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6903-2RS Bearing 17x30x7mm
Bearing Type:Deep groove ball bearing
Inner Diameter:17mm
Outer diameter:30mm
Width:7mm
Weight :0.018kg
Dust cover glue sealing deep groove ball bearings
Feature:The rolling element and raceway in suitable surface separation and made by the rolling element and raceway deformation under load caused by the resistance to a minimum extent Make the raceway and roller sliding friction between the retainer to a minimum
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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