A magnetic detection module is provided so as to be selectively mountable in any of housings having a plurality of specifications having different shapes or sizes of mounting portions, and detects magnetic flux generated in the housing. The magnetic detection module includes one or more magnetic sensors that detect magnetic flux, a case in which the magnetic sensors are housed, and a cap that can be attached to an end of the case and is provided with a sealing member. The magnetic detection module can be attached to the housing of the first specification with the cap not attached to the case, and can be attached to the housing of the second specification through a sealing member with the cap attached to the case.

A rotary scale apparatus for an encoder apparatus including a planar disc on which at least one track including scale features is provided, in which the planar disc includes a hole through its centre for receiving a cylindrical shaft, and in which the rotary scale member includes at least three cantilevered spring members which are provided substantially in plane with the planar disc and spaced around the edge of the hole, for engaging with, and radially locating the disc on, a cylindrical shaft inserted therethrough.

An encoder includes a rotatable encoder disc. A clamp is fixed to the encoder disc to rotate therewith. The clamp includes an arcuately extending body presenting a radially inner face and arcuately spaced apart ends defining a gap therebetween. The inner face extends along a clamping path and engages a rotating component to secure the clamp to the rotating component to rotate therewith. The clamp includes an adjustment mechanism for modifying an arcuate extent of the gap by shifting the ends relative to one another and, in turn, modifying the clamping path. The body defines a radially extending cutout facilitating bending of the body in association with expansion or contraction of the gap and modification of the clamping path. The clamp includes a raised boss extending from a front face thereof. The boss presents a contact face spaced axially from the front face and fixedly engaging the encoder disc.

A magnetic encoder comprising an encoder element having at least two tracks of encoder regions, each region comprising a magnetic pole, the poles along each track being arranged as an alternating pattern of North and South poles, and one or more sensors, each sensor comprising one or more sensing elements associated with a respective track and generating an output that is indicative of the magnetic field associated with that track in the vicinity of the sensor, in which at least one track has a differing number of poles to at least one of the other tracks, and in which the properties of the poles of a first one of the tracks differ along the track such that there is a periodic variation along the first track of the magnetic field emitted by the first track that is detected by the sensing elements associated with the first track which at least partially cancels out a corresponding periodic variation in field from the other tracks that is also detected by the sensing elements associated with the first track.

An assembly includes a main support having integrated therein first and second fastening devices, an intermediate support and a scale, as well as third and fourth fastening devices. The scale has a measuring graduation disposed in a measuring graduation plane and adapted for position measurement in a longitudinal direction. The first fastening device is designed to hold the intermediate support on the main support at a first position such that it is longitudinally fixed, and the second fastening device is designed to hold the intermediate support at a second position such that it is freely movable in the longitudinal direction. The third fastening device is designed to hold the scale on the intermediate support at the first position such that it is longitudinally fixed, and the fourth fastening device is designed to hold the scale at a third position such that it is freely movable in the longitudinal direction.

A magnetic angular position sensor system is described herein, which includes a shaft rotatable around a rotation axis, the shaft having a soft magnetic shaft end portion. The system further includes a sensor chip spaced apart from the shaft end portion in an axial direction and defining a sensor plane, which is substantially perpendicular to the rotation axis. At least four magnetic field sensor elements are integrated in the sensor chip, with two of the magnetic field sensor elements being spaced apart from each other and are sensitive to magnetic field components in a first direction and wherein two of the magnetic field sensor elements are spaced apart from each other and are only sensitive to magnetic field components in a second direction, whereby the first and the second direction are mutually non-parallel and the first and the second direction being perpendicular to the rotation axis.

An assembly includes a rotary encoder having a shaft rotatable about an axis relative to a housing, a tolerance ring and a body accommodating the rotary encoder and the tolerance ring. The housing includes an outer wall having first and second distances from the axis in first and second sections, respectively, the first distance being greater than the second distance. The body has an opening that is: bounded radially by a first inner wall having third and fourth distances from the axis in third and fourth sections, the fourth distance being greater than the third distance; and bounded by a second inner wall which forms an axial stop for the housing. The tolerance ring surrounds the housing and is positioned within the opening such that it is disposed radially between the first and fourth sections and between the second and third sections, and is radially clamped.

An encoder for detecting rotation information of a first rotation shaft includes a first detector which detects a pattern provided in the first rotation shaft, a first housing case which houses the pattern provided in the first rotation shaft and the first detector, a second housing case which houses at least a part of a shaft portion different from a portion where the pattern is provided, of the first rotation shaft, and an adjusting mechanism which adjusts at least one of an atmospheric pressure and a temperature in the first housing case to be higher than at least one of an atmospheric pressure and a temperature in the second housing case. The inflow of the high-humidity air from a motor into the encoder is prevented or suppressed, so that the condensation in the encoder can be prevented or suppressed.

Provided is a rotational positioning device capable of positioning a rotational angle at a target angle position with high precision. A rotational positioning device is provided with: a housing; a rotational member which is rotatable about a rotational member axial line and at least a part of which is accommodated in the housing; and at least one sensor installed in the housing. A graduated scale with a plurality of scale marks is formed integrally with the rotational member along the circumferential direction of the rotational member. The at least one sensor detects an angle change amount due to rotation of the rotational member on the basis of the plurality of scale marks. The rotational member is positioned at the target angle position on the basis of the angle change amount.

The bearing provides a first ring and a second ring centered on an axis, each of the first and second rings being provided with an outer cylindrical surface, with an inner cylindrical surface, and with lateral faces that axially delimit the outer and inner cylindrical surface. One of the inner and outer cylindrical surfaces and/or one of the lateral faces of the first ring includes a textured area provided with a groove extending circumferentially and with two protrusions disposed one on each side of the groove and extending along the groove.