A device of or attached to a roller body determines a rotational frequency of the roller body (or other object) rotating about an axis of rotation includes an acceleration sensor that detects an acceleration signal of an acceleration in a first direction extending in a radial or tangential direction to the axis of rotation of the roller body; and an electronic processing unit and configured to low-pass and high-pass, particularly adaptively high-pass filter, the detected acceleration signal, perform a derivation, with respect to time, of the filtered signal, optimize the signal with a subsequent absolute-amount generation and with moving averaging, and ascertain a frequency of the filtered acceleration signal, which corresponds to the rotational frequency of the roller body.

A sensor bearing assembly includes a bearing having an inner ring and an outer ring centered on an axis, an impulse ring secured to the outer ring of the bearing, and a sensor device for detecting rotational parameters of the impulse ring. The sensor device includes a sensor housing and at least one sensor element supported by the sensor housing and cooperating with the impulse ring. An annular spacer is configured to axially abut against a lateral face of the inner ring of the bearing and the sensor housing is secured to the spacer. An outer diameter of the sensor housing is less than or equal to an outer diameter of the outer ring.

A wheel hub bearing for motor vehicles including a rotatable hub provided with a flange for the engagement of the hub to a wheel of a vehicle and provided with a radially outer free portion and a bearing unit provided with a radially outer ring for the engagement of the wheel hub bearing to a knuckle of the vehicle and a radially inner rotatable ring angularly connected to the hub. Furthermore, the wheel hub bearing has a device for detecting a vehicle parameter and provided with an encoder and a sensor in communication with the encoder. The encoder is ridgidly coupled to the radially outer free portion of the flange to jointly rotate with the hub.

A wheel assembly including a sensor for measuring wheel movement is provided comprising: a frame member; an axle fixed to the frame member; a wheel rotatably mounted to the axle and comprising wheel recess; a code ring located within the wheel recess for rotation with the wheel; and a sensor device coupled to the frame member and located adjacent to the code ring. The sensor device senses movement of the code ring and generates an output signal indicative of the wheel movement. A materials handling vehicle comprising the wheel assembly is also provided.

An encoder for a wheel bearing includes a carrier plate ring and a magnetic encoding ring. The carrier plate ring has a radially running first leg, and an axially running second leg arranged on an outer ring or on an inner ring of the wheel bearing. The carrier plate ring has, on the radially running first leg, cut-outs distributed over its circumference. The first leg has a fold for forming a folded portion, and the folded portion at least partly covers the cut-outs. The carrier plate ring is at least partly surrounded by the magnetic encoding ring. The encoding ring has unipolar magnetization and at least partly comes into contact in the cut-outs.

An encoder includes a base section, a spindle gear attached to a turning shaft section, a counter-shaft gear configured to mesh with the spindle gear and including a cylindrical gear section, a magnet provided in the counter-shaft gear, and an annular bearing member provided in the base section and configured to support the counter-shaft gear. When a straight line extending along the shaft section is represented as a first axis and a straight line orthogonal to the first axis is represented as a second axis, the magnet is disposed to overlap the bearing member in a plan view from a direction in which the second axis extends.

A sensor bearing unit includes a bearing having a first ring and a second ring centered on an axis, an impulse ring secured to the first ring and a sensor device secured to the second ring for detecting rotational parameters of the impulse ring. The impulse ring is secured into a groove formed on a cylindrical surface of the first ring which is located radially on a side of the first ring opposite the second ring.

A sensor bearing assembly includes a bearing having an inner ring and an outer ring centered on an axis, an impulse ring secured to the outer ring of the bearing, and a sensor device for detecting rotational parameters of the impulse ring. The sensor device includes a sensor housing and at least one sensor element supported by the sensor housing and cooperating with the impulse ring. An annular spacer is configured to axially abut against a lateral face of the inner ring of the bearing and the sensor housing is secured to the spacer. An outer diameter of the sensor housing is less than or equal to an outer diameter of the outer ring.

A mechanical system includes a sensor bearing unit and a fixed support part. The sensor bearing unit includes a bearing including a first ring and a second ring centered on an axis, an impulse ring secured to the first ring of the bearing, and a sensor device for detecting rotational parameters of the impulse ring. The sensor device has a sensor housing secured to the second ring of the bearing and a cable output that extends radially and is located circumferentially two spaced protrusions of the fixed support part.

A sensing device for vehicle includes a first sensing part configured to sense first information related to a wheel to generate a first signal; a second sensing part configured to sense second information related to the wheel to generating a second signal; a first insert to which the first sensing part is fixed; a second insert to which the second sensing part is fixed, the second insert being coupled to the first insert; at least one first connection part connected to the first sensing part and configured to supply a first power to the first sensing part or to transmit the first signal; at least one second connection part connected to the second sensing part and configured to supply a second power to the second sensing part or to transmit the second signal; and a body configured to accommodate the first and second sensing parts therein.