ANTIFRICTION BEARING UNIT WITH ROTATIONAL SPEED DETECTOR

摘要

PURPOSE: To locate surely a torn wheel relative to the inner ring having a structure capable of increasing the output of a sensor. CONSTITUTION: A torn wheel 13b fixes the small diameter part 14a to the inner ring 5 by externally fitting the small diameter part 14a on the end of the inner ring 5. A collar part 37 formed on the inner peripheral surface of the intermediate part of the small diameter part 14a abuts against the end face of the inner ring 5, so that the torn wheel 13b is located relative to the inner ring 5.