A running gear unit for a rail vehicle, comprising - a running gear frame body defining a longitudinal direction, a transverse direction and a height direction; - said frame body comprising two longitudinal beams and a transverse beam unit providing a structural connection between said longitudinal beams in said transverse direction, such that a substantially H-shaped configuration is formed, - said transverse beam unit comprising at least one transverse beam (109.1); - each longitudinal beam having a suspension interface section associated to a free end section (108.1) of said longitudinal beam and forming a primary suspension interface for a primary suspension device (105.1) connected to an associated wheel unit ; - each longitudinal beam having a pivot interface section associated to said primary suspension interface section and forming a pivot interface for a pivot arm connected to said associated wheel unit ; - said primary suspension interface being configured to take a total resultant support force acting in the area of said free end section (108.1) when said frame body is supported on said associated wheel unit ; - said primary suspension interface being configured such that said total resultant support force is inclined with respect to said longitudinal direction and inclined with respect to said height direction; - said total resultant support force being inclined with respect to said longitudinal direction by a primary suspension angle; - said primary suspension angle ranging from 40° to 50°, characterized in that - said at least one transverse beam (109.1), in a sectional plane parallel to said longitudinal direction and said height direction, defines a substantially C-shaped cross section. - a running gear frame body defining a longitudinal direction, a transverse direction and a height direction; - said frame body comprising two longitudinal beams and a transverse beam unit providing a structural connection between said longitudinal beams in said transverse direction, such that a substantially H-shaped configuration is formed, - said transverse beam unit comprising at least one transverse beam (109.1); - each longitudinal beam having a suspension interface section associated to a free end section (108.1) of said longitudinal beam and forming a primary suspension interface for a primary suspension device (105.1) connected to an associated wheel unit ; - each longitudinal beam having a pivot interface section associated to said primary suspension interface section and forming a pivot interface for a pivot arm connected to said associated wheel unit ; - said primary suspension interface being configured to take a total resultant support force acting in the area of said free end section (108.1) when said frame body is supported on said associated wheel unit ; - said primary suspension interface being configured such that said total resultant support force is inclined with respect to said longitudinal direction and inclined with respect to said height direction; - said total resultant support force being inclined with respect to said longitudinal direction by a primary suspension angle; - said primary suspension angle ranging from 40° to 50°, characterized in that - said at least one transverse beam (109.1), in a sectional plane parallel to said longitudinal direction and said height direction, defines a substantially C-shaped cross section. <EOS>