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The article reviews the possibility of developing double-row axial-piston hydraulic machines with an inclined cylinder block by improving the block design. The block design is improved by placing a second pumping unit in it and also locating additional working chambers with smaller pistons in the inter-cylinder zones. It is shown that an increase in the outer diameter of the initial cylinders block by only 10% provides an increase in the operating volume, torque and power of the new hydraulic machine by 33%. Such design improvement of the block of a new hydraulic machine in comparison with the analogue such as a hydraulic machine with an inclined disk gives a greater result: an increase in the operating volume, torque and power in a hydraulic machine with an inclined block is 78% more compared to a hydraulic machine with an inclined block, all other things being equal. The possibility of developing a high-torque axial-piston hydraulic motor by pairing two double-row pumping units while simultaneously eliminating the overall dimension of the bearing unit by closing axial loads on the drive shaft of the machine and halving the ripple is additionally considered.

Analysis of structures, properties and basic indicators of two-row axial piston hydraulic machines with an inclined cylinders block