Abstract: A pneumatic vane motor comprising a housing (10) with a cylinder (11), two end walls (13,14), and a rotor (18) journalled in the housing (10) and carrying one or more pairs of sliding vanes (31), and vane supporting pins (32) longitudinally movable in transverse bores (33) in the rotor (18) and forming spacers between two diametrically opposite vanes (31), and the rotor (18) having a coaxial bore (48) with a closed end (49) and an open end (50) closed by a removable plug (51), wherein the coaxial bore (48) intersects the transverse bores (33) and being filled with a lubricant for providing lubrication of the vane supporting pins (32).