A hydraulic implement of the type that can be fixed to a moving arm of an operating machine and that includes a rotating working element comprising a support structure connected or connectable to a moving arm of the operating machine and at least one hydraulic motor for the rotation of said working element and comprising a feed pipe connected or connectable to a hydraulic circuit of the supporting operating machine to supply a flow of working fluid to the hydraulic motor, a return pipe by means of which the flow of working fluid is returned into the hydraulic circuit of the supporting operating machine and a drainage unit (8, 81, 33) for the drainage of working fluid from said hydraulic motor, said drainage unit (8, 81, 33) comprising a drainage pipe through which the drained working liquid intended for lubricating the bushes of the hydraulic motor flows; the hydraulic implement comprises pressure detecting means for detecting, directly or indirectly, the pressure present in said drainage pipe and a shut-off valve operationally associated with said pressure detecting means in such a way as to interrupt the flow of working fluid in said feed pipe to said hydraulic motor when predetermined pressure conditions are detected by said pressure detecting means; the hydraulic implement being characterised in that said drainage unit comprises a pump, said pump operating on the flow of working fluid that passes through said drainage pipe; the hydraulic equipment further comprising a containment tank which is connected to said drainage unit (8, 81, 33) upon the achievement of a predetermined pressure of the operating fluid, in such a way as to cause the filling of said containment tank and the activation of said shut-off valve, interrupting the flow of working fluid to said hydraulic motor when said containment tank is filled above a predetermined level; wherein said shut-off valve comprises a slider movable between a first position wherein the passage of fluid is permitted and a second position wherein the flow is interrupted; the hydraulic equipment comprising a connecting pipe that connects said containment tank and said shut-off valve and is capable of delivering a flow of fluid, upon the achievement of a predetermined level, to a thrust surface of said slider in such a way as to move it from said first position to said second position. the hydraulic implement comprises pressure detecting means for detecting, directly or indirectly, the pressure present in said drainage pipe and a shut-off valve operationally associated with said pressure detecting means in such a way as to interrupt the flow of working fluid in said feed pipe to said hydraulic motor when predetermined pressure conditions are detected by said pressure detecting means; the hydraulic implement being characterised in that said drainage unit comprises a pump, said pump operating on the flow of working fluid that passes through said drainage pipe; the hydraulic equipment further comprising a containment tank which is connected to said drainage unit (8, 81, 33) upon the achievement of a predetermined pressure of the operating fluid, in such a way as to cause the filling of said containment tank and the activation of said shut-off valve, interrupting the flow of working fluid to said hydraulic motor when said containment tank is filled above a predetermined level; wherein said shut-off valve comprises a slider movable between a first position wherein the passage of fluid is permitted and a second position wherein the flow is interrupted; the hydraulic equipment comprising a connecting pipe that connects said containment tank and said shut-off valve and is capable of delivering a flow of fluid, upon the achievement of a predetermined level, to a thrust surface of said slider in such a way as to move it from said first position to said second position.