Tapered Roller Bearings
Linqing Tuocheng Bearing Co., Ltd： You Professional Tapered Roller Bearing Manufacturer!
Linqing Tuocheng Bearing Co., Ltd. was established in June 2002 and is located in Panzhuang Town, Linqing City, Liaocheng City, Shandong Province. It has been committed to the research and development, production, sales and service of high-quality bearings. Each bearing produced by the company is developed from the requirements of safety, high temperature resistance and wear resistance. The company's products are exported to more than a dozen countries such as Russia, Lithuania, Iran, and Dubai.
Rich Product Variety
Our company can produce self-aligning ball bearings, Spherical Roller Bearing CA Series, Spherical Roller Bearing MA Series, Spherical Roller CC Series and Spherical Roller Bearing MB Series
Wide Range of Product Uses
Our tapered roller bearings are often used in applications where there is a requirement for heavy-duty operation. These include earth moving equipment, mining machines, industrial machinery, construction vehicles, marine vessels, wind turbines, and so on.
Quality Guaranteed
Our tapered roller bearings are rigorously tested to ensure durability and long-lasting performance.With our advanced technology and manufacturing equipment,They are developed from several safety, high temperature resistance, wear resistance and other requirements.
Leading Service
We have many years of industry experience and a comprehensive production management, quality supervision, sales service operation system. Whether you want to purchase spontaneous tiles or reflective paint, simply send your requirements via email and we can customize the product for you.
Related Product Introduction
Roller bearing is a type of rolling element bearing that uses cylindrical rollers instead of spherical ones. It is one of the types of rolling bearings. Usually, cylindrical bearings can withstand larger radial loads. They bear greater loads than ball bearings.
The rolling element is a radial rolling bearing with cylindrical rollers. The internal structure of cylindrical roller bearings adopts parallel arrangement of rollers, with spacers or isolation blocks installed between the rollers to prevent tilting or friction between the rollers, effectively preventing an increase in rotational torque.
Thrust Spherical Roller Bearings
Thrust self-aligning roller bearings can adjust the angle and compensate for the misalignment between the shaft and bearing seat caused by the concave raceway profiles of the shaft ring and seat ring, as well as asymmetric drum shaped rollers. This type of bearing can withstand very high axial and radial forces from a single direction, and is suitable for relatively high speeds under high loads. The cage roller assembly and shaft ring are self retaining, so they can be installed separately from the seat ring.
Double Row Tapered Roller Bearings
Double row tapered roller bearings can adapt to axial loads in two directions and radial heavy loads according to specific designs, and are commonly used in gearboxes, lifting equipment, steel mills, and mining machinery.
Product Features In order to obtain low friction torque, high rigidity, and good rotation accuracy of the bearing, steel balls with small outer diameters are used. The use of hollow shafts ensures light weight and space for wiring.
Product Features In order to obtain low friction torque, high rigidity, and good rotation accuracy of the bearing, steel balls with small outer diameters are used. The use of hollow shafts ensures light weight and space for wiring.
In the past 40 years, new mechanical parts have gradually emerged around the world. It consists of inner and outer rings, rolling elements, etc. The slewing bearings produced in my country are mainly introduced by the Tianjin Construction Machinery Research Institute designated by the Ministry of Machinery Industry in the early 1980s.
According to whether the ring has ribs or not, it can be divided into single row cylindrical roller bearings such as NU, NJ, NUP, N, NF, and double row cylindrical roller bearings such as NNU and NN. The bearing is a structure in which the inner ring and the outer ring can be separated.
What is Tapered Roller Bearing
Tapered roller bearings belong to separable bearings, and both the inner and outer rings of the bearing have tapered raceways. This type of bearing is divided into different structural types such as single row, double row, and four row tapered roller bearings according to the number of roller rows installed. Single row tapered roller bearings can withstand radial loads and unidirectional axial loads. When a bearing is subjected to radial load, an axial force component will be generated, so another bearing that can withstand the opposite axial force is needed to balance it.
Features of Tapered Roller Bearings
Compensation of Angular Misalignments
The modified line contact between the tapered rollers and the raceways ensures optimum stress distribution at the contact points and prevents stress increases at the edges. As a result, the bearings can tolerate certain angular misalignments and give better support of moment loads.
