Airtac SAI63 Standard Cylinder SAI63AX140
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX140 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 140mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ63 mm
- Stroke140 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX140
The AirTAC SAI63X140 is a double-acting ISO 15552 profile cylinder engineered to deliver 1559 N of push force at 0.5 MPa. With a 140 mm stroke, it is perfectly sized for mid-range automation tasks requiring substantial thrust and consistent cycle speeds up to 800 mm/s.
This unit is configured with a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance in humid environments. It utilizes PT tapered port threads, and because it lacks the -S magnet suffix, it operates without integrated sensor tracks. For applications requiring end-of-stroke locking, the SAIL variant provides a dedicated mechanical brake.
Airtac SAI63 Standard Cylinder SAI63AX140 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX140 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 140 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 SAI63AX140
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×140 | 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 SAI63AX140 Is Used
Automated Clamping
Provides 1559 N of clamping force at 0.5 MPa to secure heavy metal workpieces during CNC machining operations.
Product Diversion
Uses the 140 mm stroke to push medium-weight packages off a main conveyor line at high cycling speeds.
Material Forming
Applies steady pneumatic pressure for light-duty stamping, bending, or press-fitting tasks on the assembly floor.
Is the Airtac SAI63 Standard Cylinder SAI63AX140 the Right Cylinder?
Selecting this 63 mm bore over a smaller 50 mm option provides a significant thrust upgrade, jumping from 982 N to 1559 N at 0.5 MPa. If your application requires less force, stepping down to the 50 mm bore saves physical envelope space. The 140 mm stroke keeps the rod fully supported without needing external guides.
As a standard double-acting cylinder, the SAI63X140 relies on continuous air pressure to maintain its position. If pneumatic supply is lost, the piston will drift; for critical load-holding safety, specify the SAIL (air-released lock) or BSAI (clamp-lock) variant. This model serves as a dimensionally interchangeable drop-in replacement per ISO 15552, matching standard mounting footprints, PT port locations, and accessory interfaces.
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 SAI63AX140 FAQ
At an operating pressure of 0.5 MPa, this 63 mm bore cylinder generates 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
Yes, the SAI63X140 is built to the ISO 15552 standard, making its mounting dimensions and PT port sizes fully interchangeable with other ISO 15552 profile cylinders.
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