Engineering

If the minimum load requirements are not met, sliding can occur and generates excessive heat and noise. In addition, loose fit between bearing and rotor can also have a detrimental effect on bearing performance because of sliding. Adequate load and correct fit selection are essential in preventing skidding.

Insulated bearing with a layer of PPS insulating resin material coating on the width and the outer ring has the characteristics such as anti-corrosion, high reliability, cost-effective and can mainly be applied to PWM controlled motor.

Proper maintenance and handling of bearings are essential, directly affecting their longevity and performance. For bearings, corrosion is an often undetected and natural enemy. Even though stainless and chrome steel bearings are designed to be corrosion-resistant, they aren’t immune to rusting. Over time, metal components tend to rust and corrode during storage when it comes in contact with water and air, exceptionally more rapid and severe in a humid climate. Likewise, if bearings are exposed to moisture, corrosion will occur, drastically reducing their lifespan. Moreover, when handling bearings, ensure you wear gloves. Bearings should never be taken with bare hands as sweat on your hands, water, or other contaminants can cause corrosion.

Contact area between bearing raceway and rolling elements surface is quite small. If an impact force was applied to the bearing, certain indentations will occur and bearing noise shall be observed accordingly.

TPI bearings are well-known and widely used in bicycle industry. For example, the hubs and wheelsets of Rio 2016 Olympic championship bicycle was supplied by a Swiss high-end bicycle component manufacturer who has long term cooperation with TPI. TPI has four core technologies in bicycle industry and they are as follows:

Characteristics of three types of cages as shown in Table 1. below.

SUJ2 is the standard bearing steel while 2A and UL represent SUJ2 treated with carbonitriding and ultra-clean process separately.

Based on years of bearing design and manufacturing experience, TPI is able to analyze the causes of bearing damage and failure. In previous technical paragraphs, effective solutions for different types of bearing failure were provided. According to the bearing investigation done by TPI, the top bearing failure causes would be, 1. Indentations from particles, 2. Deformation by misassembling, 3. Poor precision of shaft and housing. The percentage of each causes as shown below.

How: Incorrect mounting method and mounting tool defect may lead to an overload force between bearing rings and rolling elements. This will cause a certain indentation on bearing raceway and rolling elements surface.