Abstract: A female coupling unit for a hydraulic coupling device, comprises a female coupling body comprising a hollow core, wherein a rear sealing ring is provided along an inner circumferential surface of a sealing sleeve device and adapted to bear against and slide along a front end portion of a female poppet device during movement of the sealing sleeve device, wherein the rear sealing ring is configured to prevent flow of hydraulic fluid between the rear sealing ring and the female poppet device from the rear end of the female coupling body towards the front end of the female coupling body and enable flow of hydraulic fluid between the rear sealing ring and the female poppet device from the front end of the female coupling body towards the rear end of the female coupling body.

Abstract: A hydraulic coupling device (10) comprising a female coupling unit (30) comprising a female coupling body (31), a holding block (50), a guiding ring (60), and an expanding ring (70) for fixedly arranging the female coupling unit (30) to the holding block 50 in an opening (52a) of the holding block (50), wherein the guiding ring (60) comprises an outer surface (60a) comprising a thread surface portion (60a1) configured to engage with a thread surface portion (52c1) of a cylindrical portion (52c) of the opening (52a) of the holding block (50) fixedly arranging the guiding ring (60) to the holding block (50), wherein a seat (53) is provided in the opening (52) for supporting the expanding ring (70), wherein an outer surface (31a) of the front end of the female coupling body (31) comprises a circumferential groove (31f) comprising a groove seat (31g), configured to receive the expanding ring (70), wherein the female coupling unit (30) is adapted to be fixedly arranged to the holding block (50) by being suspended

Abstract: A male coupling unit for a hydraulic coupling device, comprising a male coupling body comprising a hollow core comprising a male coupling body center axis extending in a male coupling body extension direction, wherein the male coupling body comprises an inner surface wherein the male coupling body further comprising a poppet valve device arranged in the hollow core, wherein the poppet valve device comprises a poppet device, a guide device, and a spring device, wherein a first end of the spring device is supported by the poppet device and a second end of the spring device is supported by the guide device, wherein the poppet device is movable in relation to the guide device along the male coupling body extension direction between an open and closed position upon compression and extension of the spring device respectively, wherein the guide device is locked in the male coupling body extension direction, wherein the inner surface comprises a thread surface portion, wherein the guide device comprises an outer surf