Minimum Load
In order that no slippage occurs between the contact partners, the tapered roller bearings must be constantly subjected to a sufficiently high load. Based on experience, a minimum radial load of the order of P ＞ C0r/60 is thus necessary. In most cases, however, the radial load is already higher than the requisite minimum load due to the weight of the supported parts and the external forces.
Hardness
Hardness is one of the important qualities of bearing quality, which has indirect influence on contact fatigue strength, wear resistance and elastic limit. The hardness of bearing steel under application conditions shall reach HRC61~65, which enables the bearing to obtain high contact fatigue strength and wear resistance.
Load Carrying Capacity
Single row tapered roller bearings can support axial loads in one direction and high radial loads Figure and Figure. However, they must always be axially adjusted against a second bearing fitted in a mirror image arrangement. This bearing combination is then fitted in an O or X arrangement.
Type of Tapered Roller Bearings
Single Row Cylindrical Roller Bearings
N, NU type
The outer ring of the N-type bearing has no ribs, and there are ribs on both sides of the inner ring. Displacement in both axial directions between the shaft and the bearing housing can be allowed. The NU type bearing has ribs on both sides of the outer ring and no ribs on the inner ring. It is also possible to allow displacement of the shaft relative to the bearing housing in both axial directions. Therefore, this type of structure is suitable for use as a loose end bearing.
NJ, NF type
NJ type bearings have ribs on both sides of the outer ring, and ribs on one side of the inner ring. Can withstand a certain amount of unidirectional axial load. NF type has ribs on one side of the outer ring and ribs on both sides of the inner ring. It can also bear a certain amount of unidirectional axial load. Therefore, this type of structure is suitable for use as a unidirectional axial locating bearing.
NUP, NFP type
NUP type bearings have ribs on both sides of the outer ring, a (fixed) single rib on one side of the inner ring, and a separable flat rib on the other side. Can withstand a certain amount of bidirectional axial load.
The bearing outer ring of the NFP type has a (fixed) single rib on one side, and a separable flat rib on the other side, with ribs on both sides of the inner ring. It can also withstand a certain amount of bidirectional axial load. This type of structural bearing can limit the displacement of the shaft relative to the bearing seat in both axial directions. Therefore, it is suitable for use as a fixed end bearing.
NH (NJ+HJ) type
The NH type bearing is the combination of the NJ type bearing and the HJ type inclined retaining ring. Because the inner ring of the NUP type bearing is short, and the flat retaining ring is not fixed, it is inconvenient to use, while the NH type bearing can use the width of the entire inner ring of the NJ type bearing to maintain a tighter fit with the shaft. Moreover, the NH type bearing is more convenient to install and disassemble.NH type bearings can limit the displacement of the shaft relative to the bearing seat in both axial directions. Therefore, it is suitable for use as a fixed end bearing.
How to Choose Tapered Roller Bearings
Tapered roller bearings are the most common solution when interfacing with combined forces, especially changing ones.
Non-combination Forces
Ball bearings and other simpler alternatives have less friction overall and are likely sufficient for non-specialty purposes that lack combination forces or a need for high surface-area contact.
Combination Forces
A combination of axial and radial loads almost always requires a tapered roller bearing.
Determining load capacity: The contact angle determines the load capacity, so it's essential to decide the load angles a bearing will handle. For heavy-duty applications, multi-row tapered bearings are necessary for combination loads. With lighter forces, one is often enough.
Determining Contact Angles
The contact angle between a component and the bearing will determine the outer ring raceway angle. More significant contact angles translate to higher axial load capacities and vice versa. When selecting the correct tapered bearing for your needs, you'll see this angle often expressed with the coefficient 'e'; higher values indicate both greater contact angles and axial load-bearing capacity.
Advantage of Tapered Roller Bearings
High Reliability
Tapered roller bearings are highly reliable when used correctly. Automobiles can run for hundreds of thousands of miles without experiencing tapered bearing failures, requiring little-to-no maintenance.
Combined and Varied Loads
Tapered roller bearings have clear advantages over spherical, cylindrical, and needle roller bearings when handling combined and varied loads due to their geometry.
