Cylindrical Roller Bearings

Cylindrical rollers and raceways are linear contact bearings. Load capacity, mainly bear radial load. The friction between the rolling element and the retaining edge of the ring is small, suitable for high-speed rotation. According to whether the ring has ribs, 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 has a separable structure with inner ring and outer ring.

Product Features

• Without the cage design, higher radial rating bearing capacity.
• The optimized design of the roller and raceway contact profile extend the bearing life and makes reliable operation.
• Applicable in medium and low speed.

Applications

Medium and large motors, generators, internal combustion engines, gas turbines, machine tool spindles, reduction gears, loading and unloading handling machinery, and various industrial machinery.

Single Row Cylindrical Roller Bearings

Double Row Cylindrical Roller Bearings

Four Row Cylindrical Roller Bearings

Single Row Full Complement Cylindrical Roller Bearings

Double Row Full Complement Cylindrical Roller Bearings

Sealed Double Row Full Complement Cylindrical Roller Bearings
Tapered Roller Bearings

Tapered roller bearings are specially designed to withstand combined (radial and axial) loads. They have single-row, double-row and four-row tapered roller designs. Single row tapered roller bearings can bear radial load and axial load in only one direction. Under radial load, the axial component of the bearing will be affected and must be offset, so it is usually adjusted relative to the second bearing.

Product Features

• Higher radial, axial load rating bearing capacity.
• The optimized design of the roller and raceway contact profile extend the bearing life and makes reliable operation.
• Less bearing temperature rise.
• Applicable in medium low to high speed.

Applications

Automobile front wheel, rear wheel, transmission, differential, pinion shaft, machine tool spindle, construction machinery, large agricultural machinery, railroad vehicle gear reduction device, steel rolling mill roll neck small reduction device.

Single Row Tapered Roller Bearings

Paired Single Row Tapered Roller Bearings

Double Row Tapered Roller Bearings

Four Row Tapered Roller Bearings
Spherical Roller Bearings

Spherical roller bearings have two rows of spherical rollers, the outer ring has a common concave spherical raceway, the inner ring has two concave raceways that are inclined at an angle to the bearing axis, the curvature center of the outer ring raceway is the same as the bearing center. Spherical roller bearings are self-aligning and are not affected by misalignment of the shaft and bearing box or deflection of the shaft, and can compensate for the resulting concentricity errors. In addition to bearing radial load, this type of bearing can also bear two-way axial load and its combined load. It has a large bearing capacity and good vibration and impact resistance.

Product Features

• It is able to bear high radial load.
• It is able to automatically self align.
• Applicable in low to medium speed.

Applications

Spherical roller bearings are mainly used in various mechanical equipment in steel, mining, papermaking, shipbuilding, textile machinery, coal mills, electric power and other industries. They are widely used type of bearings in the machinery industry.

Spherical Roller Bearings

With Adapter Sleeve Series

With Withdrawal Sleeve Series
Thrust Spherical Roller Bearings

Thrust spherical roller bearings are the same as spherical roller bearings. The raceway surface of the race is a spherical surface centered on the same point on the central axis of the bearing. The rollers of this type of bearing are spherical, so it has the function of self-aligning. , It is not very sensitive to coaxiality and shaft deflection. This type of bearing has a very large axial load capacity. It can also bear a number of radial loads while bearing axial loads, but the radial load must not exceed 55% of the axial load.

Applications

Hydroelectric generators, vertical motors, ship propeller shafts, tower cranes, extruders, etc.

Thrust Spherical Roller Bearings
Angular Contact Ball Bearings

The raceways of the inner and outer rings of ACBB can have relative displacement in the direction of the horizontal axis, that can withstand combined loads—that is, radial and axial loads acting simultaneously. The axial-load carrying capacity of ACBB increases as the contact angle increases. The contact angle is defined as the angle between the line between the contact point of the steel ball and the raceway and the vertical line of the bearing axis on the radial plane. The load is transferred from one raceway to another along the line connecting the contact points of the steel ball and the raceway.

Product Features

• It is able to bear radial ,axial composite load.
• Can withstand axial radial load or overturning moment.
• Applicable in extremely high speed.

