Hoverboard parts miniature 60*85*25mm needle roller bearing NA4912 NA4911 NA4910 NA4909 NA4908 NA4907 NA4906 NA4905 NA4904

Needle roller bearing feature :the thinnest outer ring among rolling bearings, high load capacity, high maximum permissive load owing to the use of carefully selected special alloy steel plates, a surface-hardened cage with high resistance to wear, high limiting speed, and ease of mounting.

Needle roller bearings can be used for: automobile, electrical. (Home appliances, electric tools, fitness equipment, motors, medical devices, motorbikes, textile machines); Equipment, instrument, building machinery, rolling stock agricultural machinery and various specialized machineries.

 Size:

Product Description:

        A needle bearing is a roller bearing with a cylindrical roller that is thin and long relative to its diameter. This type of roller is called a needle roller. Despite the small cross-section, the bearing still has a high load bearing capacity, and the needle bearing is equipped with a thin and long roller (roller diameter D ≤ 5 mm, L / D ≥ 2.5, L is the roller length), so The radial structure is compact, its inner diameter size and load capacity are the same as other types of bearings, the outer diameter is the smallest, and it is especially suitable for support structures with limited radial mounting dimensions.