Abstract: A modular sensing device has multiple assembling components, and at least one object-detection sensor. The assembling components extend along a direction. Each one of the assembling components has a housing being tubular and an electrical connecting device mounted inside the housing. The housings of the multiple assembling components are detachably connected in sequence. The at least one object-detection sensor is mounted to one of the assembling components. The electrical connecting devices of the assembling components are electrically connected in sequence and are electrically connected to the at least one object-detection sensor. The detachable housings of the assembling components make the modular sensing device applicable to conveyors of different widths and promote flexibility of installation.

Abstract: A belt device includes a first stretching member and a detector. The first stretching member stretches an endless belt capable of rotational movement. The detector detects a base of the belt and/or a density of a toner image on the belt. The first stretching member includes a first parallel area that is parallel to an axial direction, which is a direction of a rotation axis of the belt, and a first inclined area that is connected to an outer side of the first parallel area with respect to the axial direction and is inclined in a direction closer to the rotation axis. The detector detects a location corresponding to a first boundary between the first parallel area and the first inclined area or a location corresponding to a predetermined first adjacent area that is adjacent to and on an inner side of the first boundary.

Abstract: Systems for automatically leveling a base frame of a bulk material transport conveyor include radial travel wheels mounted on generally opposing sides of the base frame that can move from a raised position above the ground to a lowered position in contact with the ground to permit radial travel of the conveyor. Actuators normally used to raise or lower the radial travel wheels may be actuated automatically by a controller in response to a signal from an inclination and/or limit sensor mounted on the conveyor that represents a non-level orientation of the conveyor, to level the base frame.

Abstract: A conveyor apparatus (1) can include a control mechanism to permit automatic monitoring of a conveyor belt (7) and automatically actuate adjustment of the belt (7). In some embodiments, at least two sensors (31) can be utilized to detect an operational condition of the belt (7) indicating an undesirable alignment of the belt as the belt moves to convey material. Upon such a detected operational condition, a control mechanism can automatically actuate adjustment of at least one belt support device to adjust motion of the belt (7) in response to the detected operational condition.

Abstract: According to one embodiment, a tablet printing apparatus includes: a conveyor belt configured to convey a tablet; a print head configured to perform printing on the tablet conveyed by the conveyor belt; and a belt-position detector configured to detect the position of the conveyor belt in a direction crossing the conveying direction of the tablet in a horizontal plane. The conveyor belt includes a plurality of holes arranged in a row along the conveying direction of the tablet to hold the tablet. The belt-position detector includes an imaging device configured to capture an image of two or more of the holes; and an image processing device configured to detect the position of the conveyor belt in the crossing direction based on the image captured by the imaging device.

Abstract: A cold planer including a conveyor system coupled to a frame. The conveyor system includes a conveyor with a conveyor belt that rotates about a conveyor roller. A belt tensioning system is coupled to the conveyor roller and includes an actuator for moving the conveyor roller to place tension on the conveyor belt. One or more processors are configured to receive information related to the conveyor belt and adjust the actuator on the conveyor belt based on the information related to the conveyor belt to provide a constant operating tension on the conveyor belt.

Abstract: Systems and methods for automatically leveling a base frame of a bulk material transport conveyor include raising or lowering either or both radial travel wheels mounted on generally opposing sides of the base frame. Actuators normally used to raise or lower the radial travel wheel actuators may be controlled in response to inclination and/or limit sensors mounted on the conveyor.

Abstract: The control belt has an endless web and a drive drum which drives the web and is arranged within the web silhouette perpendicular to the web running direction. Its shaft is mounted in bearings on both sides of the belt. The shaft bearings can be moved vertically and are connected to a drive for moving them vertically.

Abstract: An arrangement for producing a corrugated board web. The arrangement includes corrugating rollers to produce a corrugated web, a glue application mechanism and a pressure belt module, which comprises a deflection roller with a deflection roller longitudinal center axis, a belt tensioning and belt running regulating roller with a belt tensioning and belt running regulating roller longitudinal center axis and a pressure belt, which is guided about the deflection roller and the belt tensioning and belt running regulating roller, to press a cover web onto the corrugated web provided with glue.

