Cross Cylindrical Roller Slewing Bearings RU28-manufacture,factory,supplier from China

RU cross roller bearings are also known as bearings. The main body of a rolling body usually uses cylindrical or tapered rollers to intersect a single flow path, separated by retainers or spacers, and arranged in a cross pattern. Therefore, the cross roller ring group can withstand loads in all directions, with a stiffness of 3-4 times higher than traditional models. RU cross roller bearing is lubricated by spray. Drilled shrinkage air mixes spray and lubricating oil to produce oil mist.

Slewing bearing has four series of toothless, external and internal toothed four-point contact ball bearings, double row angular contact ball bearings cross cylindrical roller bearings, cross tapered roller bearings and three row cylindrical roller composite bearings, of which four-point contact ball bearings have higher static load capacity, cross cylindrical roller has higher dynamic load capacity, The pre-interference of cross-tapered roller bearing can make the bearing have greater support rigidity and rotation accuracy.

Applications: Cross roller bearings are widely used in many fields, including machine tools, engineering machinery, medical equipment, food packaging machinery, etc. On machine tools, cross roller bearings are often used to support the spindle and the turntable to ensure the high-speed and high-load operation of the equipment.

Cross roller bearing is a special kind of rolling bearing, which is widely used in mechanical field. It is designed to meet large size equipment that needs to operate under the requirements of high load capacity, high rigidity and high rotational accuracy. The cross roller bearing is composed of inner and outer rings, rollers, sealing rings and cages, and its structural advantages are that it can withstand both radial and axial loads, with high torque rigidity and running accuracy. The following will introduce the characteristics and applications of cross roller bearings in detail.

Structural features: The roller inside the cross roller bearing is combined in a cross arrangement, which makes the bearing able to withstand both radial and axial loads. There is a certain gap between the inner and outer rings, which can make the bearing maintain high rigidity when it is subjected to high torque load, and also has good rotation accuracy and stability. The design of the seal ring and cage of the cross roller bearing is also very important, which can effectively prevent dust and foreign matter from entering the bearing interior and extend its service life.

Bearing performance: The bearing capacity of cross roller bearings is large, suitable for high-speed and high-load applications. Due to the special arrangement of rollers, the bearing can share part of the load when bearing radial and axial loads, which improves the bearing capacity and stability.

The different types of cylindrical roller bearings are designated based on their structural features and intended applications: N..EM: Cylindrical roller bearing with a standard inner ring without any ribs, suitable for radial loads. NU..EM: Bearing with aremovable inner ring and two integral flanges on the outer ring, designed for high radial loads and accommodates axialdisplacement. NJ..EM: Features a removable inner ring and one integral flange on the outer ring, primarily used for applicationswhere axial displacement is required.

Some cylindrical roller bearings have no ribs on either theinnere rings canelative to eacese can bfree-end bearingsCylindrical roller bearingouter rings has two ribs aother ringhas one ,are capable of takingxial loaone directiobearingshave high radial rigidity and are used primarily for precisionmachine tools.Types NU , N , NNU , and NN are suitable as free-end bearingsTypes NJ and NF can sustain limited axial loads in one directionTypes NH and NUP can be used as fixed-end bearingsNH-type cylindrical roller bearings consist of the Nj-type cylindricalroller bearings andHu-type Lshaped thrust co

According to whether the ring has a rib or not, NSK cylindrical roller bearings are divided into NU, NJ, NUP, N, NF and other single-row bearings, and NNU, NN double-row bearings. The bearing is a structure with separable inner ring and outer ring. Cylindrical roller bearings with inner or outer rings without rims, the inner and outer rings can be axially moved relative to each other, so they can be used as free-end bearings.

Structure:Internal Structure and Retainer Material VariationC: Symmetrical roller, Stamped Steel retainerCA: Symmetrical roller, one-pice brass cageCTN1: Symmetrical roller, nylon cageE: Third generation design.

