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Smooth bearing (1)
Source: China Bearing Network Time: 2018-04-27
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The intention of the bearing is smooth:
The smooth intention of the rolling bearing is to reduce the internal conflict and wear of the bearing; to avoid burning, its smoothing effect is as follows.
(1), reduce conflicts and wear and tear.
The ferrules, the tumbler and the holder that make up the bearing touch each other; avoid metal touch; reduce conflict and wear.
(2), extended fatigue life.
The tumbling fatigue life of the bearing; in the rotation; the rolling touch surface is smooth and outstanding; then extending. Conversely; the oil viscosity is low; the smooth oil film thickness is not good;
(3), discharge conflict heat, cooling. Circulating oil supply method can discharge heat caused by conflict with oil; or heat from outside; cooling. Avoid bearing overheating; avoid aging of smooth oil itself.
(4) Others also prevent foreign matter from intruding into the bearing; or avoid rust and corrosion.
Smooth method:
The smooth method of the bearing; it is divided into smooth grease and smooth oil. In order to make the bearing perform well, first; to choose the appropriate application conditions, the application of the smooth method. If only thinking smooth; oil smooth smoothness is dominant. The grease is smooth and has the expertise to simplify the layout around the bearing; it compares the smoothness of the grease with the smoothness of the oil.
Cylindrical roller bearing cylindrical roller and track are line touch; radial load can be large; that is suitable for receiving heavy load and impact load; also suitable for high-speed rotation N-type and NU-type can be moved axially; can be used to thermal expansion or The change of the relative orientation of the shaft and the casing caused by the equipment error; the most suitable for the free end bearing NJ type and NF type can accept a certain degree of unidirectional axial load; NH type and NUP type can accept a certain degree of bidirectional axial load The ring or outer ring can be separated; it is easy to assemble and disassemble NNU type and NN type with strong rigidity against radial load; most of them are used for the first applicable frame of machine tool spindle:
Steel plate stamping bracket (Z-shaped), copper alloy cutting frame, pin-type frame, synthetic resin forming frame for primary use:
Medium and large motors, generators, internal combustion engines, gas turbines, machine tool spindles, deceleration equipment, loading and unloading transfer machinery, all kinds of industrial machinery, solid needle bearings, the inner layout of the inner ring bearing is the same as the NU type cylindrical roller bearing; The needle roller is used; the volume can be reduced. 15. The sand 惺艽缶 蚋 蚋 晌 晌 晌 谌χ岢 谌χ岢 谌χ岢 鲜 鲜 鲜 鲜 鲜 群 群 群 群 群 群 群 群 媸褂 媸褂 媸褂 媸褂 媸褂 媸褂 媸褂 媸褂 媸褂 媸褂
Steel stamping adheres to the primary use of the frame:
Automobile engine, transmission, pump, excavator track wheel, hoist, bridge crane, compressor tapered roller bearing. This type of bearing is equipped with a truncated cone roller; the roller is guided by the inner ring with large ribs to make the inner ring The one-row bearing of the raceway surface, the outer ring raceway surface and the roller tumbling surface of each conical surface intersecting the bearing intermediate line can accept radial load and one-way axial load; double-row bearing can accept radial load The two-way axial load is suitable for accepting heavy load and impact load according to the touch chest (α); it is divided into three types: small cone angle, medium cone angle and large cone angle; the larger the touch angle, the more the axial load can be. Large outer ring and inner component (inner ring and roller and self-supporting frame assembly) can be separated; easy to assemble and disassemble; rear auxiliary code "J" or "JR" bearing has world interchangeability. product
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