| 摘要 |
<p>With drum brakes there is a problem that new or newly lined brake shoes require a certain bedding-in period, so that frequently during this period the required braking values are not achieved. If the rubbing surface (9) of a friction lining (7), in relation to the circumferential direction, is interrupted in the central zone by a free space (8), the bedding in period is reduced and required braking values are achieved rapidly.</p> |
