NSK bearings is superior to take shape will announce the muffled whining sound percussion scars can also occur in noise, the noise will follow the Thin-walled bearing speed bump and differences.
If intermittent noise, permeability. If announced a sharp hissing sound, squeaky voice and other irregular sound, often revealed performance bearing is bad even turn.
The grease pressure heavy load should be selected penetration small when working in addition to penetration of small things, but also have high oil film strength and extreme pressure properties. According to the selection of grease environmental condition, calcium base grease is not soluble in water, and is suitable for drying and less water environment. Grease NSK bearings are commonly used calcium base grease sodium base grease calcium sodium grease lithium grease aluminum base grease or molybdenum disulfide grease. The number of bearing grease filling, the filling bearing 1/2-1/3 suitable for the internal space. High speed should be reduced grease to 1/3 too much will make the temperature rise.
The temperature of the bearing, general bearing outside of room temperature can be speculated that, if the uses of oil hole can directly measure the temperature of thin wall bearing outer ring, the more appropriate. Usually, the NSK temperature of the bearing with the bearing running slowly rising, reach a steady state after 1-2 hours. The normal temperature of the bearing for machine heat capacity, heat capacity, speed and load and different. If the lubrication, install appropriate, bearing temperature quick rise, abnormal high temperature, then we must stop, take the necessary preventive measures.
Bearing is a sophisticated mechanical support components, bearings NSK bearings user sincere hope mounted on a host to scheduled use period are not damaged and to maintain its dynamic performance, but the fact is sometimes not just as one wishes, failure will give users caused heavy loss to sudden bearing. Through a large number of bearing failure analysis and study show that, bearing longevity shortening or premature loss of precision, either due to material defects or improper manufacturing, but to a large extent, is due to not strictly in accordance with the bearing requirements for installation, maintenance, or is the reason of bearing improper selection or actual load exceeds the rated load of Thin-walled bearing itself abnormal damage of bearing.
Bearing spalling because of NSK bearings under cycle load, the contact surface is prone to fatigue damage, so in order to improve the service life of the bearings, bearing steel must have a high level of contact fatigue strength.
Hardness is one of the most important quality of the bearing quality, have a direct effect on the contact fatigue strength, wear resistance, the elastic limit. Hardness of the thin wall bearing steel under used to achieve HRC61~65, can make the bearing high contact fatigue strength and wear resistance.
The retainer adopts nylon 46 production, reduce the ball and keep the sliding friction between the two. In addition, also eliminates the concave-convex shape the direction of rotation, thereby reducing the mixing loss. In addition, through the use of slow assembling stress shape, to ensure that the assembly properties. A single holding torque loss frame is reduced by 30 ~ 40%, the overall loss torque of Thin-walled bearing was reduced by 50 ~ 65%. The company that, Prius will 10 mode and 15 mode increased fuel efficiency from the previous 35.5km/L to 38.0km/L, which improve fuel efficiency of about 1 ~ 2% is obtained by using this kind of bearing.
NSK bearing parts in the production process, to go through many cold, heat processing, in order to satisfy the mass, high efficiency, high quality, thin wall bearing steel should have good processing properties. For example, cold, hot forming properties, machinability, hardenability.