Airtac SAI63 Standard Cylinder SAI63BX20S
The AirTAC Airtac SAI63 Standard Cylinder SAI63BX20S 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 SAI63BX20S
The AirTAC SAI63X20-S is a double-acting ISO 15552 profile cylinder engineered for short-stroke actuation. It delivers a push force of 1559 N at 0.5 MPa, making it highly effective for compact, high-impact operations. The 20 mm stroke provides rapid extension and retraction within tight machinery envelopes.
This specific configuration features a SUS304 stainless steel rod (material code B) for superior corrosion resistance in wet or washdown environments. It includes a magnetic piston (-S) enabling seamless integration with CMSE or DMSE reed sensors via the dual sensor grooves machined into the extruded aluminum barrel. Fluid ports are PT tapered threads.
Airtac SAI63 Standard Cylinder SAI63BX20S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63BX20S |
|---|---|
| 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 SAI63BX20S
| 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 SAI63BX20S Is Used
Short-Stroke Pressing
Ideal for applying 1559 N of pressing force in compact assembly jigs where a 20 mm stroke is sufficient to seat bearings or pins without consuming excessive longitudinal space.
Part Ejection
Provides rapid, high-force ejection of machined parts from a conveyor line, utilizing the 30-800 mm/s speed range to maintain high cycle rates.
Washdown Clamping
The SUS304 stainless steel rod ensures reliable operation in food or pharmaceutical clamping stations where moisture and frequent washdowns would degrade standard carbon steel rods.
Is the Airtac SAI63 Standard Cylinder SAI63BX20S the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore (982 N at 0.5 MPa) lacks the necessary thrust, but an 80 mm bore (2513 N at 0.5 MPa) is physically too large for the machine envelope. The 20 mm stroke is optimal for clamping, ejecting, or pressing tasks that require full force in a minimal footprint.
Because the standard SAI does not hold its position upon loss of air pressure, a separate external rod lock or pilot-operated check valve is required if the load must remain safely suspended during a pneumatic failure. This model is dimensionally interchangeable per ISO 15552, serving as a direct replacement for other ISO 15552 profile cylinders with a 63 mm bore, 20 mm stroke, G3/8 port, and standard mounting accessories.
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 SAI63BX20S FAQ
At an operating pressure of 0.5 MPa, this double-acting cylinder provides a push (extend) force of 1559 N and a pull (retract) force of 1402 N. The maximum theoretical force at 1.0 MPa is 318 kgf.
Yes, the SAI63X20-S is a genuine ISO 15552 profile cylinder. Its standardized mounting interface and center-to-center dimensions make it a direct replacement for other ISO 15552 cylinders of the same bore and stroke, utilizing a G3/8 port and standard mounting accessories.
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1-Year Warranty
Covers non-human-caused product damage.
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