6801-2Z Bearing 12x21x5mm

Bearing Type:Deep groove ball bearing
Inner Diameter:12mm
Outer diameter:21mm
Width:5mm
Weight :0.006kg

Dust cover iron seal deep groove ball bearings
  Size range and variety in form, used in precision instrument, low noise motors, automobiles, motorcycles and general machinery and other industries, is the most widely used type of bearings in machinery industry

Deep groove ball bearings mounted on a shaft, within the scope of the axial clearance of bearing, can limit shaft or the shell axial displacement in two directions, so can in two-way axial positioning. In addition, this class also has a certain bearing capacity, when compared with the shell hole '2 ~ 10', can still work normally, but had certain influence on bearing life.
  Deep groove ball bearing cage for stamping steel ribbon cage, and also can use engineering plastics, copper solid cage. Large bearing use car more metal solid cage. The use of sealed bearing internal according to different environment can be added the corresponding special bearing grease.
  Range of Sizes
  Inside diameter size range: 10 mm to 1320 mm
  Outside diameter size range: 30 mm ~ 1600 mm
  Scope: the width 9 mm to 300 mm
  Cage:
Deep groove ball bearings generally USES the steel plate stamping entities cage or brass cage. When diameter less than 400 mm, USES the steel plate stamping cage without post code, when the diameter is larger than 400 mm multi-purpose rear brass cage without entity code.
  Notice :
  Deep groove ball bearings, bearing load during operation is too small, can produce sliding between the ball and raceway, be the cause of the scratch. Especially the big ball and cage weight large deep groove ball bearings have this tendency. In use is expected to have the load is too small, when selecting a bearing should contact related people in time
  Operating Principle:
  Deep groove ball bearings mainly take radial load, also can bear radial load and axial load at the same time. When its only bear radial load, the contact Angle is zero. When deep groove ball bearings with larger radial clearance, with the performance of angular contact bearings, can withstand large axial load, deep groove ball bearing friction coefficient is small, the limit rotational speed is high.

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