Airtac SAI63 Standard Cylinder SAI63BX70S
The AirTAC Airtac SAI63 Standard Cylinder SAI63BX70S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 70mm 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
- Stroke70 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 SAI63BX70S
The AirTAC SAI63X70-S is a double-acting ISO 15552 profile cylinder engineered for direct compatibility with standard mounting interfaces. Delivering a robust 1559 N of push force at 0.5 MPa, this 63 mm bore unit is tailored for short-stroke actuation. The 70 mm stroke provides rapid, compact movement in confined machinery envelopes.
This specific configuration includes a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in humid or washdown environments. It also features an integrated magnet (-S) embedded in the piston, allowing seamless operation with CMSE and DMSE series magnetic reed switches mounted directly into the dual sensor grooves on the extruded aluminum barrel.
Airtac SAI63 Standard Cylinder SAI63BX70S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63BX70S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 70 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 SAI63BX70S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×70 | 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 SAI63BX70S Is Used
Short-Stroke Clamping
Provides reliable 1559 N clamping force for holding heavy metal castings during CNC machining operations.
Package Diverting
Drives compact diverters on packaging lines where a 70 mm stroke rapidly pushes products into sorting lanes.
Press Fit Assembly
Applies steady downward pressure to seat bearings or pins into housings without requiring a full hydraulic press.
Is the Airtac SAI63 Standard Cylinder SAI63BX70S the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore (982 N at 0.5 MPa) lacks the necessary thrust for moving heavier jigs or workpieces. If your assembly requires even greater power, stepping up to an 80 mm bore yields 2513 N. Because the stroke is only 70 mm, side-load stress on the rod bearing is minimal, making it ideal for high-speed cycling.
When mapping out your ISO 15552 interchangeable replacement, verify the 70 mm stroke, PT tapered G3/8 port, and your required mounting accessory. For applications that must freeze a load mid-stroke without sustained air pressure, note that the standard adjustable air cushions only decelerate the piston near stroke ends; a SAIL variant with an air-released lock or an external check valve is required for true position holding.
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 SAI63BX70S FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder generates 1559 N of push force and 1402 N of pull force.
Yes, the SAI63X70-S is dimensionally interchangeable per ISO 15552. Ensure your existing setup matches the G3/8 port, 70 mm stroke, and your chosen mounting accessories.
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