Airtac SAI63 Standard Cylinder SAI63AX300
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX300 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 300mm 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
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX300
The AirTAC SAI63X300 is a double-acting ISO 15552 profile cylinder engineered to deliver a push force of 1559 N and a pull force of 1402 N at 0.5 MPa. Its extruded aluminum barrel design omits tie-rods, providing a clean exterior that drops directly into standardized ISO 15552 mounting interfaces.
This specific configuration incorporates a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. 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 mechanical air-released brake.
Airtac SAI63 Standard Cylinder SAI63AX300 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX300 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 300 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 SAI63AX300
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×300 | 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 SAI63AX300 Is Used
Automated Clamping
Provides 1559 N of clamping force at 0.5 MPa to secure medium-sized metal castings during CNC machining operations.
Package Diverting
Extends 300 mm to push heavy cardboard cartons from a main conveyor line onto secondary packaging lanes.
Material Ejection
Cycles rapidly within the 30-800 mm/s speed range to eject molded plastic parts from press dies.
Is the Airtac SAI63 Standard Cylinder SAI63AX300 the Right Cylinder?
Selecting this 63 mm bore over a 50 mm bore steps the push force up from 982 N to 1559 N at 0.5 MPa, whereas stepping up to an 80 mm bore yields 2513 N. The 300 mm stroke falls well within the 1500 mm maximum standard stroke for this bore, but at this length the unsupported rod is susceptible to bending under side loads. Implement an external guide rail or choose a guided cylinder to prevent premature rod-bearing wear.
To match this cylinder exactly for a replacement, specify the 63 mm bore, 300 mm stroke, G3/8 PT ports, and your required mounting accessory like an FA flange or TC trunnion. Remember that standard double-acting cylinders drift if air pressure is lost; the air cushions only decelerate the piston at stroke ends and will not hold a suspended load in a power-off state.
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 SAI63AX300 FAQ
At 0.5 MPa, this cylinder provides 1559 N of push force and 1402 N of pull force. If you increase the operating pressure to 0.7 MPa, the push force rises to 2182 N.
Yes, the SAI63X300 is dimensionally interchangeable per ISO 15552. You can use it as a drop-in replacement for other ISO 15552 profile cylinders with a 63 mm bore and 300 mm stroke, provided you match the PT port and mounting hardware.
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