Applications

Machine tools, precision instruments, automobiles, fluid conveying machinery, light industry machinery, etc.

Single Row Angular Contact Ball Bearings

Double Row Angular Contact Ball bearings

Double Row Cam Rollers

Four Point Contact Ball Bearings
Insert bearings

The insert bearing is actually a variant of the deep groove ball bearing. Its characteristic is that its outer ring outer diameter surface is a spherical surface, which can be fitted into the corresponding concave spherical surface of the bearing seat to play the role of centering.
DHK insert bearings usually have a widened inner ring, which is fixed to the shaft by an eccentric locking ring ((GRAE...NPPB RAE...NPPB RALE...NPPB GE...KRPB3 GE...KRRB E...KRRB GE...KLLHB series) or fixed to the shaft by two screws (GAY...NPPB, GLE...KRRB GYE...KKRB series).
In addition, there are 2...NPPB series with the same dimensional data as 62 series bearings, but the outer diameter is spherical. How to use an adapter sleeve to fix the GSH...RRB series on the shaft.

Applications

Insert bearings are preferentially suitable for occasions that require simple equipment and parts, such as agricultural machinery, transportation systems or construction machinery.

Radial Insert Ball Bearings With Eccentric Locking Collar

Radial Insert Ball Bearings Without Eccentric Locking Collar
Deep Groove Ball bearings

Deep-groove ball bearings are common type of rolling bearings. The basic deep-groove ball bearing is composed of an outer ring, an inner ring, a group of steel balls and a group of holding frames. There are two types of deep groove ball bearings，single-row and double-row. The deep-groove ball structure is also divided into two types: sealed and open. The open type refers to the bearing without a seal structure. The sealed deep-groove ball is divided into dust-proof sealed and oil-proof seal. The material of the dust-proof sealing cover is stamped steel plate, which only simply serves to prevent dust from entering the bearing raceway. The oil-proof type is a contact oil seal, which can effectively prevent the grease in the bearing from overflowing.

Product Features

• It's able to bear radial load and slightly axial load.
• Optimized the internal design and the raceway surface roughness, the running will be more quiet.
• Applicable in very high speed

Applications

Motors, machine tools, automobiles, precision equipment, household appliances, chemical machinery, general machinery, agricultural machinery, etc.

Single Row Deep Groove Ball Bearings

Single Row Deep Groove Ball Bearings with Snap Ring Groove and Snap Rings

Double Row Deep Groove Ball Bearings

Spherical Roller Bearings Manufacturers

Ningbo DHK Precision Bearing Co., Ltd.

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Patented Technology

Ningbo DHK Precision Bearing Co., Ltd. (“DHK” for short) is a specialist enterprise engaged in the R&D, manufacture and sales of bearings.Is a famous China Spherical Roller Bearings Manufacturers and Spherical Roller Bearings Factory, we offer Wholesale Spherical Roller Bearings for sale. And is located in Ningbo Zhenhai Economic Development Zone with convenient transportation. Since the establishment for over a decade, "technology", "quality" and "service" have always been the initial issues in our mind for the sake of development. We provide reliable products and special customized services for global enterprises in heavy industry and have got the Satisfaction and won good reputation of a number of enterprises at home and abroad.

DHK mainly produces cylindrical roller bearings, conical roller bearings, self-aligning roller bearings, ball bearings, as well as various kinds of non-standard bearings and bearings with specially treated surface. So far, DHK’s bearings have been widely applied in such fields as engineering machinery, industrial pump, machine tool, compression engine, gear case, wind power and metallurgy in developed European and American countries.

DHK has the measuring room and inspection room of bearings in the industry and has introduced top-end inspection equipment worldwide and established the QC system in China,thus guaranteeing product quality in an all-round way.

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CERTIFICATE

DHK has passed IATF16949 quality system certification and ISO14001 environmental management system certification；and DHK is a national high-tech enterprise.

Latest News

How do Thrust Spherical Roller Bearings perform in heavy-duty applications with high axial loads?

