6800 Series Bearing

1. Outer diameter and width: Compared to the 62/63 series with the same inner diameter, the outer diameter is larger and the width is wider, providing higher rigidity and load-bearing capacity.
-* * Deep groove * *: The inner and outer ring deep groove raceway design can withstand radial loads and bidirectional axial loads, but the axial bearing capacity is slightly lower than that of angular contact ball bearings.
-* * Compact * *: Some 68 series are ultra-thin designs (such as 688 series), suitable for scenarios with limited axial installation space.
2. Performance characteristics**
-High load-bearing capacity:
-Due to the increase in outer diameter and width, the radial load capacity is significantly higher than that of the 62/63 series with the same inner diameter, making it suitable for medium to heavy load conditions.
-The axial load capacity is about 20% to 30% of the radial load, and pure axial overload should be avoided.
-Speed adaptability:
-Due to the increase in size, the maximum speed is usually lower than the 62/63 series, but by optimizing lubrication and retaining frames (such as nylon retaining frames), it can be adapted to medium to high speed applications.
-Friction and Temperature Rise:
-An increase in contact area may result in slightly higher friction, and it is necessary to use high-quality lubricating grease (such as lithium based grease) to control temperature rise.
3. Application Fields**
-Heavy duty equipment: small stamping machines, agricultural machinery transmission shafts, conveyor belt rollers.
-* * Precision instruments * *: medical equipment, optical instruments (ultra-thin models required).
-Automotive components: electric vehicle motor spindle, transmission auxiliary bearings.
-Industrial Robots: Joint Parts