1、INA轴承型号的选择：轴承型号一般是由用户的技术人员根据配套产品的使用条件及承受负荷对轴承进行选择。业务人员主要了解用户的实际负荷是否与所选轴承相符合，如果INA轴承达不到使用要求，应尽快建议客户改选型号，但除非特殊产品在选择型号上一般不会有什么问题。
1. INA Bearing Model Selection: Bearing model is generally selected by the technical personnel of the user according to the use of supporting products and bearing load. Business personnel mainly know whether the actual load of the user and the selected bearing, if the INA bearing can not meet the use requirements, should be recommended as soon as possible to change the customer model, but unless special products in the selection of model generally will not have any problems.
2、INA轴承游隙的选择：用户在购买INA轴承时一般只会告知在什么型号、等级，很少会对轴承的游隙提出要求，业务人员必须问清轴承的使用条件、其中轴承的转速、温度、配合公差都直接关系到INA轴承游隙的选择。一般在3500转/分以下转速的电机大多采用CM游隙，如高温高速电机则要求采用相对较大的游隙。INA轴承游隙在装配后会因为内孔的涨大及外圆的缩小而导致减少，游隙的减少量=过盈量×60％（轴承室是铝的除外）。比如INA轴承装配前游隙是0.01mm，装配时过盈量为0.01mm，则INA轴承装配后的游隙为0.004mm。在理论上INA轴承在零游隙时噪音和寿命都达到佳的状态，但在实际运转中考虑到温升等问题，INA轴承在装配后游隙为0.002mm-0.004mm较好。
2. INA Bearing Clearance Selection: Users in the purchase of INA bearings will generally only tell what type, grade, very few of the bearing clearance requirements, business personnel must ask about the use of bearings, bearing speed, temperature, fit tolerance are directly related to the selection of INA bearing clearance. CM clearance is usually used for motors with rotational speeds below 3500 rpm. For high-temperature and high-speed motors, relatively large clearance is required. The clearance of INA bearing will be reduced after assembly because of the expansion of the inner hole and the reduction of the outer circle. The reduction of clearance is equal to the interference *60% (except that the bearing chamber is aluminum). For example, if the clearance of INA bearing before assembly is 0.01 mm, and the interference is 0.01 mm, the clearance of INA bearing after assembly is 0.004 mm. In theory, the noise and life of INA bearings reach the best state at zero clearance, but in actual operation, the clearance of INA bearings is 0.002mm-0.004mm after assembly.
3、油脂的选择：油脂的选择一般是根据INA轴承的转速、耐温情况、噪音要求及起动力矩等方面进行选择，要求业务人员对各种油脂的性能很了解。
3. Oil selection: Oil selection is generally based on INA bearing speed, temperature resistance, noise requirements and starting torque and other aspects of the choice, requiring business personnel to understand the performance of various oils.
4、INA轴承密封型式的选择：轴承的润滑可分为油润滑和脂润滑。油润滑轴承一般是选用形式轴承，脂润滑轴承一般选用防尘盖或橡胶密封件密封。防尘盖适用于高温或使用环境好的部位，密封件分接触式密封和非接触式密封两种，接触式密封防尘性能好但起动力矩大，非接式密封起动力矩小，但密封性能没有接触式好。
4, INA bearing seal type selection: bearing lubrication can be divided into oil lubrication and grease lubrication. Oil-lubricated bearings are generally used in the form of bearings, Grease-Lubricated bearings generally choose dust cover or rubber seals. Dustproof cover is suitable for high temperature or good working environment. Seals are divided into two types: contact seal and non-contact seal. Contact seal has good dust-proof performance but large starting torque. Non-contact seal has small starting torque, but its sealing performance is not as good as contact seal.
INA轴承目前在汽车电机轴承、家电电机轴承、摩托车轴承、保健电机INA轴承等行业进行了专业化的制造，使INA轴承的噪音和寿命达到佳状态。
At present, INA bearings are specially manufactured in automotive motor bearings, household electrical motor bearings, motorcycle bearings, health motor bearings and other industries, so that the noise and life of INA bearings reach the best state.