Bearings are basic parts, and bearings are standard parts. Any mechanical equipment that needs to be rotated needs bearings, supports, and bearings in mechanical equipment to prevent friction and bear loads. Bearings are generally divided into rolling bearings and sliding bearings. At present, Sliding bearings have been gradually eliminated, but they still have their uses. As rolling bearings that are more and more widely used today, the commonly used rolling elements are: balls, short cylindrical rollers, tapered rollers, drum rollers and rollers. Needle and other five. We are all classified by rolling bearings!
(1) According to the shape of the rolling elements, bearings can be divided into two types: ball bearings and roller bearings.
The rolling elements of the Ball Bearing and the raceway of the ferrule are in point contact, with low load capacity and poor impact resistance, but small frictional resistance, high limit speed and low price.
The rolling element of the Roller Bearing is in line contact with the raceway of the ring, which has high load capacity and impact resistance, but has large frictional resistance and high price.
(2) According to the number of rows of rolling elements, bearings can be divided into single-row, double-row and multi-row bearings.
(3) Bearings can be divided into rigid bearings and self-aligning bearings according to whether they can be self-aligned during work.
Rolling bearing classification code
"1"----Self-aligning ball bearing
"2"----Spherical Roller Bearings and Thrust Spherical Roller Bearings
"3"----Tapered roller bearing
"5"----thrust ball bearing
"6"----Deep Groove Ball Bearing
"9"----Thrust Tapered Roller Bearing
"N"----cylindrical roller bearings and needle roller bearings are usually followed by one or more letter codes to indicate those rib structure types, such as: NJ, NU, NUP, etc. Wait. For double-row or multi-row cylindrical roller bearings, it is represented by the letter NN. Needle roller bearings are usually represented by the letters NA or NK.
"U"----Outer Spherical Ball Bearing
"QJ"----Four-point contact ball bearing
Welcome contact for more inquiry:
1.Deep Groove Ball Bearing
2. Wheel Hub Bearing
3.Cylindrical Roller Bearing
4.Spherical Roller Bearing
5.Angular Contact Ball Bearing
6.Tapered Roller Bearing
7. Auto Engine Valve
8.Auto Parts Piston and Ring
9. Pillow Block Bearing
10.SKF Deep Groove Ball Bearing
11.Auto Parts Timing Chain Kits
12. Nsk Ball Bearing
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