Load Bearing Capacity
Tapered bearings can support pure axial and radial load.The axial load carrying capacity of tapered roller bearings increases with increasing contact angle α. The size of the contact angle, which is usually between 10° and 30°, is related to the calculation factor e (from the product table): the larger the value of e, the larger the contact angle.
Minimum Load Requirement
The rollers are very unlikely to slide or 'skid' when loaded or unloaded; other roller bearings have minimal load requirements – a consistent amount of pressure that must be maintained – to prevent the rollers from sliding within their raceways.
Installation of Tapered Roller Bearings
First, the fit between the inner ring and the roll neck of a four row tapered roller bearing is generally with clearance. When installing, first install the bearing into the bearing box, and then install the bearing box into the shaft neck. Second, the outer ring of the four row tapered roller bearing and the bearing housing hole also adopt dynamic fit. First, install the outer ring A into the bearing housing. When leaving the factory, the characters {HotTag} symbol are printed on the outer ring, inner ring, and inner and outer spacers. During installation, they must be installed in the bearing housing in the order of the character symbols. Cannot be interchanged arbitrarily to prevent changes in bearing clearance. Third, after all the parts are installed in the bearing box, align the inner ring with the inner spacer and the outer ring with the outer spacer axially. Fourth, measure the gap width between the outer ring end face and the bearing housing cover plate to determine the thickness of the corresponding sealing gasket.
Maintenance of Tapered Roller Bearings
Tapered roller bearings, if cared for properly, will provide excellent service and long life, often outlasting the machine they're attached to. The following tips are all you need to keep them rolling along! The keys to long wheel bearing life are cleanliness, grease, and preload. These three areas are intrinsically linked but need to be examined separately.
It is not uncommon to see a trailer or wagon with the bearing grease cap either missing or damaged. The grease cap serves the dual purpose of keeping dirt and moisture from the bearing that would accelerate wear and also keeping any grease that might liquefy due to heat from escaping.
If the grease softens, it will be stored in the cap with the potential to work back into the rollers as it solidifies and the wheel is set in motion. The grease cap should fit snuggly, be fully seated against the hub, and be of good integrity. Wheel bearings need to be serviced. This entails being removed, chemically cleaned, and allowed to dry naturally. The roller, cage, rings, and race must be carefully examined for wear, pitting, or discoloration, and then repacked with the proper grease.
The quickest and easiest way to grease a wheel bearing is with a bearing-packing tool. This device works either through hand or by air pressure to force the grease up into the cavities between the rollers, cage, and inner and outer rings. When packed properly, the grease will be forced out between the rollers and cage and extruded on the side where the rollers meet the inner and outer rings.
Application of Tapered Roller Bearing
Tapered roller bearings mainly bear radial and axial combined loads. The bearing capacity depends on the raceway angle of the outer ring, and the larger the angle, the greater the bearing capacity. This type of bearing belongs to the separated type bearing, which is divided into single row, double row, and four row tapered roller bearings according to the number of rolling elements in the bearing. The clearance of single row tapered roller bearings needs to be adjusted by the user during installation; The clearance of double row and four row tapered roller bearings is given according to user requirements at the time of product delivery and does not require user adjustment.
Tapered roller bearings have tapered inner and outer raceway, with tapered rollers arranged between the two. All projection lines of tapered surfaces converge at the same point on the bearing axis. This design makes tapered roller bearings particularly suitable for withstanding composite (radial and axial) loads. The axial load capacity of bearings is largely determined by the contact angle α; The larger the alpha angle, the higher the axial load capacity. The angle size is represented by the calculation coefficient e; The larger the value of e, the greater the contact angle, and the greater the applicability of the bearing to withstand axial loads.
Tapered roller bearings are usually of the separated type, which means that the tapered inner ring assembly consisting of rollers and cage components can be installed separately from the tapered outer ring (outer ring).
Tapered roller bearings are widely used in industries such as automobiles, rolling mills, mining, metallurgy, and plastic machinery.
Our certificate
Frequently Asked Questions
Hot Tags: tapered roller bearings, China tapered roller bearings manufacturers, suppliers, factory, bearing high speed, 25x62x15 bearing, skf split spherical roller bearings, roller bush bearing, full complement cylindrical roller bearings, single row deep groove ball bearing
Previous
Cylindrical Roller BearingsNext
Roller BearingsYou Might Also Like
Send Inquiry