A machine system for processing a hollow shaft by simultaneously lapping a first machining surface of the hollow shaft and an opposing second machining surface of the hollow shaft, the machine system comprising: a support structure; a brake subsystem adjustably carried by the support structure, a lapping tool (111; 401; 501) carried by the support structure, the lapping tool (111; 401; 501) being adapted to extend within the hollow shaft; wherein the lapping tool (111; 401; 501) comprises: a central arbor (307; 403) having a first end portion and a second end portion, the first end portion being spaced apart from the second end portion; a removable top lap (303; 411; 517) coupled to the first end portion, the top lap having an abrasive surface, the abrasive surface being configured to come into contact with the first machining surface of the hollow shaft; a bottom lap (301; 407) configured to couple to the second end portion, the bottom lap (301; 407) having an abrasive surface, the abrasive surface being configured to come into contact with the second machining surface of the hollow shaft; and a drive subsystem carried by the support structure and rotatably coupled to the lapping tool (111; 401; 501); and the drive subsystem is configured to rotate the lapping tool (111; 401; 501) within the hollow shaft for lapping the first machining surface with the abrasive surface of the top lap (303; 411; 517) while simultaneously lapping the second machining surface with the abrasive surface of the bottom lap (301; 407) the machine system being characterized in that, the abrasive surface (309, 311) of the top lap (303; 411; 517) and the bottom lap (301; 407) extend at a linear angle relative to the rotational axis of the central arbor (307; 403) and the brake subsystem is configured to secure the hollow shaft in a stationary position so that the center axis of the hollow shaft is coaxial with the center axis of the lapping tool. a support structure; a brake subsystem adjustably carried by the support structure, a lapping tool (111; 401; 501) carried by the support structure, the lapping tool (111; 401; 501) being adapted to extend within the hollow shaft; wherein the lapping tool (111; 401; 501) comprises: a central arbor (307; 403) having a first end portion and a second end portion, the first end portion being spaced apart from the second end portion; a removable top lap (303; 411; 517) coupled to the first end portion, the top lap having an abrasive surface, the abrasive surface being configured to come into contact with the first machining surface of the hollow shaft; a bottom lap (301; 407) configured to couple to the second end portion, the bottom lap (301; 407) having an abrasive surface, the abrasive surface being configured to come into contact with the second machining surface of the hollow shaft; and a drive subsystem carried by the support structure and rotatably coupled to the lapping tool (111; 401; 501); and the drive subsystem is configured to rotate the lapping tool (111; 401; 501) within the hollow shaft for lapping the first machining surface with the abrasive surface of the top lap (303; 411; 517) while simultaneously lapping the second machining surface with the abrasive surface of the bottom lap (301; 407) the machine system being characterized in that, the abrasive surface (309, 311) of the top lap (303; 411; 517) and the bottom lap (301; 407) extend at a linear angle relative to the rotational axis of the central arbor (307; 403) and the brake subsystem is configured to secure the hollow shaft in a stationary position so that the center axis of the hollow shaft is coaxial with the center axis of the lapping tool. a central arbor (307; 403) having a first end portion and a second end portion, the first end portion being spaced apart from the second end portion; a removable top lap (303; 411; 517) coupled to the first end portion, the top lap having an abrasive surface, the abrasive surface being configured to come into contact with the first machining surface of the hollow shaft; a bottom lap (301; 407) configured to couple to the second end portion, the bottom lap (301; 407) having an abrasive surface, the abrasive surface being configured to come into contact with the second machining surface of the hollow shaft; and a drive subsystem carried by the support structure and rotatably coupled to the lapping tool (111; 401; 501); and the drive subsystem is configured to rotate the lapping tool (111; 401; 501) within the hollow shaft for lapping the first machining surface with the abrasive surface of the top lap (303; 411; 517) while simultaneously lapping the second machining surface with the abrasive surface of the bottom lap (301; 407) the machine system being characterized in that, the abrasive surface (309, 311) of the top lap (303; 411; 517) and the bottom lap (301; 407) extend at a linear angle relative to the rotational axis of the central arbor (307; 403) and the brake subsystem is configured to secure the hollow shaft in a stationary position so that the center axis of the hollow shaft is coaxial with the center axis of the lapping tool.