30209 J2/Q Taper Roller Bearings

30209 J2/Q bearings, a type of tapered roller metric 3000 series.

J2/Q is used by Swedish bearings to denote the optimisation of retainers and raceways in tapered roller bearings.

Name	30209 bearings	Outer Ring	30209
Item Number	30209/7209	Inner Diameter	45mm
Series	Tapered roller Metric 3000 series	Outer Diameter	85mm
Inner Ring	30209	Width	20.750 mm

30209 bearings are made up of five parts, inner ring, outer ring, rollers, cage and seals, of which the inner ring and outer ring are cylinderical, the rollers are of uniform length and cylinderical, with some tapered angles on the outside. The cage keeps the rollers in an equidistand and orthogonal direction and helps to separate the rollers to prevent them from colliding, the seal is used to avoid deterioration of the lubricating oil or grease inside the spindle and to prevent dust from entering the barings.

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