Airtac SAI63 Standard Cylinder SAI63AX250S
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX250S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 250mm 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
- Stroke250 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX250S
The AirTAC SAI63X250-S is a double-acting ISO 15552 profile cylinder engineered to deliver 1559 N of push force at 0.5 MPa. Its 250 mm stroke provides the extended travel needed for mid-distance material handling and automated assembly tasks. As a genuine AirTAC component, it ensures seamless dimensional interchangeability with other ISO 15552 cylinders.
This specific configuration includes a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance in humid environments. Equipped with a built-in magnet (-S), it directly supports CMSE and DMSE sensor switches mounted into the dual-side extruded aluminum barrel grooves. The cylinder uses PT tapered port threads and adjustable air cushions at both ends to smooth out piston deceleration.
Airtac SAI63 Standard Cylinder SAI63AX250S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX250S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 250 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 SAI63AX250S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×250 | 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 SAI63AX250S Is Used
Automated Assembly Press
Provides the precise 1559 N push force at 0.5 MPa required for seating bearings and riveting components on a 250 mm stroke assembly line.
Package Diverting Arm
Extends 250 mm to actuate a routing gate on a packaging conveyor, using the dual-side sensor grooves to confirm arm position.
Workpiece Clamping Fixture
Secures metal workpieces during machining operations, leveraging the SUS420J2 stainless steel rod to resist corrosion from cutting fluids.
Is the Airtac SAI63 Standard Cylinder SAI63AX250S the Right Cylinder?
Selecting this 63 mm bore over a smaller 50 mm option upgrades your thrust from 982 N to 1559 N at 0.5 MPa, while stepping up to an 80 mm bore yields 2513 N if your payload demands it. Because this model features a 250 mm stroke, you must account for potential rod-bearing bending under heavy side loads; utilizing an external guide rail or a guided cylinder carriage will prevent premature seal wear and piston drift.
For drop-in ISO 15552 replacements, match the exact 63 mm bore, 250 mm stroke, G3/8 PT port interface, and appropriate mounting accessory (such as an LB foot or TC trunnion). If your mechanism loses pneumatic pressure during operation, remember that the standard adjustable cushion only decelerates the piston at stroke end and does not act as a braking device; specify a SAIL variant or an external rod lock for secure load 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 SAI63AX250S 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 SAI63X250-S is a true ISO 15552 profile cylinder, making it dimensionally interchangeable with other standard ISO 15552 cylinders. Ensure your mounting interface, 250 mm stroke, and G3/8 PT ports align with your existing fixture.
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