WORKING DEVICE OF CONSTRUCTION MACHINE

PROBLEM TO BE SOLVED: To reduce a burden in the work phase and the cost phase, by easily providing both a bearing device endurable against a load and a bearing device superior in abrasion resistance, without replacing an arm. SOLUTION: This working device is constituted by installing an abrasion resistant top 32 having a durable bearing device 34 having higher durability against abrasion than a bearing device 14 of a standard specification arranged on the tip side of the arm 13, on the tip side of the arm 13 instead of a bucket 15. Thus, when performing work on which the load acts, the bucket 15 is directly installed on the bearing device 14 of the arm 13. While, when performing work of fearing abrasion by intrusion of sediment, the abrasion resistant top 32 having the durable bearing device 34 is installed on the tip side of the arm 13, and the bucket 15 is installed in this durable bearing device 34. Thus, both the bearing device 14 endurable against the load and the durable bearing device 34 superior in abrasion resistance can be provided by simple work. COPYRIGHT: (C)2008,JPO&INPIT