abec ball bearings

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abec bearings

Abec Bearings,Abec Ball Bearings - PYC

The ABEC rating of a bearing is determined by the following (for a 608 size bearing):

   1. How close the bore is to 8mm in microns
   2. How close the outer diameter is to 22 in microns
   3. How close the width is to 7mm in microns
   4. The rotating accuracy in microns

Features :  
Shield / Closure: Open,Teflon Sealed,Rubber Seals,2 Metal Shield
Tolerance codes: ABEC-3, ABEC-3, ABEC-5, ABEC-7,ABEC-9
Material: AISI52100(Chrome Steel), AISI440C(Stainless Steel),Ceramic(Si3n4 or Zro2)
Size: 8x22x7mm 608 bearings ,  8x16x5 688 bearings ,  7x22x7 627 bearings ,  10x22x6 6900 bearings

Metal Shield Bearings
Metal Shield Bearings
Open Bearings
Open Bearings
Rubber Seals Bearings
Rubber Seals Bearings
Teflon Skateboard Bearing
Teflon Skateboard Bearing
Hybrid Ceramic Bearings
Hybrid Ceramic Bearings
Full Ceramic Bearings
Full Ceramic Bearings
Full Complement Skate Ceramic Bearing
Full Complement Skate Ceramic Bearing
Extended Ceramic Bearings with Built-in Spacers
Extended Ceramic Bearings with Built-in Spacers

The second column of the table lists the corresponding tolerance classes as defined by ISO, the International Organization for Standardization. Both systems are widely used in the bearing industry but ABEC has been adopted by skate manufacturers.

When choosing the ABEC grade, the factors to be considered are: radial and axial runout requirements, bore and O.D. fits, and audible noise level. The table below shows the bore and O.D. size tolerances and the radial runout limits for each ABEC grade. Grades 3 and 7 are preferred for most standard applications.

Normally, race finish and race geometry are superior in ABEC 5 and higher. PYC Bearing recommends these grades for precision assemblies where low noise (mechanical or audible), minimal runout and long life are important considerations.

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