638ZZ deep groove ball bearing for auto motorcycle 8x28x9mm

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  • 638ZZ deep groove ball bearing for auto motorcycle 8x28x9mm

638ZZ deep groove ball bearing for auto motorcycle 8x28x9mm

It is mainly engaged in the R & D and production of various high-end precision bearings ,military bearings, energy-saving and environment-friendly motorized spindles of high-end CNC machine tools, high-end equipment and components, new energy auto motive bearings,etc.
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  • 638ZZ deep groove ball bearing for auto motorcycle 8x28x9mm
  • Product Description
  • 1. The advantages of light weight and low cost,for compact application,easy fitting;
    2. Oil pockets stored oil or grease, then the time for apply oil is extended over 5 times than the ones of general copper sleeve;
  • About Products
Dimensions:8x28x9mm.
Shields or seals on both sides
100% Chrome Steel, long-life, smooth and low noise, also has high durability and resistance to under heavy loads.
Deep Groove Ball Bearing is widely used to accommodate radial and axial loads in both directions.
  • Product Application
Our products cover almost the entire applicable fields of equipment manufacturing and machinery manufacturing and processing industries, and are widely used in automobiles, home appliances, machine tools, motors, water pumps, agricultural machinery, textile machinery and many other fields.
  • Product Parameter
External Dimension (mm)
 Extra Load Reference weight (closed)
Basic
Bearing No
 d D B Rsmin Cr Cor
638ZZ 8 28 9 0.3 4160 1780 0.0303
638RS
 8
 28
 9
 0.3
 4160
 1780
 0.0303
  • Material of the Bearing
Bearing Ferrule and roller: Made of high-carbon chromium bearing steel ( Gcr15 ).
Maintainer: Made of Cold reduced plate ( 08# or 10# ) . Can adopt enganced engineering plastic if necessary.
Dust Cover: Made of special material ( SPCC ) or stainless steel plate ( 1Cr18Ni9 or 1Cr13 ).
Sealing Ring: Adopt steel plate ( 08 # or 10 # ) framework with surface treatment and butadiene-acrylonitrile rubber ( NBP )afterheat pressure,can adopt steelplate framework ( 1Cr18Ni9) with special rubber of oil & heat resistance.

Related Products

Ningbo Bemeda Bearing Co., Ltd.

Ningbo Bemeda Bearing Co., Ltd. is leading China 638ZZ deep groove ball bearing for auto motorcycle 8x28x9mm suppliers and OEM/ODM 638ZZ deep groove ball bearing for auto motorcycle 8x28x9mm company specializing in the production of F series flange bearings and various precision micro motor bearings. The company has a fully automatic heat treatment furnace for leftovers, more than 30 intelligent fully CNC automatic grinding and super production lines; Automatic assembly machine and automatic cleaning and greasing capping machine; High precision roundness detector, hardness detector, noise detector, etc. The reasonable use of high-precision testing instruments ensures that the quality of each process from raw materials to finished products is controlled, and improves the requirements for precision bearings.

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