Airtac SAI63 Standard Cylinder SAI63X135
The AirTAC SAI63 Standard Cylinder SAI63X135 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
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About the Airtac SAI63 Standard Cylinder SAI63X135
The AirTAC SAI63X135 is a double-acting ISO 15552 profile cylinder engineered to deliver 1559 N of push force at 0.5 MPa. Its 135 mm stroke provides an optimal mid-range extension for medium-duty assembly and handling tasks. The extruded aluminum barrel design omits tie rods, ensuring a clean exterior that resists dust accumulation.
This specific configuration features a standard carbon steel piston rod and PT tapered port threads. For environments requiring position feedback, the barrel includes dual-sided sensor grooves compatible with CMSE or DMSE switches when a magnet is specified. You can also explore the SAID variant if your mechanism demands double-rod output stability.
Airtac SAI63 Standard Cylinder SAI63X135 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63X135 |
|---|---|
| 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 SAI63X135
| 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 SAI63X135 Is Used
Component Clamping
Provides 1559 N of push force at 0.5 MPa to secure medium-weight metal workpieces during CNC milling operations.
Package Diverting
Uses the 135 mm stroke to actuate routing gates on automated packaging lines, smoothly redirecting cartons.
Press Fit Assembly
Delivers consistent downward pressure to seat bearings or pins into housings without requiring a full hydraulic press.
Is the Airtac SAI63 Standard Cylinder SAI63X135 the Right Cylinder?
Selecting this 63 mm bore is ideal when a 50 mm bore (982 N at 0.5 MPa) lacks the necessary push strength, but an 80 mm bore (2513 N) would be physically oversized. The 135 mm stroke hits a sweet spot for standard transfer and clamping operations. Because it is a true ISO 15552 profile cylinder, it serves as a direct replacement matching the standardized mounting interface of other ISO 15552 cylinders. You should specify the PT port thread and match your mounting accessory (such as an LB foot or FA flange) accordingly.
Remember that the standard adjustable air cushions only decelerate the piston near the stroke ends; they do not lock the rod. If your machinery must hold a vertical load without continuous air pressure, you must integrate an external pilot-operated check valve or select the SAIL lock variant to prevent drift.
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 SAI63X135 FAQ
At 0.5 MPa operating pressure, 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 SAI63X135 is a genuine ISO 15552 profile cylinder, meaning its mounting dimensions are fully interchangeable with other standard ISO 15552 cylinders. You can swap it directly without altering your machine's mounting footprint.
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