| 摘要 |
A die or punch 2 for a press tool comprises a body, and a roller bearing 7 having a holder 9 and a roller 8. The holder 9 has at least one fastening groove 7a in a side that is adapted to engage with a complimentary protrusion in the body 6 in order to facilitate secure installation of the holder 9 in the body 6. The holder 9 is able to be removably inserted into the body 6 to present the roller 8 as a forming edge to shape a work piece 4 in a press tool. The roller 8 is able to turn with respect to the holder 9 when shaping the work piece 4 to protect the roller 8 against wear |
