| 摘要 |
<p>A pivot ball assembly for use in swivelly attaching a bulldozer blade to a support arm, and the assembly includes an inner race member and an outer race member. The support arm receives the assembly and restricts the movement of the outer race member, and a retainer ring is supported on the support arm and engages the outer race member and is held to the support arm by screws. Extending through the center of the inner race member and the outer race member is a bolt, which bolt is secured in place by a nut mounted on one end thereof. Spacers are provides around the ends of the bolt to prevent excessive tightening thereof.</p> |
