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Import Bearing Brand >> KOYO Product List
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Combined needle roller bearings
Combined needle roller bearing is a radial needle roller bearings and thrust bearings or angular contact ball bearing combination bearing parts unit, its small size, compact structure and high rotating accuracy and can withstand very high radial load to bear a certain degree of axial load at the same time . And product mix diversity, adaptability and easy to install. Widely used in machine tools, metallurgical machinery, textile machinery and printing machinery. Combined needle roller bearings designed for use with shaft bearing raceway, the hardness of the bearings are certain requirements; or with the company specializes in the IR standard inlayed with inner ring, the hardness of the shaft is not required, and its structure will be more compact. Widely used in machine tools, metallurgical machinery, textile machinery and printing machinery and other machinery and equipment, and mechanical system design can be more compact and nimble.
Structure: This kind of bearing needle roller and thrust to the heart filled ball, or ball thrust, or thrust cylindrical roller or angular contact ball with a combination unit may bear one-way or two-way axial load. Can also be designed according to the special structural requirements.
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Spherical ball bearing outside
The spherical ball bearings is actually deep groove ball bearing a form, characteristic is its outer diameter for spherical surface, can match the concave spherical into housing in corresponding play self-aligning role.
Although its basic properties and deep groove ball bearing should be similar, but because this is mostly used in bearing of rough machinery, installation is not very precise positioning, axes and seat hole to neutral difference, or axis axial length and deflection under the condition of big etc, and bearing itself precision isn‘t high enough, some structure also is coarser, so the actual performance can compare common same specifications of deep groove ball bearings to play on a discount. For example take top of silk ball bearings used in the sphere of the poor deflection big stiffness, the bearing shaft with seals at both closely, can prevent sewage invaded, factory apply reload the lubricant, third before installation do not need to clean, do not need to add lubricant, bearing inner circle the top side of the projection on the axle wire screw fastening. Allowed axial load must not exceed 20% of the rated dynamic load.
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Deep groove ball bearings
Deep groove ball bearings rolling bearings are the most commonly used. Its simple structure, easy to use. Mainly used to bear radial load, but increases when the radial bearing clearance, with certain properties of angular contact ball bearings can handle radial and axial joint load. They should not be used in a high speed thrust ball bearings, they can be used to bear the pure axial load. With the same size compared to other types of bearings, such bearings friction coefficient is small, extreme high speed. However, the impact of intolerance, unfit to bear heavy loads. Deep groove ball bearings installed in the shaft, the axial clearance in the bearing within the shaft or housing limit the axial displacement in both directions, so you can make in a two-way axial positioning. In addition, the type of bearing is also aligning with a certain ability to tilt when compared with shell holes 2 ‘to 10‘ when still work, but has some influence on bearing life. Deep Groove Ball Bearings are mostly steel stamping ribbon cage, large multi-use vehicles bearing metal solid cage. Deep groove ball bearings are widely used in automobiles, tractors, machine tools, motors, pumps, agricultural machinery, textile, machinery, etc..
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Angle contact ball bearing
Angle contact ball bearing can be both radial load and axial load. Can work under at higher speed. Contact Angle is, the greater the axial bearing capacity is higher. High precision and high-speed bearing usually take 15 degrees contact Angle. Under the action of the axial force, contact Angle increases. Single Angle contact ball bearing can only carry axial load in one direction, in radial load, will cause additional axial force. And only limit shaft or shell in a direction of the axial displacement. If quality.the installation, make a pair of bearings, namely the outer ring relatively wide wide end, narrow face the narrow end face. So we can avoid cause additional axial force in both directions, but also in the shaft or shell limit axial clearance range. Angle contact ball bearing outer ring inside the groove because there can be in a horizontal axis relative displacement, so can both radial load and axial load - union load (single Angle contact ball bearing single direction can only carry axial load, so usually paired often adopted installed). Maintains a material has brass, synthetic resins, the bearings form, in accordance with the using conditions and divisional. Angle contact ball bearing are: 7000C type (∝ = 15 °), 7000AC type (∝ = 25 °) and 7000B ∝ = 40 °) (several types. The bearing outer ring in the lock on the mouth, generally can‘t be separated from internal and external circle and can withstand radial and axial load and a combination of direction of the axial load. Axial load capacity by contact Angle, contact Angle decision is the ability of axial load high. The bearing can restrict shaft or shell in a direction of the axial displacement.