Abstract: A reciprocating rod pumping unit includes a tower; a counterweight assembly movable along the tower; and a drum connected to an upper end of the tower and rotatable relative thereto. The unit also includes a belt having a first end connected to the counterweight assembly, extending over the drum, and having a second end connectable to a rod string. The unit further includes a prime mover for reciprocating the counterweight assembly along the tower; a sensor for detecting a condition of the pumping unit; a brake system for halting movement of the counterweight assembly; and a controller in communication with the at least one of the sensors and operable to activate the brake system in response to detection of the faulty condition of the pumping unit.

Abstract: To provide a printing device such as an inkjet device capable of transporting a recording medium at satisfactory precision with a simple configuration. The inkjet device includes a feed amount correcting section that corrects a feed amount of a recording medium, and a control section that controls the feed amount correcting section. The feed amount correcting unit includes a moving section that moves with a movement of the recording medium in a transporting direction and a displacement sensor section that detects a displacement amount of the moving section, and the control section controls the feed amount of the recording medium based on a difference between a feed amount acquired at a time of printing and a set feed amount set in advance.

Abstract: A tube conveyor with a device for protecting the conveyor belt of the tube conveyor against volumetric overloading, the tube conveyor containing a middle part, situated between a filling site and a discharge site. The conveyor belt coiled essentially into the shape of a tube by the action of rollers mounted on roller stands, a measuring stand is arranged behind the filling site, the measuring stand comprising a stationary frame and a swiveling frame able to pivot relative to the stationary frame, the stationary frame comprising lower rollers mounted beneath a horizontal transverse axis of the coiled conveyor belt, the swiveling frame having upper inclined rollers mounted above the horizontal transverse axis of the coiled conveyor belt and having a force measuring device provided for continuous detection of the loading forces transferred from the conveyor belt, and provided for sending signals representing the loading forces to a control unit.

Abstract: An image forming apparatus includes: an image former that forms a toner image; an intermediate transfer belt that carries the toner image formed by the image former; a first winding corrector that corrects a winding of the intermediate transfer belt; and a second winding corrector that assists the first winding corrector in correcting the winding of the intermediate transfer belt, wherein the second winding corrector includes: an auxiliary roller that stretches the intermediate transfer belt and is supported to be axially movable; and an elastic member that is provided at each of axial ends of the auxiliary roller and urges the auxiliary roller toward an image center position.

Abstract: A belt transporting device includes a belt; first and second adjustment members provided at two respective ends of a tension roller in a belt width direction orthogonal to a direction of rotation of the belt, the first and second adjustment members each being movable by receiving a force from the belt; and a link member that interlocks the movement of the first adjustment member and the movement of the second adjustment member. If the belt is laterally shifted in the belt width direction, one of the first and second adjustment members moves by receiving a force from the belt while the other is moved by the link member such that the tension roller is tilted with respect to a driving roller.

Abstract: A belt conveyor for a road-finishing machine or a charger. The belt conveyor includes a conveyor belt in which a displaceably mounted support element abuts the conveyor belt, and a first and a second piston cylinder unit operate to displace the support element. The first and the second hydraulic piston cylinder units can be pressurised independently of each other in order to move the support element into a desired inclined position. If the conveyor belt of the belt conveyor runs laterally away from the support element, the out-of-true running of the conveyor belt can be counteracted by an inclined position of the support element which moves the conveyor belt back into its original position.

Abstract: A conveyor system includes a first conveyor belt entrained about a separation roller and a support roller disposed upstream from the separation roller, a second conveyor belt entrained about a first roller disposed at an uppermost stream in a transport direction of a sheet-type medium and a second roller disposed downstream therefrom, a belt alignment device to tilt a rotary shaft of the separation roller to restrict a range of belt mistracking of the first conveyor belt in a width direction thereof within a predetermined range, and a restriction member to restrict an amount of inclination of the rotary shaft such that a hypothetical extended plane, which is a hypothetical extension of the outer circumferential surface of the first conveyor belt between the separation roller and the support roller to a downstream side in the transport direction, does not contact a rotational center axis of the first roller.

Abstract: Apparatus for aligning a conveyor belt by engaging the conveyor belt upon misalignment of the conveyor belt during conveying operations.

