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

Deep Groove Ball Bearings Manufacturers

Ningbo DHK Precision Bearing Co., Ltd.

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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 Deep Groove Ball Bearings Manufacturers and Motor Bearings Factory, we offer Wholesale Deep Groove Ball 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

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
How can the misalignment of angular contact ball bearings affect their operational efficiency?

2024-10-21 Industry News

Misalignment leads to uneven loading of the bearing's rolling elements, which disrupts their optimal contact with the raceways. This condition results in increased friction as the balls struggle to ro...
MORE
How can improper installation affect the performance of paired single row tapered roller bearings?

2024-10-14 Industry News

Premature Wear: Improper installation of paired single row tapered roller bearings can lead to uneven contact patterns and load distribution, which are critical to their performance. When the bearings...
MORE

Industry Knowledge Expansion

1: The Crucial Role of Motor Bearings in Industrial Efficiency

Motor bearings, though often diminutive in size, wield an outsized influence on the efficiency and reliability of a wide array of industrial machinery. These unassuming components, nestled within rotating machinery, are tasked with the formidable responsibility of facilitating seamless movement, absorbing dynamic loads, and minimizing frictional losses. In doing so, motor bearings play a pivotal role in optimizing industrial processes, ranging from the smooth operation of electric motors in manufacturing plants to the intricate dance of components within aerospace systems.

Motor bearings manufacturers are the architects behind these unsung heroes of machinery. They meticulously design and produce bearings to meet exacting specifications, ensuring that these components withstand the rigors of operation and contribute significantly to overall productivity. The intricate interplay between these manufacturers and the industries they serve exemplifies a relationship built on the tenets of operational efficiency, reliability, and unwavering dedication to excellence.

2: Engineering Excellence: Innovations and Manufacturing Techniques

Within the realm of motor bearings manufacturing, the pursuit of engineering excellence is a ceaseless journey marked by innovation and precision. A convergence of cutting-edge technologies and time-honored craftsmanship defines the landscape of producing these miniature powerhouses. Among the cornerstones of manufacturing techniques employed are:

Material Selection: Motor bearings manufacturers meticulously curate materials that showcase a harmonious blend of mechanical robustness, resistance to corrosive forces, and the capability to endure extreme temperatures. The utilization of materials such as aerospace-grade stainless steel, advanced ceramics, and proprietary alloys exemplifies an unwavering commitment to reliability and longevity.

Precision Manufacturing: The heart of motor bearings manufacturing lies in precision. Contemporary processes like Computer Numerical Control (CNC) machining and high-precision grinding culminate in components that exhibit sub-micron tolerances and mirror-like surface finishes. Such precision safeguards against unnecessary energy dissipation and wear, ultimately bolstering the overall efficiency of machinery.

Lubrication and Sealing: In the realm of motor bearings, proper lubrication is the bedrock of friction reduction and longevity. Manufacturers invest in research to develop innovative lubrication techniques that mitigate wear and tear, as well as sophisticated sealing mechanisms that fend off contaminants. These combined efforts forge motor bearings capable of sustained performance even in the harshest operational environments.

Condition Monitoring: The fusion of technology and manufacturing prowess extends to embedding intelligence within motor bearings. Incorporating sensors and advanced monitoring systems allows for real-time evaluation of bearing health. This proactive approach enables predictive maintenance strategies that preempt unplanned downtime, affording industries enhanced operational continuity.

3: Sustainability and Future Outlook

The ever-evolving landscape of motor bearings manufacturing has begun to echo the global call for sustainability. Manufacturers are progressively embracing environmentally conscious practices that resonate with modern sensibilities. The integration of recyclable materials, the adoption of energy-efficient manufacturing processes, and the minimization of waste generation all converge to portray a burgeoning commitment to ecological stewardship.

Looking ahead, the trajectory of motor bearings manufacturing promises a vista of innovation. In the context of Industry 4.0 and the burgeoning Internet of Things (IoT), motor bearings are primed to metamorphose into intelligent, interconnected entities. The amalgamation of sensors, data analytics, and predictive algorithms is poised to imbue these components with the capacity for real-time performance monitoring and optimization. In this era of unprecedented connectivity, the symbiosis between manufacturers and industries is slated to usher in an epoch marked by unparalleled efficiency, resilience, and adaptability.

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Deep Groove Ball Bearings Wholesale

Cylindrical Roller Bearings

Product Features

Applications

Tapered Roller Bearings

Product Features

Applications

Spherical Roller Bearings

Product Features

Applications

Thrust Spherical Roller Bearings

Applications

Angular Contact Ball Bearings

Product Features

Applications

Insert bearings

Applications