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Thrust ball bearings
Thrust ball bearings is separated type bearings, according to its structure form into i.e.one-way thrust ball and two-way thrust ball bearings. I.e.one-way thrust ball bearings can withstand a direction of the axial load, two-way thrust ball bearings can withstand the two directions of the axial load. They are unable to bear radial load. Thrust ball bearing and insert pads structure, due to the installation of seat cushion, so bearing angled spherical shape with self-aligning performance, can reduce the influence of installation error. Thrust ball bearings are used in automobile, machine tools, etc.
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Self-aligning roller bearings
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Self-aligning roller bearings in has two groove of the inner ring and outer ring rolling sphere of dao, between the fractal roller equipped with drums of bearings. Outer ring groove of curvature of the center and bearing center with consistent, so be automatic self-aligning ball bearing the same tone heart function. In the shaft, shell buckling, can appear be automatic adjustment, not increase bearing burden. Self-aligning roller bearings can bear radial load and two direction of the axial load. Radial load capacity, apply to a heavy load, impact load conditions. Inner circle of tapered bore diameter is installed, can be directly bearing. Or use tight set sets, remove pipe shall be fitted on cylinder shaft. Keep rack stamping steel cage, polyamide forming keep frame and copper alloy system maintains a car. Self-aligning roller bearings may withstand the big radial direction load, also can withstand the axial load. Such bearing outer ring groove is spherical shape, it has self-aligning performance, when the shaft bending stress and tilt centerline and outer ring that inner circle centerline relative tilt does not exceed 1 ° ~ 2.5 °, the bearing can still work. Self-aligning roller bearings aperture has two cylindrical and cone. Conical taper of inner hole 1:1 2 or 1:30. In order to strengthen the lubrication performance, in bearing outer ring tanks and in processing the oil hole three uniform. Self-aligning roller bearings is designed to withstand heavy load and impact load, widely used in metallurgy, rolling mill, mine, petroleum, papermaking, cement, squeezed sugar, etc.
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Tapered roller bearings
Taper roller bearings are used to bear to in radial direction load primarily radial and axial joint load. Their cups are separable, tapered roller bearings easy assembling. In the process of installation and use of axial clearance can be adjusted and preloaded mounting can be made.
These bearings are separated type bearings, according to belong in the roller bearing the column number to be mounted, double row and four row circular cone roller bearings. Taper roller bearing clearance single user when installation should adjust; Double row and four row circular cone roller bearings clearance has the products leave the factory based on user requirements are given, not the user to resize.
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Cylindrical roller bearing
Cylindrical roller bearing genera, separated type bearings and snuck. Cylindrical roller bearing be mounted, double row and four columns. According to the roller bearing outfit column number with different, cylindrical roler bearings can be divided into separate, double row and multicolumn cylindrical roller bearing. Among them are widely applied to keep the aircraft single cylindrical roller bearings. In addition, still with single or double row of other structures installed roller cylindrical roller bearing. According to single cylindrical roller bearing collar divided into raised edge of n-type, NU type, floatation type, NF type and NUP type, etc. Cylindrical roller bearing radial direction load capacity, according to the structure also raised edge collar we can withstand the one-way or two-way axial load. NN by type and NNU type double row cylindrical roller bearing compact structure, strong rigidity, load carrying capacity, distortion, mostly for spindle support. FC, FCDP type FCD, four row cylindrical roler bearings may withstand the big radial direction load, more for mill, etc. heavy machinery. Cylindrical roller bearing is mainly used in motor, machine tool, oil, mill loading/unloading machine and all kinds of industrial machinery.
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Thrust roller bearings
Thrust roller bearings are used to carry axial load primarily axial and radial joint load, but shall not exceed the radial load 55% of axial load. Compared with other thrust roller bearings, such bearing friction factor is lower, speed is higher, and have self-aligning performance. 29,000 type bearings’s stick for the unsymmetrical spherical roller, can reduce roller and groove in the work relative sliding, and roller long, large diameter, roller number, load capacity, high, usually by oil lubrication, individual low-speed grease circumstance is usable.
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Joint bearing
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Joint bearing is a kind of special structure of sliding bearings. Its structure than rolling bearing simple, its main is by a spherical outside of the inner ring and outer ring inside the ball with a composed, can bear larger load, according to its different type and structure, can bear radial load, axial load or radial, axial and existing joint load. Generally used to speed the lower swing motion (namely Angle motion), with the sliding surface, also can be for spherical shape within the scope of certain Angle for tilt movement (i.e. self-aligning movement), in the axis and shaft shell holes concentricity bigger when, still can work normally. Joint bearing is a kind of special structure of sliding bearings.
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