Abstract: In a device for regulating the linear stability of a revolving belt (10) of a conveying system, a control roller (20) disposed transversely with respect to a belt running direction is pressed against the belt. The control roller (20) can be displaced by means of an actuator co-operating with a sensor detecting the lateral position of the belt (10) in order to displace the control roller (20) to align the belt if the belt (10) drifts laterally. The control roller (20) is mounted on an axle (21) which in the region of a first edge of the belt is pivotably mounted and in the region of a second edge of the belt is connected and movably guided at the second end thereof using guiding and adjusting means. The control roller (20) is disposed with a high degree of looping on the inner face of the belt in a belt loop (22) located substantially perpendicular to a conveying plane and can be pivoted substantially perpendicularly to the conveying plane.

Abstract: The present invention relates to an apparatus for aligning a bidirectional conveyor belt. The apparatus comprises two parallel idler rollers mounted in a parallel configuration between two brackets. The two rollers rotate in opposite directions and are mounted to the underside of a bidirectional conveyor belt. During operation, the apparatus shifts upward and downward along the axis of a shaft, allowing each of the rollers to come into contact with the conveyor belt in an alternating manner. The idler rollers act to maintain alignment of the conveyor belt in either the forward or reverse directions, thus preventing erosion of the belt and the conveyor system. The invention is further directed a system for maintaining the alignment of a conveyor belt using the idler assembly, ad a method of aligning a bidirectional continuous conveyor belt.

Abstract: A method of adjusting a lateral position of an endless belt that is passed around at least two rollers, comprising the steps of: controlling a tilt position of a first roller of the at least two rollers; and adjusting a lateral position of the first roller, wherein the lateral position of the first roller is adjusted in combination with controlling the tilt position of the first roller.

Abstract: A positioning assembly is provided with an endless loop conveyor belt for transporting an object and a first and second roller (12) arranged inside the endless loop. A first mounting part connected to a first end of the first roller (12) and a second mounting part connected to a second end of the first roller (12) are independently movable in a length direction of the conveyor with respect to the frame (15). An actuator system is provided which includes a first lateral actuator (61) arranged to move at least a part of the first roller (12) in a direction parallel to the rotational axes (106) of the first roller (12). The first roller (12) is longitudinally divided into at least two longitudinal segments. The first lateral actuator (61) moves at least one of the longitudinal segments parallel to the rotational axis (106) of the first roller (12).

Abstract: A belt tracking control device for a conveyor device is provided, in particular for agricultural round balers, having at least one roller and at least one traction element which is guided over the roller and having at least one edge region which extends from the side edge of the traction element in the direction of the width thereof. At least one guide roller is provided through which the edge region can be deflected from the movement plane of the traction element.

Abstract: Aligning image transfer assembly belts using two driven image-bearing belts simultaneously engaged with a driven transport belt. Each image-bearing belt conveys image-forming marking material formed thereon, wherein the transport belt is selectively engageable by the two image-bearing belts. The selective engagement of each image-bearing belt being independent from the other, wherein the two image-bearing belts are remote from one another. The method and apparatus also output signals representing at least one detected lateral positions of an edge of a measured belt using at least one edge sensor. The detected lateral position measured can be achieved by one or two edge sensors, wherein the two edge sensors would be disposed remote from one another along an extent across which the edge of the measured belt moves. Then a skew indication of the simultaneously engaged two image-bearing belts is determined based on a the output edge sensor(s) signals.

Abstract: A substrate sheet transporting device is provided. The device includes a first transfer cylinder defining a first axis, a circumferential direction and a transverse direction and a transfer belt (74) extending around the first transfer cylinder. The first transfer cylinder includes first openings for the passage of a gas and the transfer belt includes second openings for the passage of a gas. The transfer belt and the first transfer cylinder define an alignment position in which the second passage openings are aligned with the first passage openings. The transfer device includes a device for adjusting the position of the transfer belt relative to the first transfer cylinder by bringing the transfer belt toward the alignment position. The invention is applicable to cutting devices of rotary printing presses.

Abstract: A belt positioning system for positioning a movable belt entrained about a plurality of generally parallel rollers for moving in a trans-axial direction perpendicular to an axial direction in which the rollers extend parallel to each other includes a tapered flange. The tapered flange is operatively connected to an axial end of a specific one of the plurality of generally parallel rollers, and includes a generally planar contact surface and an angled guide surface. The generally planar contact surface extends generally perpendicular to the axial direction to contact an adjoining edge of the belt. The angled guide surface extends radially outward from the contact surface and has a diameter increasing outward in the axial direction.

