| 摘要 |
A chuck for use with a manual or powered driver includes a generally cylindrical body having a nose section and a tail section. The tail section is adapted to rotate with the drive shaft. The nose section defines an axial bore with angular passageways for receipt of chuck jaws. The chuck includes a generally cylindrical sleeve in driving engagement with a nut mounted about the chuck body so that when the sleeve is rotated with respect to the body, the jaws will be moved thereby. The jaws are slidably positioned in the passageways and include a tool engaging face and threads on the opposite side thereof to engage threads on the nut. The body includes a thrust bearing ring received by the nut so that the thrust ring holds the nut against forward and rearward axial movement with respect to the body.
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