A roller pitch bearing for a wind turbine comprising: a first bearing component and a second bearing component, the first bearing component being configured to rotate with respect to the second bearing component; wherein one of the first and the second bearing components is configured to be coupled to a wind turbine blade and the other one of the first and the second bearing components is configured to be coupled to a rotor hub of a wind turbine; wherein the first bearing component comprises an upper side configured to face a wind turbine blade and a lower side configured to face a rotor hub, and wherein the second bearing component comprises an upper side configured to face a wind turbine blade and a lower side configured to face a rotor hub; upper row of rollers and lower row of rollers arranged between the first and the second bearing components, wherein the upper rollers are sandwiched between an upper rolling surface 122 of the second bearing component and an upper rolling surface of the first bearing component and the lower rollers are sandwiched between a lower rolling surface of the second bearing component and a lower rolling surface of the first bearing component; a limiting structure attached to the upper side or to the lower side of the first bearing component, the limiting structure radially extending from the first bearing component towards the second bearing component, characterized in that the limiting structure comprises a radially extending portion and a U-shaped engaging portion comprising a receptacle engaging with and receiving a protrusion of the second bearing component to limit a radial movement between the bearing components (110, 120); wherein the receptacle and the protrusion comprise an inner sidewall (161, 171), an outer sidewall (162, 172) and a bottom surface (163, 173) connecting the inner sidewall (161, 171) to the outer sidewall (162, 172); and one or more gliding pads arranged between the inner sidewalls (161, 171) and/or between the outer sidewalls (162, 172). a first bearing component and a second bearing component, the first bearing component being configured to rotate with respect to the second bearing component; wherein one of the first and the second bearing components is configured to be coupled to a wind turbine blade and the other one of the first and the second bearing components is configured to be coupled to a rotor hub of a wind turbine; wherein the first bearing component comprises an upper side configured to face a wind turbine blade and a lower side configured to face a rotor hub, and wherein the second bearing component comprises an upper side configured to face a wind turbine blade and a lower side configured to face a rotor hub; upper row of rollers and lower row of rollers arranged between the first and the second bearing components, wherein the upper rollers are sandwiched between an upper rolling surface 122 of the second bearing component and an upper rolling surface of the first bearing component and the lower rollers are sandwiched between a lower rolling surface of the second bearing component and a lower rolling surface of the first bearing component; a limiting structure attached to the upper side or to the lower side of the first bearing component, the limiting structure radially extending from the first bearing component towards the second bearing component, characterized in that the limiting structure comprises a radially extending portion and a U-shaped engaging portion comprising a receptacle engaging with and receiving a protrusion of the second bearing component to limit a radial movement between the bearing components (110, 120); wherein the receptacle and the protrusion comprise an inner sidewall (161, 171), an outer sidewall (162, 172) and a bottom surface (163, 173) connecting the inner sidewall (161, 171) to the outer sidewall (162, 172); and one or more gliding pads arranged between the inner sidewalls (161, 171) and/or between the outer sidewalls (162, 172).