Abstract: A positioning assembly is provided with an endless loop conveyor belt for transporting an object and a first and second roller (12) arranged inside the endless loop. A first mounting part connected to a first end of the first roller (12) and a second mounting part connected to a second end of the first roller (12) are independently movable in a length direction of the conveyor with respect to the frame (15). An actuator system is provided which includes a first lateral actuator (61) arranged to move at least a part of the first roller (12) in a direction parallel to the rotational axes (106) of the first roller (12). The first roller (12) is longitudinally divided into at least two longitudinal segments. The first lateral actuator (61) moves at least one of the longitudinal segments parallel to the rotational axis (106) of the first roller (12).

Abstract: A conveyor belt tracking apparatus is provided for correcting the travel path of a laterally mistracking conveyor belt. In one form, an elongate tracking roller is rotatably mounted at end portions thereof to a pivotal support frame and extends across and below the belt. The pivotal support frame is mounted to a downstream pivot member so that belt mistracking toward one end portion of the tracking roller causes the one end portion to shift downstream and laterally outwardly to urge the belt toward the correct travel path. In one approach a downstream pivot connection between the pivot member and pivotal support frame is inclined upstream so that the end portion also shifts upwardly as it shifts downstream to urge the mistracking belt edge toward the correct travel path.

Abstract: A method of adjusting a lateral position of an endless belt that is passed around at least two rollers, comprising the steps of: controlling a tilt position of a first roller of the at least two rollers; and adjusting a lateral position of the first roller, wherein the lateral position of the first roller is adjusted in combination with controlling the tilt position of the first roller.

Abstract: According to aspects described herein, there is disclosed an apparatus and method for controlling a position of a belt in a printing system. The apparatus including a roller assembly for engaging at least a portion of the belt. The roller assembly extending laterally across the belt. The apparatus including a pair of laterally spaced support arms each rotatably supporting opposed ends of the roller assembly. Each support arm being pivotally coupled to the printing system for movement about a pivot axis extending substantially in the lateral direction. The apparatus also including a pair of actuating assemblies each configured to pivot a different one of the support arms about the pivot axis. The pivotal movement of each of the pair of support arms by the respective actuating assemblies being independent of the other.

Abstract: A belt meandering preventing device 1 for a running test device 2 is provided with a first control means 14, a second control means 15, and a third control means. The first control means 14 detects the position of a belt 6 and controls a drum rocking means 8 so that the difference between the detected position of the belt 6 and a predetermined target position is zero. The second control means 14 detects the amount of rocking of a driven drum 5 rocked by the drum rocking means 8 and controls the drum rocking means 8 so that the detected amount of rocking of the driven drum 5 is a target amount of rocking.

Abstract: This invention relates to a adjustment device intended for the adjustment of belts of belt conveyors and of the type that comprises a roller that is rotatable around a first axis (CR) and mounted in a cradle, which in turn is turnably mounted in a supporting stand, and, by a force generator, tiltable in relation to the stand around a second axis (CT) extending perpendicularly to the first one. According to the invention, the adjustment device comprises a transmission actuator in the form of a carriage having two guide elements, which slope in different directions. When the force generator generates a force having a first principal force component, the transmission actuator transforms the same into a force having a second principal force component, the direction of which is different from the first force component, which guarantees tilting of the cradle and thereby also the roller in relation to the stand. The transmission actuator is built-in into a space between the roller and a base part of the stand.

Abstract: An displacement correcting device is provided and includes: a rotation supporting member having a rotation shaft and rotating to support the endless belt-shaped member; a shaft supporting frame supporting a one-end supporting portion of the rotation shaft movably relative to an opposite-end supporting portion and supporting one end of the rotation shaft to be tilted about the other end; and a shaft displacing member having a rotation center disposed closer to one end portion in the axial direction than a rotation shaft supporting body and intersected by the axial direction and a rotation shaft contact portion contacting with the one end of the rotation shaft. The shaft displacing member allows the rotation shaft contact portion to rotate about the rotation center to tilt the rotation shaft when a movement sensing member detects the movement of the endless belt-shaped member to the one end of the rotation shaft.

