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6300 Series

Single-row deep groove ball bearings are a typical structural type among rolling bearings. The raceways on both the inner and outer rings are circular arcs, with a cross-sectional radius slightly larger than the ball radius. The 6300 series are medium-to-large standard types, featuring larger outer diameters and widths compared to the 6200 series, with significantly improved load-carrying capacity, making them suitable for medium and above load conditions. In addition to open types, bearings with steel shield plates or with snap rings on the outer diameter of the outer ring are also available. They generally use pressed steel cages. For large-sized bearings or those used in high-speed rotation, machined brass cages are adopted.

Features

  • Higher load-carrying capacity than the 6200 series, suitable for medium-load applications.
  • Outstanding radial load capacity, while also capable of supporting certain bidirectional axial loads.
  • Complete size series with a wide selection range.
  • Sealed types and snap-ring types accommodate different mounting requirements.
Application Examples
With low friction torque, they are ideal for medium-load, high-speed, and low-noise applications. Industrial motors, gearboxes, pump equipment, agricultural machinery (harvesters, seeders), woodworking machinery, conveyor belt rollers, blowers, air compressors, and more.

Model Overall dimensions Basic rated load Coefficient Weight
d D B r (min.) Cr C0r F₀ Mass
mm mm mm mm N N ⁿ/ₐ kg
6306N 30 72 19 1.1 26700 15000 13.3 0.345
6306-2RS 30 72 19 1.1 28000 15000 13.3 0.345
6305-2Z 25 62 17 1.1 21600 11200 13.2 0.235
6305-2RZ 25 62 17 1.1 21600 11200 13.2 0.235
6305NR 25 62 17 1.1 20600 11200 13.2 0.235
6305N 25 62 17 1.1 20600 11200 13.2 0.235
6305-2RS 25 62 17 1.1 21600 11200 13.2 0.235
6304-2Z 20 52 15 1.1 16700 7900 12.4 0.145
6304-2RZ 20 52 15 1.1 16700 7900 12.4 0.145
6304NR 20 52 15 1.1 15900 7900 12.4 0.145
6304N 20 52 15 1.1 15900 7900 12.4 0.145
6304-2RS 20 52 15 1.1 16700 7900 12.4 0.145
6303-2Z 17 47 14 1 14300 6650 12.4 0.113
6303-2RZ 17 47 14 1 14300 6650 12.4 0.113
6303NR 17 47 14 1 13600 6650 12.4 0.113
6303N 17 47 14 1 13600 6650 12.4 0.113
6303-2RS 17 47 14 1 13600 6650 12.4 0.113
6302-2Z 15 42 13 1 11400 5450 12.3 0.083
6302-2RZ 15 42 13 1 12000 5450 12.3 0.083
6302NR 15 42 13 1 11400 5450 12.3 0.083

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