| 摘要 |
PROBLEM TO BE SOLVED: To provide a water pump bearing capable of elongating its life by ensuring more grease amount on the neighborhood of a rolling surface which needs lubrication. SOLUTION: A float ring 15 obtained by forming a lubricant reservoir part (through-hole) 16 is rotatably mounted on a space 13 between a Ft side ball array 9 and a Rr side ball array 10, formed between an outer ring 1 and rotary shaft 4.
|