Abstract: The present invention relates to a machine for the thermal treatment of threads, which comprises a positioning mechanism (8) and a position control mechanism (9) acting on a very short area in the immediate proximity of each sealing head. The positioning mechanism (8) includes an axle (10) for pivoting the frame (3), connected directly to the frame (3), and an actuator (11) for pivoting the frame, which is acting on said frame (3) through the intermediary of a rod linkage (12), mounted between the edge of the frame (3) and the actuator (11). The device for positioning the conveyor belt (2) during its advance in the pressurized enclosure (1) is provided, with a mechanism for holding the conveyor belt (2) at a height separation with respect to the position control mechanism (9).

Abstract: A sensor and controller for a belt moving about a path, the sensor and controller including an analog sensor including a medium that changes a characteristic to give a signal that varies continuously with any lateral belt edge position, thus yielding improved resolution of actual belt edge position, and a control mechanism responsive to the changes in characteristics of the medium for more accurate edge position control.

Abstract: According to aspects described herein, there is disclosed an apparatus and method for controlling a position of a belt in a printing system. The apparatus including a roller assembly for engaging at least a portion of a belt, a pair of laterally spaced support arms and an actuating assembly for pivotally moving at least one support arm. The belt being generally moveable in a process flow direction within the printing system, wherein a lateral direction extends substantially along the belt and substantially perpendicular to the process flow direction. The roller assembly extending laterally across the belt. The pair of laterally spaced support arms each rotatably supporting opposed ends of the roller assembly. Each support arm being pivotally coupled to the printing system for movement about a pivot axis extending substantially in the lateral direction. The pivotal movement pivoting one support arm relative to the other.

Abstract: An offset correcting device includes: an endless belt-like member having an endless belt-like shape; a rotation supporting member that has a rotation shaft in which an axial direction extends along a width direction of the endless belt-like member, and that is rotated while supporting the endless belt-like member; an interlocking member that is supported by one end portion of the rotation shaft to be movable along the axial direction, and that is capable of being contacted with a width direction edge of the endless belt-like member; and a shaft displacing member as defined herein.

Abstract: An endless belt member is suspended in a tensioned manner by a plurality of roller members including a drive roller and a drive motor drives the drive roller member so as to move the belt member in a predetermined direction of travel. A detecting unit detects an amount of displacement of the belt member in a widthwise direction of the belt member, and a correction unit that corrects displacement of the belt member in the widthwise direction. The correction unit corrects the displacement of the belt member in a widthwise direction based on data sampled by the detecting unit every time a drive signal is input to the drive motor a prescribed number of times.

Abstract: A conveyor belt tracking apparatus is provided for correcting the travel path of a laterally mistracking conveyor belt. In one form, an elongate tracking roller is rotatably mounted at end portions thereof to a pivotal support frame and extends across and below the belt. The pivotal support frame is mounted to a downstream pivot member so that belt mistracking toward one end portion of the tracking roller causes the one end portion to shift downstream and laterally outwardly to urge the belt toward the correct travel path. In one approach a downstream pivot connection between the pivot member and pivotal support frame is inclined upstream so that the end portion also shifts upwardly as it shifts downstream to urge the mistracking belt edge toward the correct travel path.

Abstract: In an aspect of the present invention, a system and method are provided that detect belt mis-tracking and in response, automatically adjusts. In some implementations, the system and method are implemented in conjunction with a weigh feeder or weigh belt. In other implementations, the system and method are implemented in conjunction with other devices that convey material via one or more belts. The system and method can be implemented by providing one or more sensors that detect belt mis-tracking, a motor for adjusting a belt pulley and one or more controllers that operate the motor in response to signals from the one or more sensors.

Abstract: A belt drive device includes a plurality of rollers and an endless belt stretched around the rollers, and configured to drive the endless belt by rotating the rollers. The belt drive device further includes a roller-shaft shifting member that shifts at least one end of a shaft of at least one roller of the above described rollers in accordance with the movement of the endless belt in the axial direction of the roller.

Abstract: A belt skew correction controlling method includes detecting a skew speed of a wound endless belt, calculating a difference between the skew speed that is acquired in the detecting of the skew speed and the initial target value, determining whether a value acquired in the calculating of the difference is within a predetermined range, maintaining an angle of a skew correcting roller that is wound around the endless belt and can be inclined in a case where the value is determined to be within the predetermined range in the determining of whether the value is within the predetermined range.

