Pipe machining apparatuses and methods of operating are provided. In one aspect, a pipe machining apparatus includes an advancement mechanism coupled to a frame and adapted to move relative to the frame between a first position, in which the advancement mechanism is in a travel path of an advancement member and is adapted to be engaged by the advancement member to advance a tool, and a second position, in which the advancement mechanism is positioned out of the travel path of the advancement member and is not adapted to be engaged by the advancement member. In another aspect, a pipe machining apparatus includes multiple motors and pinion gears engaged with a gear rack of a tool carrier. In a further aspect, a pipe machining apparatus includes a race wiper. In yet another aspect, a pipe machining apparatus includes a race lubrication member.

Pipe machining apparatuses and bearing assemblies are provided. In one aspect, a pipe machining apparatus includes a frame, a tool carrier, a first roller bearing and a second roller bearing. The tool carrier is coupled to and movable relative to the frame and defines a race therein. The first roller bearing includes a first shaft and a first roller rotatably coupled to the first shaft. The first roller is at least partially positioned in the race and is rotatable about a first roller bearing axis adapted to remain substantially fixed relative to the frame. The second roller bearing includes a second shaft and a second roller rotatably coupled to the second shaft. The second roller is at least partially positioned in the race and is rotatable about a second roller bearing axis. The second roller bearing is adjustable to move the second roller bearing axis relative to the frame.

A method and apparatus for angularly drilling during a tapping procedure into a pressurized multiple strings of coaxially situated tubulars for wells and/or platforms which have overturned wherein the tapping occurs underwater via a diver or remotely operated vehicle.

Pipe machining apparatuses and methods of operating are provided. In one aspect, a pipe machining apparatus includes an advancement mechanism coupled to a frame and adapted to move relative to the frame between a first position, in which the advancement mechanism is in a travel path of an advancement member and is adapted to be engaged by the advancement member to advance a tool, and a second position, in which the advancement mechanism is positioned out of the travel path of the advancement member and is not adapted to be engaged by the advancement member. In another aspect, a pipe machining apparatus includes multiple motors and pinion gears engaged with a gear rack of a tool carrier. In a further aspect, a pipe machining apparatus includes a race wiper. In yet another aspect, a pipe machining apparatus includes a race lubrication member.

A reverse spot-facing tool for cutting a reverse spot-face in a workpiece using a reverse spot-facing cutter configured to engage a pilot shaft having a first end and a second end is disclosed. The workpiece comprises a through hole having a central axis. The reverse spot-facing tool comprises a stop configured to be located between the first end and the second end of the pilot shaft; a biasing assembly that generates a first thrust force and an equal and opposite second thrust force when the reverse spot-facing cutter is cutting the reverse spot face; and a thrust bearing configured to be positioned between the biasing assembly and the stop. When the reverse spot-facing cutter is cutting the reverse spot-face, the thrust bearing transmits the second thrust force from the biasing assembly to the stop, and the biasing assembly transmits the first thrust force to the workpiece.

A driver-drill (1) includes a motor (16), a spindle (32), which is rotationally driven using rotational energy output by the motor (16), and a chuck (30), which rotates integrally with the spindle (32). The chuck (30) includes: a chuck body (31); a chuck sleeve (80), which is externally mounted on the chuck body (31); and two or more chuck jaws (67), which are provided in the chuck body (31) and which expand and contract relative to the rotational axis of the spindle (32) in response to manual rotation of the chuck sleeve (80). The spindle (32) may be integrally formed (in one piece) with the chuck body (31). In addition or in the alternative, the chuck body (31) may be rotatably supported by a bearing (42) disposed in a tube-shaped housing (6).

A work material stabilizer for a lathe. The work material stabilizer comprises a center support bar having a predetermined opening from side to side and near one of the end pieces. The center support is detachedly affixed to a linear slide block and the linear slide block is detachedly affixed to a linear slide bar and the linear slide bar is detachedly affixed to a metal cutting bar. There is a bearing having a centered opening located in an opening in the center support bar.

A spindle for a machine tool, including a housing, a shaft for driving a cutting tool, rotatably mounted inside the housing with a possibility of axial movement relative to the housing, a single ball, axially interposed between a bearing ring fixed relative to the housing and a bearing ring movable with the shaft, one of these rolling rings defining an inclined bearing surface that is not perpendicular to the axis of rotation of the shaft, so that the rotation of the ball generates an axial oscillation of the shaft.

A turret device having a configuration for obtaining required processing accuracy, includes: an indexing motor configured to pivotally index a turret tool; a turret shaft configured to transmit a rotation of the indexing motor; and a turret head coupled to the turret shaft on which multiple turret tools are mounted on a circumference, wherein the turret head includes a diaphragm-type base member coupled to the turret shaft, an inner diameter side of the base member is coupled to the turret shaft, and an outer diameter side of the base member is rotationally supported by a bearing fixed to a main body member of a turret.

A finishing tool, includes: a housing having a cylindrical holder chamber that opens toward a distal end and located along a central axis; a slide sleeve disposed coaxially with the central axis in the holder chamber and rotates only in a first direction; a drive sleeve disposed coaxially with the central axis in the holder chamber and rotates only in the first direction; a tool chip having a spherical surface at a distal end; and a chip holder penetrating the slide sleeve and the drive sleeve, reciprocable between a forward end and a rearward end, capable of mounting the tool chip at a distal end, axially slidable relative to the slide sleeve, and rotates in the first direction as the chip holder moves forward relative to the drive sleeve.