| 摘要 |
A handheld paving breaker (1) includes a reciprocal chuck (40) in a fronthead (20) and an elastic spring (52) for biasing the chuck toward the fronthead, The chuck can move longitudinally, but is restrained from rotation in the fronthead. A moil (28) mounted in the chuck is biased against the work surface by the chuck, to provide better control of the moil, during start-up and operation. Wear pads (130 136) between the spring and members against which the spring is seated improve spring life.
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