2024-12-02 Industry News

Thrust Spherical Roller Bearings are engineered specifically to handle significant axial loads, making them a preferred solution in heavy-duty industrial applications where axial forces are predominan...
MORE
How do Four Row Cylindrical Roller Bearings handle both radial and axial loads simultaneously?

2024-11-25 Industry News

The key feature of Four Row Cylindrical Roller Bearings that enables them to handle both radial and axial loads is their arrangement of four rows of cylindrical rollers. In these bearings, the rollers...
MORE
What are the key advantages of using Four Row Cylindrical Roller Bearings in heavy-duty applications?

2024-11-18 Industry News

Four Row Cylindrical Roller Bearings are specifically designed to handle both large radial and axial loads simultaneously, making them ideal for heavy-duty applications. The unique configuration, with...
MORE
In what types of machinery or systems are paired single-row tapered roller bearings most commonly used?

2024-11-11 Industry News

In the automotive sector, paired single-row tapered roller bearings are commonly used in wheel hubs and axle assemblies. These bearings are essential for supporting both the radial forces from the veh...
MORE
How does the internal geometry of spherical roller bearings impact their load-carrying capacity?

2024-11-04 Industry News

One of the defining features of spherical roller bearings is the arrangement of two rows of rolling elements (typically cylindrical or barrel-shaped rollers) that run parallel to the shaft. This desig...
MORE
What are the key benefits of using spherical roller bearings in heavy-duty applications?

2024-10-28 Industry News

Spherical roller bearings are designed to support both high radial and axial loads simultaneously, making them ideal for heavy-duty applications. Their unique internal geometry, which includes two row...
MORE

Industry Knowledge Expansion

As a key component of industrial machinery, spherical roller bearings play an important role in transmission and bearing capacity. Its reliability under high loads, high speeds and harsh operating conditions has made it an indispensable component in many industries.

1. Technological innovation: open up the road for the development of the industry

1.1 Material Innovation

Under different working conditions, spherical roller bearings need to have excellent corrosion resistance, wear resistance and high temperature stability. Manufacturers continue to invest in research to find more advanced materials such as high-strength steels, ceramic composites, etc., to improve the performance of bearings. The balance of high-strength steel in its strength and toughness allows it to maintain long-life operation under high-load conditions. Ceramic materials are suitable for applications in extreme environments due to their excellent corrosion resistance and high temperature characteristics.

1.2 Design optimization

With computer-aided design software, manufacturers can perform precise simulations and analyzes to optimize the geometry of spherical roller bearings. This includes the design of the rolling elements and raceways to minimize energy loss and friction, increasing the efficiency of the bearing. In addition, surface treatment techniques such as coating, grinding and polishing can improve surface quality, further reduce friction and wear, and extend the service life of bearings.

2. Excellent quality: a solid foundation to win the market

2.1 Manufacturing process control

The manufacturing process of spherical roller bearings requires high precision machining and assembly. The manufacturer ensures the accuracy and stability of each production link through a strict quality control process. From the screening and testing of raw materials, to the precision machining of parts and the assembly of final products, each step is strictly monitored to ensure product consistency and reliability.

2.2 Quality inspection

The manufacturer adopts a series of advanced quality inspection methods to ensure that the products meet high standards. High-precision measuring equipment enables precise measurements of bearing dimensions, geometry and surface quality. Infrared thermal imaging technology can be used to detect the temperature distribution of bearings during operation and help discover potential abnormalities.

3. Sustainable development: the balance between technology and environmental protection

3.1 Energy saving and emission reduction

Manufacturers are committed to reducing energy consumption and carbon emissions during production. They invest in updated production equipment to improve production efficiency and reduce waste of resources. An optimized lubrication scheme can also reduce the friction loss of the bearing during operation, thereby reducing energy consumption.

3.2 Circular Economy

Manufacturers encourage customers to send end-of-life bearings back for rework or recycling. This helps reduce waste generation and saves raw materials. In addition, some manufacturers are also researching and developing degradable materials to reduce the impact on the environment.

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Spherical Roller Bearings Wholesale

Cylindrical Roller Bearings

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