Chuck for screwdriver or drilling tool has conical end portion accommodating three jaws to grip shank of tool and has pressure disk and frame accommodated in coupling member

摘要

The chuck has a housing (10) for the chuck jaw assembly (20). Three jaws (21) are spring-loaded (22) apart and slide on a conical surface inside the housing. A pressure plate (30) is pushed down onto the jaws by a frame (92) with three legs (921) attached to a ring (920). The legs pass through a central body (80) with screw threads (81,821,823). There is a rotatable housing (95) with a knurled portion (934) and internal ribs (952). There is a knurled outer ring (83).