Abstract: The present invention relates to a method of attaching a wear part to an earth-working tool and a thereto adapted wear part. Characteristic of the invention is that the parts are joined together by means of a press fit which in turn is blocked by means of pretensioned resilient locking means which when fitted in place continually act upon the parts in the direction of interconnection. The invention provides a play-free and reliable interconnection for the tool and wear part, which is also very easy to remove.

Abstract: This invention relates to a wear-parts system for earth-moving machines such as digger, loading, and mining machines. This wear-parts system consists of a holder (2, 23) and at least one protruding wear-part (8, 24) in the form of a tooth or similar fixed on the front of the holder (2, 23) by means of a wedge or other locking device (15, 16, 38).

Abstract: This invention refers to a locking device (14) for a wear-parts system (1) and (2) for earth moving machines. The locking device (14) consists of a rigid lock bolt (17) connected to a lock catch (19) which is intended to prevent the lock bolt (17) falling out after it has been fitted in the lock opening (12, 13) for this purpose where it prevents the different parts (1) and (2) of the wear-part from moving relative to each other. According to this invention the lock catch (19) is designed so that it can be easily fitted in position together with the lock bolt (17) and there provide the best possible locking action. On the other hand no regard has been paid to the lock catch (19) being able to be loosened from the outside in order to remove the lock bolt (17). Instead a breaking point (29) has been provided along the fixation of the lock catch (19) in the lock bolt (17). The breaking point (29) makes it possible by means of subjecting the lock bolt (17) to forces e.g.