Abstract: A guide arrangement (1) for guiding webs in evacuatable web treatment installations comprises at least one guide roller (2) with an axis (5), whose spatial position is settable. To solve the problem of compensating in modular installations with several chambers either misalignments of the chambers relative to one another and/or to avoid completely adjustable roller frames, whose adjustment would require the repositioning of treatment and coating sources and of separating gaps on the circumference of coating rollers, the invention proposes that the guide roller (2) is supported between two pivot bearings (11, 12), of which at least one is adjustable relative to the other transversely to the axis (5). This is preferably carried out thereby that the adjustable pivot bearing (12) comprises a slide guide (15), fastened to a chamber wall (14), on which a slide (16) with the pivot bearing (12) is guided, and that the adjustable pivot bearing (12) comprises a remotely operated adjustment drive (21).

Abstract: In an aspect of the present invention, a system and method are provided that detect belt mis-tracking and in response, automatically adjusts. In some implementations, the system and method are implemented in conjunction with a weigh feeder or weigh belt. In other implementations, the system and method are implemented in conjunction with other devices that convey material via one or more belts. The system and method can be implemented by providing one or more sensors that detect belt mis-tracking, a motor for adjusting a belt pulley and one or more controllers that operate the motor in response to signals from the one or more sensors.

Abstract: An offset correcting device includes: an endless belt-like member having an endless belt-like shape; a rotation supporting member that has a rotation shaft in which an axial direction extends along a width direction of the endless belt-like member, and that is rotated while supporting the endless belt-like member; an interlocking member that is supported by one end portion of the rotation shaft to be movable along the axial direction, and that is capable of being contacted with a width direction edge of the endless belt-like member; and a shaft displacing member as defined herein.

Abstract: To provide a sheet conveying apparatus capable of preventing meandering of a belt. A flange roller arranged at an entrance of sheets is used for a conveying roller immediately before a flange roller for feeding conveying rollers to a first conveying path for conveying the sheets. Namely, the flange roller is arranged just closely to an upstream side of the conveying belts arranged on the flange roller in a rotational direction. Further, a flange roller arranged at an exit of the sheets is used for a conveying roller immediately after a flange roller for feeding the conveying rollers finishing conveyance of the sheets on a second conveying path for discharging the sheets. Namely, the flange roller is arranged just closely to a downstream side of the conveying belts arranged on the flange roller in the rotational direction.

Abstract: A belt including a first roller is supported by a plurality of rollers, and is driven to rotate in a predetermined direction. An abutting member makes contact with at least one edge of the belt in its width direction. A pressing member applies a pressure on an extended surface of the belt in its thickness direction at a position near a contact portion of the belt with the abutting member and on an upstream side of the contact portion in its moving direction.

Abstract: A belt unit includes a plurality of rollers including a driving roller and a driven roller; a belt being supported by the plurality of rollers; a specified roller; and a shift restraint member restraining the belt from shifting toward one end side of the specified roller. The specified roller is at least one roller of the plurality of rollers. The specified roller has such a shape that an outer diameter thereof on each of both end sides thereof is continuously enlarged toward a central part thereof in an axial direction thereof, and has such a shape that a region where the outer diameter thereof is the largest is shifted onto one end side thereof with respect to the central part thereof in the axial direction thereof within a belt suspension range.

Abstract: A belt-conveyor device includes a detecting unit that detects a belt position in a width direction of the endless belt for a plurality of times within more than a cycle of the endless belt, the width direction being a direction orthogonal to direction of travel of the endless belt; an average calculating unit that calculates an average belt position from the belt positions detected by the detecting unit; a storing unit that stores therein a plural sets of correction values and belt positions; and a meander correcting unit that corrects meander of the endless belt based on a correction value that corresponds with the average belt position in the storing unit.

Abstract: A belt driving apparatus for driving a belt has the belt hung around and between rollers, and has a meandering prevention member provided in each end part of each roller to restrict the meandering of the belt in the roller axial direction. A cut is formed to be open toward the roller end face and to extend in the roller axial direction, and a boss that fits into the cut is formed on the inner circumference of the meandering prevention member.

Abstract: A roller assembly for a belt drive system of an agricultural machine, the roller assembly having a shaft, a roller rotatably mounted on the shaft, and adjustment means for adjusting the position of the shaft. The adjustment means includes means for angular adjustment of the position of the shaft in two distinct directions.