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Roughness, Roundness and Form analysis

Roughness, Roundness and Form analysis

Characterization of surface topography is important in applications involving friction, lubrication and wear. Generally it has been found that friction increases with average roughness. An accurate knowledge of the expected bearing life is essential to the proper selection of ball bearings. Bearings principally fail due to fatigue if they are properly lubricated, mounted and sealed against dirt entry.......


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Noise and vibration testing for bearings

Noise and vibration testing for bearings

A noisy application might be caused by wavy bearing components, local defects in the rings and balls or by dirt particles in the bearing. While basic requirements for a bearing such as stiffness, load capacity, speed limit and service life play a critical role in applications, low noise and vibration are even more important. All of these quality issues for bearings can be tested with the following bearing vibration equipment: SN-X, S9912-X.......


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Hardness Testing for bearings

Hardness Testing for bearings

Hardness is the property of a material that enables it to resist plastic deformation, usually by penetration. Hardness is not an intrinsic material property dictated by precise definitions in terms of fundamental units of mass, length and time. A hardness property value is the result of a defined measurement procedure. The hardness test of bearing surfaces is conducted with the SHR-3000 tester using the Rockwell hardness test method......


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Axial & Radial Internal Clearance testing for bearings

Axial & Radial Internal Clearance testing for bearings

can be moved in relation to the other in the radial direction (radial internal clearance) or in the axial direction (axial internal clearance). Too little or too much internal clearance will significantly influence factors such as heat, vibration, noise and fatigue life. In extreme applications that produce high or low temperatures, this clearance needs to be considered in the overall design to compensate for thermal expansion and contraction of housings and shafts.....


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Materials testing for bearings rings and rolling elements

Materials testing for bearings rings and rolling elements

There are essentially two choices for the material used in ball bearings - chrome steel or stainless steel. Since the material plays a major part in the performance of a bearing in any given application, it is very important to use the correct material. Note that the specified material applies to the load-bearing components only - the rings and the balls. The retainer and the shields, if used, are usually made from a different material and are subject to separate specifications.....


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Dimension measuring for bearings parts

Dimension measuring for bearings parts

The Universal Length Measurer (ULM) is a kind of length measuring instrument that integrates fine mechanics, an optical system and electrical parts into an organic whole. This instrument is used for direct measurement and comparative measurement for dimensions of parts and components. It also offers additional equipment for carrying out various special measurements.Bearing “tolerances”, or dimensional accuracy and running accuracy.....


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Bearings life and grease leakage testing

Bearings life and grease leakage testing

Bearings are run to failure, using accelerated speeds and loads and continuous vibration monitoring. Bearing life testing confirms that any changes to components, materials or the manufacturing process will not negatively impact the bearing's characteristics.Proper lubrication is a crucial factor in maximizing bearing service life....


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