High Rigidity Type Crossed Roller Bearing V has a solid one-piece construction for both inner and outer rings. Therefore, high accuracy and high rigidity are achieved, and mounting errors can be minimized. As separators are incorporated between the cylindrical rollers for smooth rotation, these bearings are suitable for applications where rotation speed is comparatively high.

1.Thrust cylindrical roller bearings are often combined into high-stiffness bearing configurations, which can withstand heavy loads and vibration loads without difficulty.2. this kind of bearing can bear a large axial load in a single direction, but can not bear radial load, they do not have automatic aligning ability.3. the thrust cylindrical roller bearing can be divided into thrust cylindrical roller and cage assembly, shaft ring and seat ring.4.

There are two main types of bearings widely used in industrial robots: constant cross-section thin-walled bearings and RU cross roller bearings. The bearing of an industrial robot is one of the key components suitable for the joints of industrial robots or the turntables of machining centers, robots, medical devices, measuring instruments, IC manufacturing equipment, etc., and has a wide range of uses.

The design of the roller and raceway contact line of all thrust cylindrical roller bearings is optimized to avoid the generation of edge effects.

The single-row four-point contact ball slewing bearing has the characteristics of compact structure and light weight, which makes it widely used in construction machinery. Because the steel ball and the circular raceway contact at four points, this support can bear axial force, radial force and heeling moment at the same time, with high bearing capacity and stability. Applicable scope includes rotary conveyor, welding operator, small and medium-sized cranes, excavators and other construction machinery, is a multi-functional, efficient slewing support structure.

Thrust cylindrical roller bearings are often combined into high-stiffness bearing configurations that can withstand heavy loads and vibration loads without difficulty. Such bearings can withstand large axial loads in a single direction, but they cannot withstand radial loads, and they have no automatic aligning capability.

Product Description:The S275 carbon steel coil is made of rolled steel. This roll form is easy to store and transport and takes up relatively little space.

Construction machinery bearings are widely used in various products. The following are some common construction machinery products and their bearing applications:Excavators: Excavators are heavy construction machinery used to excavate earth, stone or other materials, which cover a variety of working conditions and load requirements. Roller bearings or plain bearings that work at high loads and high speeds are usually used on excavators.Bulldozers: Bulldozers are used to bulldoze land, fill earth or push other materials, and need to withstand a large pushing force.

1. Deep groove ball bearing with dust coverDeep groove ball bearings with dust cover are divided into Z type and 2Z type. When used under environmental conditions where lubrication is difficult or lubricating oil is inconvenient, the bearing interior is usually injected with anti-rust and lubricating dual-purpose lithium based grease, and the lubrication amount is 1/4 to 1/3 of the bearing internal space.2.

FAG bearings-Deep groove ball bearings are the most popular of all ball bearing types because they have a variety of seals, dust caps, and stop ring arrangements to choose from. The groove of the bearing ferrule is an arc, slightly larger than the radius ball of the bearing ring.FAG bearings are a very famous brand.

Truck hub units, which contain two tapered roller bearings, are pre-adjusted, greased and sealed at the factory in order to simplify installation. The wheel bearing units are intended for use in truck, trailer and buses. They are designed to withstand typical harsh operating conditions and require less maintenance than the conventional wheel bearing sets they replace. Some variants have an integrated impulse ring which makes some variants suitable for use with anti-lock braking systems.

These bearings are widely used in the rotating parts of industrial robots, machine tools, medical equipment, etc., which requirecompactness, high rigidity and high rotational accuracy. In addition, bearings made of stainless steel and those with inner and outer rings provided with mounting holes are also available on request. Please contact us.Crossed Roller Bearings are compact bearings with their rollers alternately crossed at right angles to each other between inner and outer rings.

Product Description:For some industrial products with high moisture and oxidation requirements, such as precision mechanical parts, electronic products, etc., 3003 aluminum alloy coil can be used to make packaging materials.

The outer ring of the needle roller bearing is precisely stamped with thin steel plate, which has small structural space and large load capacity. It is suitable for occasions where installation space is limited and housing holes are not suitable for raceway.