Airtac SAI63 Standard Cylinder SAI63AX325S
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX325S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 325mm 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
- Stroke325 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX325S
The AirTAC SAI63X325-S is a double-acting ISO 15552 profile cylinder featuring a 63mm bore and 325mm stroke. It delivers a robust 1559N push force at 0.5 MPa, making it highly capable for mid-weight industrial handling. The extruded aluminum barrel design omits tie rods, providing a clean exterior that drops right into standardized ISO 15552 mounting footprints.
Configured with an -S magnet, this unit readily integrates with CMSE and DMSE reed switches seated in the dual sensor grooves machined into both sides of the barrel. The piston rod is built from SUS420J2 stainless steel (option A), offering superior corrosion resistance compared to standard carbon steel, which is ideal for humid or mildly chemically exposed workspaces.
Airtac SAI63 Standard Cylinder SAI63AX325S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX325S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 325 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 SAI63AX325S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×325 | 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 SAI63AX325S Is Used
Automated Clamping
Secures heavy metal workpieces on machining lines, utilizing the 1559N push force to hold components firmly during milling or drilling operations.
Pallet Diversion
Actuates heavy-duty pusher arms on packaging conveyors to redirect pallets or large cartons into secondary processing lanes over the 325mm travel.
Vertical Lifting Gates
Raises and lowers intermediate safety gates on automated storage retrieval systems, relying on the SUS420J2 rod for reliable performance in variable humidity.
Is the Airtac SAI63 Standard Cylinder SAI63AX325S the Right Cylinder?
At 0.5 MPa, this 63mm bore generates 1559N of push thrust; if your assembly requires less force, stepping down to a 50mm bore yields 982N. For longer travel demands like this 325mm stroke, side loads can induce severe rod-bearing bending. Utilizing an external guide rail or a dedicated guided cylinder is strongly recommended to prevent premature seal wear.
This configuration utilizes PT tapered port threading and a G3/8 air supply. Remember that standard adjustable air cushions only decelerate the piston at end-of-stroke and do not arrest downward drift; if the machine loses pressure, specify a SAIL locking variant or an external rod lock. Mounting accessories include FA flanges or TC trunnions depending on your pivot requirements.
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 SAI63AX325S FAQ
At a 0.5 MPa operating pressure, the SAI63X325-S generates a push force of 1559N and a pull force of 1402N. It can achieve up to 2182N push force at 0.7 MPa.
Yes, the SAI63X325-S is a genuine ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 standard cylinders of the same bore size.
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