cylinder SAI63BX35 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63BX35 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 35 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 SAI63BX35
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×35 | 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 SAI63BX35 Is Used
Compact Part Clamping
Provides 1559 N of clamping force at 0.5 MPa for securing heavy machined components during milling or drilling operations.
Short-Stroke Diverter
Actuates a diverter gate on a packaging line with a fast 35 mm stroke, moving products between parallel conveyor belts.
Press Ejection
Ejects formed metal parts from a press die, utilizing the 1402 N pull force to retract the mechanism quickly.
Is the Airtac SAI63 Standard Cylinder SAI63BX35 the Right Cylinder?
Select this 63 mm bore when a 50 mm bore (982 N at 0.5 MPa) lacks the thrust for your cycle, but an 80 mm bore (2513 N) would be physically oversized. The 35 mm stroke is optimal for short, high-force movements. Because the stroke is well under 300 mm, side-load stress on the rod bearing is minimal. Note that the standard SAI does not hold loads without constant air pressure; if your system requires fail-safe holding, consider the SAIL lock or BSAI clamp-lock variants. For an ISO 15552 replacement match, verify the 200 mm stroke, G3/8 port, and mounting accessory type.
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 SAI63BX35 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder generates a push force of 1559 N and a pull force of 1402 N. At 0.7 MPa, the push force increases to 2182 N.
No, the standard SAI cylinder does not hold position without live air pressure. The adjustable air cushion only decelerates the piston at stroke end. For fail-safe load holding, use the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variants.
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