The installation and use process of motor bearings is often overlooked, which can lead to various bearing problems such as bearing noise, heat, running circle, holding shaft, and other failures.
To provide some assistance in addressing these issues, We has summarized some of the unnoticed problems related to the bearing installation process.
Bearing storage requirements:
Bearings should not be stored directly on the ground, should be kept at least 30cm above the ground, and should be protected from direct light and cold walls.
To prevent rusting, bearings should be stored in an environment with a temperature of around 20°C and a humidity of no more than 65%. It is important to avoid placing bearings in acidic air.
Before assembly, bearings should be wiped of iron filings and dust from the mating shaft and housing to prevent rubbish from entering the inner part of the bearing and the mating part, which is a common cause of failure.
Precautions when using bearings:
Bearings should be installed in a dry and clean environment.
Preparation work should be done before installation, including using different installation methods based on bearing size and application environment, preparing the necessary parts, tools, and equipment for installation, cleaning all parts to be installed, and checking the size and shape accuracy of all parts according to drawings.
It is important not to unpack the bearings before installation preparation work is finished to prevent contamination.
When picking up bearings directly by hand, it is important to wash away sweat on hands and apply high-quality mineral oil before operation, especially during the rainy season and summer when rust prevention is crucial.
It should be noted that the corrosive effect produced by sweat differs for each person.
Some people's sweat is highly corrosive and can cause obvious rust in just 1-2 hours after contacting the bearings, while others may not show rust. Professional bearing manufacturing companies test employees' hand sweat before starting work.
Special tools should be used as much as possible, and cloth and short fiber materials should be avoided.
Soft metal material should be used as an assembly sleeve (copper or soft steel) when pressure assembly is used in the bearing inner or outer ring end face.
Heating the bearing or bearing seat to use thermal expansion to change the tight fit into a loose fit installation method is a common and labor-saving installation method.
However, it is important to hold the frame bearing heating process clean, and heating temperature should generally not exceed 120°C.
After installation, the bearing should be checked to ensure it is installed in place, rotates flexibly, and there is no stalling phenomenon. Improper bearing installation can cause the bearing temperature to rise rapidly and result in damage or even a major accident such as bearing jamming and fracture.
When installing cylindrical roller bearings, for example, NU structure, grease should be applied above the bearing compound circle and on the inner ring raceway surface to reduce damage caused by friction between the collar and roller during installation and assembly.
When filling the grease on top of the retaining ring, the grease should gather in the retaining ring groove against the outer raceway of the bearing as much as possible so that the grease can circulate normally under suitable grease filling amounts.
When the bearing and big end cover are about to be installed in place (when the nut is not tightened), rotate the rotor to allow the bearing to self-adjust to its proper position and to help form a lubricating oil film inside the bearing.
By continuing to learn about this topic, get more information about electric motors, please contact the professional manufacturer as below;
중국의 전문 전기 모터 제조업체
중국은 다양한 응용 분야를 위한 고품질의 비용 효율적인 모터를 생산하는 수많은 제조업체가 있는 글로벌 전기 모터 산업의 주요 업체입니다.
Dongchun motor는 국제 표준을 충족하고 고객의 특정 요구 사항을 준수하도록 설계 및 제작된 광범위한 전기 모터를 제공합니다.
이 회사는 맞춤형 애플리케이션을 위한 단상 및 3상 AC 모터, 브레이크 모터, 기어 모터 및 특수 모터를 포함하는 광범위한 제품 포트폴리오를 보유하고 있습니다.
