Bearing type selection
All kinds of rolling bearing with different characteristics, suitable for different usage of various kinds of machinery. Usually the following factors should be considered when choosing a bearing type. : generally choose when to withstand a load thrust thrust bearings, angular contact bearings for high speed applications typically use ball bearings, under heavy radial load, using roller bearing. In a word, using personnel from different manufacturers, many of the bearing products, choose the appropriate type.
Bearing of machinery space and location in mechanical design, generally make sure of the size of the shaft, then choose rolling bearing according to the size of the shaft. Using ball bearing is usually small axis, the axis selects roller bearings.
However, when the diameter of the bearing in the machine direction is restricted, choose needle roller bearing, special light and ultra light series of ball or roller bearings; When the bearing in the axial position of the machine is restricted, can choose a narrow, narrow range of ball or roller bearings. Bearing the load size, direction and nature of the load is bearing the most important factor. Roller bearing is used to carry heavy load, the ball bearing used in light or medium under load, carburizing steel bearing manufacturing or bainite hardening, can withstand the shock and vibration load. In the direction of the load, under pure radial load, can choose deep groove ball bearings, cylindrical roller bearing or needle roller bearing. Small pure axial load, can choose the thrust ball bearings; Under high pure axial load, can choose thrust roller bearings. When load bearing radial and axial, angular contact ball bearing is generally selected or tapered roller bearing. Of bearing performance when the centerline of shaft and bearing seat centerline, Angle error, or because of the axis of two bearing span larger axial rigidity with smaller, easily bending stress or tilted, can choose good self-aligning properties of self-aligning ball or spherical roller bearings, as well as outside of the ball bearing. Such bearing on the shaft bent slightly tilted or circumstances, to maintain a normal work. Bearing self-aligning performance is good or bad, related to its promise not coaxial degree, coaxial degree value is larger, the heart performance better. Bearing rigidity, refers to the size of bearing force needed to generate unit deformation.
The elastic deformation of rolling bearings is small, can need not consider in most mechanical, but in some machinery, such as spindle, bearing rigidity is an important factor, generally should choose the cylindrical and conical roller bearing. Because of these two kinds of bearing under the load, the rolling element and raceway belongs to the point contact, poor rigidity. In addition, all kinds of bearing can also through the preloaded, achieve the goal of increasing bearing rigidity. Such as angular contact ball bearings and tapered roller bearings, to prevent the vibration of the shaft, increase the bearing stiffness, often impose certain axial force in advance when installation, make its mutual pressure. Noted here that the amount is too large. Is too large, will make bearing friction increases, higher temperature rise, affect the service life of the bearing. Bearing the speed of each bearing type has its own limit speed, it is by physical characteristics such as size, type and structure are determined, the limit speed refers to the maximum operating speed bearing (usually use r/min), exceed this limit will result in bearing temperature rise, the dry lubricant, even make bearing jammed. Use the occasion required.



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Add:Taiyang Industry Park,Wafangdian,China.
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Add:Taiyang Industry Park,Wafangdian,China.
Tel: +86-411-85596616
Fax: +86-411-85589007
Add:Taiyang Industry Park,Wafangdian,China.
Tel: +86-411-85596616
Fax: +86-411-85589007
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