Date: 2013-08-20

SKF bearing parts and components in the production process of technical analysis

SKF bearings are superior even go form announced low low high pitched whining noise noise percussion injuries can also occur, this noise will follow the bearing speed bump and the differences.
If intermittent noise, then. Announced sharp hiss hiss sound, sound of squeaking sounds and unruly, often reveal performance continuous transfer of the bearing is in a bad situation.
For heavy load should be selected penetration small when working at high pressure lubricating grease in addition to penetration of small things, also have a high oil film strength and extreme pressure properties. When selecting a grease based on environmental conditions, calcium base grease easily soluble in water, less suitable for drying and moisture environment. Commonly used for SKF bearing greases with sodium calcium base grease grease calcium base grease of sodium aluminium base grease of lithium base grease with molybdenum disulfide grease. Number of filling grease in the bearings, to filling bearing 1/2-1/3 suitable for the internal space. High speed should be reduced to one-third when too much grease will enable increased temperature rise.
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 bearing outer ring, the more appropriate. Generally, SKF bearing temperature as bearing operation began to slowly rise, 1-2 hours later to reach a steady state. The normal temperature of the bearing due to the heat capacity of the machine, heat dissipation, speed and load to another. If lubricated, install appropriate, bearing temperature quick rise, abnormal high temperature occurs, in which case you must stop, take the necessary preventive measures.
Bearing is a sophisticated mechanical support components, user earnestly hope that SKF bearings bearings mounted on a host to scheduled use period are not damaged and to maintain its dynamic performance, but is sometimes not objective facts of expectations, sudden bearing failure accident would cause significant loss to the user. Bearing failure analysis through a large number of studies have shown that short-lived or premature loss of precision of the bearing, either due to material defects or improper manufacturing, but was due in considerable measure did not strictly follow the bearing requirements for installation, maintenance or improper selection or the actual bearing load over load rating of the bearing itself, causing damage to the bearings of irregular.
Cracking spalling occurs due to the bearing SKF bearing under cycle load, contact fatigue damage of surface can occur very easily, so in order to improve the bearing service life, must have a high level of contact fatigue strength of bearing steel.
Hardness is one of the important quality of bearing quality, on the contact fatigue strength, abrasion resistance, has had a direct impact in the elastic limit. Hardness of bearing steel under use generally reached HRC61~65, can the contact fatigue of bearing high strength and abrasion resistance properties.
Cage manufactured using the nylon 46, reduces sliding friction between the ball and cage. In addition, also eliminates the convex shape of the direction of rotation, thereby reducing the mixing losses. In addition, through the use of shapes can reduce stress when assembled, to ensure that the Assembly performance. Loss of torque on a single cage reduces the 30~40%, bearing the overall loss of torque reducing 50~65%. The company speculated that Prius will be 10 and 15 mode fuel efficiency has increased from previous 35.5km/L to 38.0km/L, improving fuel efficiency by approximately 1~2% is obtained through the use of these bearings.
SKF bearing parts in the production process, cold and hot process to go through many road, in order to meet the requirements of high-volume, high efficiency, high quality, should have good machining properties of bearing steel. For example, the properties of cold and hot forming, machining properties, hardenability, and so on.

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