KOYO HAR007C is designed for supporting axial load, HAR type, which with a phenolic resin machined cage (FT), compared with the standard type, HAR type angular contact ball bearings has more balls that are smaller in the diameter and are often used in machine tool spindles.

For details, see the KOYO ball bearings HAR007C technical data as below, 

   
d =35
D =62
T = 14
Mass =0.158
Basic Dynamic Load Rating Cr: 9.25 KN
Basic Static Load Rating Cor: 5.55 KN
Limiting Speed - Grease Lubrication: 2300...