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Deep Groove Double Row Miniature ball bearing Electric Motor

. Double row bearing is designed since it's better than tandem 2pcs of single row bearing.

.Size: Inner Bore Diameter 4mm min., both with metric and Inch sizes .

.Series NOs.:  50/4-2Z , 50/5NPPU,50/8-2RS , 4201-LLU , 3202-DDU , 5203-2RSR

.Low running noise,high precision class 

.Reliable long running life ,

.Material besides chrome steel GCr15/SAE52100/DIN100Cr6, anti-corrosion stainless material SS440/SS304/SS316/Ceramic ZrO2,Si3N4/Plastic Nylon PA,POM,PEEK are available


  • 50/4-2Z , 50/5NPPU,50/8-2RS , 4201-LLU , 3202-DDU , 5203-2RSR
  • Neutral, AND brand or any other brands authorized .

.Double row raceway which are better uniform and accurate are in one ring , better than tandem 2pcs of single row bearing .

.Well sealing,prevent water vapour, corrosive gases intrude into the bearing and prevent the grease leak out , means maintenance free during its life time, our bearings run with low noise , high precision , high speed because well lubricated by pregreased.

.Support radial load and fairly degree of axial load

.According to the temperature, humidity , cleanliness which the equipments served by the motor will face to , RPM speed , force bring to the bearing , bearing components material,tolerance grade , heat treatment method,internal play,grease,parameters of raceway…will be considered professionally and comprehensively.

.For example , normally chrome steel GCr15/SAE52100/DIN100Cr6 is used for rings , NBR,HNBR/Viton FPM/ACM for seals , steel ribbon/Nylon PA/PTFE/PEEK/Brass for the cage, chrome steel/stainless steel/Ceramic ZrO2 Si3N4 for the balls . Sometimes hybrid is designed if necessary .

.Internal play can be C2,C0,C3…..or special data according to engineering.

.Our bearing normally operating temperature range -30°C to +110°C . With different material/heat treatment/grease…..will be wider range , consult us for more detailed information if you need.

.For special requires , extreme high/low temperature , insulation , anti-corrsion,RPM…… consult to us.

.Each piece product from us is customized based on customer’s  request to the bearing, our action guiding goal is engineering and supply them with top quality&best price.

.We are partnership supplier to ODM/OEM/wholesaler , we are unsung heros, supporting machines running in every corner of the world.





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