Disclosed is a bed (1) comprising a bottom frame (2) including support means (5) for engaging an underlying ground and a top frame (3) comprising a bed surface (6) for supporting a person lying in the bed (1). The bed (1) also comprises a lifting mechanism (4) arranged between the bottom frame (2) and the top frame (3) to displace the bottom frame (2) and the top frame (3) in relation to each other, wherein the lifting mechanism (4) comprises a first lifting arm (7) being driven by a first actuator (13) and a second lifting arm (8) being driven by a second actuator (14). The lifting arms (7, 8) are rotatably connected to the bottom frame (2) in a first bottom frame point of attack (9) and a second bottom frame point of attack (10), respectively and both slidably and rotatably connected to the top frame (3) in a first top frame point of attack (11) and a second top frame point of attack (12), respectively. The first lifting arm (7) is rotatably connected to the bottom frame (2) in the first bottom frame point of attack (9) around a first bottom frame rotational axis (23) and the second lifting arm (8) is rotatably connected to the bottom frame (2) in the second bottom frame point of attack (10) around a second bottom frame rotational axis (24) and wherein the first bottom frame rotational axis (23) and the second bottom frame rotational axis (24) are substantially coaxial.
