Spherical roller bearings

Bearings sector
Cylindrical roller bearings	Hard disc drive bearings
Spherical roller bearings	Rolling elements
Taper roller bearings	Angular contact ball bearings
Four point bearings	Deep groove ball bearings

Overview
Most spherical bearings have an outer raceway that is a portion of a sphere and as such they are internally self-aligning. Each roller has a curved form at right angles to the direction of rotation, which conforms relatively closely to the inner and outer raceways. This gives this bearing high radial load carrying capacity. Applications for these bearings include heavy support rollers, ship line shafts and rudder shafts, crankshafts, rolling mills and grinding machines.

	The surface finish of the tracks and rolling elements is critical to the running performance and noise characteristics of these bearings. Taylor Hobson have a range of Form Talysurf systems which are suitable for measuring the surface finish characteristics of spherical roller bearings. For details see the Form Talysurf links below.
Also of critical importance is the roundness and waviness of the tracks and rolling elements. Typically these features are measured using roundness instruments as detailed in the Talyrond links below.

Form Talysurf PGI Bearing Measurement Systems
Unprecendented 12.5mm gauge range with 0.8nm resolution provides simultaneous assessment of form, dimension and texture with a single traverse.

Form Talysurf Inductive systems
Key features include a precision internal straightness datum, high resolution inductive gauge with 1mm range and the industry leading µltra software.

Talyrond 290 / 280 range
Large capacity systems for highly accurate measurement of roundness and harmonics on spherical roller bearings.

Talyrond 365 / 240 range
Medium capacity systems for highly accurate measurement of roundness and harmonics on spherical roller bearings.

Talyrond 100 range
Small capacity systems for accurate measurement of roundness and harmonics on spherical roller bearings.

Along with surface texture and form there is a requirement to measure and analyse a wide number of geometric features, which include the outer track radius and the flange angles. Typically the tracks and rolling elements have defined radii which minimise the build up of peak stresses at their edge and improve radial load capacity. These features can be analysed using special geometrical software from Taylor Hobson Ltd.

For further details contact your local sales representative.