We have a strong ability of self-supporting products. The main raw materials such as internal and external rings are made from domestic suppliers of good PA12 materials, which are directly processed and manufactured by affiliated or participating enterprises, etc., thus extending the industrial chain, so as to ensure the quality and improve the competitiveness of enterprises. We have the domestic first-class grinding and assembly automatic line, using the most advanced CNC automatic grinding equipment, automatic measuring instrument, automatic sleeve instrument, automatic fat filling capping machine, automatic packaging machine and other equipment. We have built domestic advanced heat treatment production line and grinding cleaning centralized circulation filtration system, to ensure the quality of bearing products, with the most humane, scientific, intensive management mode to ensure the development of enterprises, sustainable operation to achieve value.
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| Mill over automatic production line | Automatic grinding over automatic production equipment | Assemble automatic wiring equipment | Carbonitriding heat treatment line |
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| Automatic measuring equipment | Fully automatic assembly line | Hydrocarbon ultrasonic cleaning equipment | Hydrocarbon ultrasonic cleaning equipment |
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. Fatigue strongly correlates with the surface roughness. One of the most important fundamental forms for engineering components is the circular cross-section. Circular forms arise in many applications, particularly in bearing surfaces. Roughness, roundness and bearing forms’ testers are critically important elements in the development of precision-tolerance capabilities.
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. Spectral masks help to optimize the bearing performance in the particular customer application. With some experience, the measurement results of these machines can also be used by experts to detect imperfect manufacturing steps. The introduction of a worldwide calibration system enables vibration equipment to operate according to international standards.
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.
Axial & Radial Internal Clearance testing for bearings
A bearing’s internal clearance is defined as the total distance in which one bearing ring 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. Bearings having an internal clearance other than Normal are identified by the suffixes C1 to C5.
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, are regulated by ISO standards. For dimensional accuracy, these standards prescribe the tolerances necessary when installing bearings on shafts or in housings. Running accuracy is defined as the allowable limits for bearing runout during operation. Dimensional accuracy constitutes the acceptable values for bore diameter, outer diameter, assembled bearing width and bore diameter uniformity in chamfer dimensions, allowable inner ring tapered bore deviation and shape error. Average bore diameter variation, outer diameter variation, average outer diameter unevenness as well as raceway width and height variation (for thrust bearings) are also included. Running accuracy constitutes the acceptable values for inner and outer ring radial runout and axial runout, inner ring side runout and outer ring outer diameter runout. All these dimensions of the bearing parts are measured with high-quality equipment.
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. Contamination can have a great impact on the grease service life and the bearing service life itself.