Airtac SAI63 Standard Cylinder SAI63BX650S
The AirTAC SAI63 Standard Cylinder SAI63BX650S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 650mm 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
- Stroke650 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 SAI63BX650S
The AirTAC SAI63X650-S is a double-acting ISO 15552 profile cylinder engineered for demanding linear motion tasks. Delivering a robust 1559 N of push force at 0.5 MPa, this 63 mm bore unit utilizes a 650 mm stroke to bridge the gap between mid-range and extended travel distances. The extruded aluminum barrel omits tie-rods, providing a clean exterior that drops directly into standardized ISO 15552 mounting footprints.
This specific configuration incorporates a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in humid or chemically exposed environments. Equipped with a factory-installed magnet (-S), the cylinder operates seamlessly with CMSE and DMSE reed switches seated in the dual-side sensor grooves. Fluid routing is handled by PT tapered G3/8 ports, while adjustable air cushions at both ends absorb kinetic energy at stroke completion.
Airtac SAI63 Standard Cylinder SAI63BX650S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63BX650S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 650 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 SAI63BX650S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×650 | 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 SAI63BX650S Is Used
Long-Stroke Clamping
Reaches across wide work envelopes to secure large steel fabrications during robotic welding, utilizing the 1559 N push force to hold parts rigidly against locators.
Pallet Diversion
Actuates diverter arms on high-throughput packaging lines, where the 650 mm stroke pushes heavy pallets onto secondary spur tracks without requiring multi-stage cylinders.
Vertical Material Lift
Raises totes or bins between conveyor tiers, relying on the SUS304 stainless rod to resist oxidation in damp washdown environments while CMSE sensors confirm top and bottom positions.
Is the Airtac SAI63 Standard Cylinder SAI63BX650S the Right Cylinder?
Selecting this 63 mm bore over the smaller 50 mm variant increases your thrust from 982 N to 1559 N at 0.5 MPa, providing a significant uplift for heavier payloads without stepping up to the bulkier 80 mm body. The 650 mm stroke falls well within the 1500 mm standard limit for this bore, making it an optimal choice for applications requiring long reach. However, at this travel distance, the unsupported piston rod is highly susceptible to bending under side loads. To prevent premature rod-bearing wear, integrate an external linear guide or utilize a guided cylinder carriage.
Because the SAI series relies on adjustable air cushions rather than mechanical locks, the rod will drift if air pressure is lost or the control valve is centered. If your workflow demands strict position holding during an emergency stop or pressure drop, specify the SAIL variant with an air-released locking mechanism, or pair this cylinder with an external pilot-operated check valve. For direct replacements, ensure the target system matches the 63 mm bore, 650 mm stroke, PT G3/8 porting, and your chosen mounting accessory (such as an LB foot or TC trunnion).
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 SAI63BX650S FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder generates 1559 N of push force and 1402 N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 2182 N.
Yes, the SAI63X650-S is dimensionally interchangeable per ISO 15552. You can drop it into existing mounts matching the 63 mm bore and 650 mm stroke, provided the G3/8 porting and accessory footprint align.
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