Airtac SAI63 Standard Cylinder SAI63X20
The AirTAC SAI63 Standard Cylinder SAI63X20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 20mm 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
- Stroke20 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAI63 Standard Cylinder SAI63X20
The AirTAC SAI63X20 is a double-acting ISO 15552 profile cylinder engineered for short-stroke actuation. Delivering a push force of 1559 N at 0.5 MPa, this 63 mm bore unit handles compact ejection and clamping tasks efficiently. The extruded aluminum barrel design omits tie-rods, providing a clean exterior that simplifies mounting and sensor placement.
Equipped with adjustable air cushions at both ends, it manages piston deceleration effectively despite the 20 mm stroke. The standard configuration features a durable carbon steel piston rod and PT tapered port threads. For environments requiring position feedback, the barrel includes integrated sensor grooves on both sides, ready to accept CMSE or DMSE switches when a magnet is specified.
Airtac SAI63 Standard Cylinder SAI63X20 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63X20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 20 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 SAI63X20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×20 | 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 SAI63X20 Is Used
Short-Stroke Clamping
Provides robust 1559 N clamping force for holding heavy machined components securely in place during milling or drilling operations.
Part Ejection
Delivers rapid 20 mm ejection strokes to push finished metal parts out of a press fixture before the next cycle begins.
Spot Welding Fixtures
Actuates welding gun tips with precise short movements, ensuring proper electrode contact without overtravel.
Is the Airtac SAI63 Standard Cylinder SAI63X20 the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore (982 N at 0.5 MPa) lacks the necessary push strength for your tooling. The 20 mm stroke is optimal for brief, high-force movements where a longer travel distance would waste cycle time. Because this is a double-acting cylinder, it requires continuous air pressure to maintain its position; if pressure drops, the rod will drift. For applications needing static load holding upon air loss, consider the SAIL variant with an air-released lock or an external pilot check valve.
As a dimensionally interchangeable ISO 15552 cylinder, it serves as a direct replacement for other standard profile cylinders. To match existing plumbing, specify the G3/8 port and PT thread type. Mounting accessories include LB foot brackets, FA flanges, and TC trunnions, while adding the -S suffix enables magnetic positioning sensors.
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 SAI63X20 FAQ
At a 0.5 MPa operating pressure, this 63 mm bore cylinder generates a push force of 1559 N and a pull force of 1402 N. Increasing pressure to 0.7 MPa raises the push force to 2182 N.
Yes. The SAI63X20 is a true ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 standard cylinders. It serves as a direct replacement provided the 63 mm bore, 20 mm stroke, and G3/8 port match your existing mounting footprint.
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