China manufacturer 2077930 77750K 382952/Hc 381992hc Four Row Tapered Roller Bearings for Rolling Machine with Hot selling

Product Description

257130 77750K 382952/HC 381992HC Four Row Tapered Roller Bearings For Rolling Machine

Product Description

Tapered roller bearings refer to radial thrust rolling bearings whose rolling elements are tapered rollers. There are 2 kinds of small cone angle and large cone angles. The small cone angle mainly bears the combined radial and axial loads dominated by radial loads. It is often used in pairs and installed in reverse. The inner and outer races can be installed separately, and the radial and axial clearances can be adjusted during installation and use; The large cone angle mainly bears the combined axial and radial loads, which are mainly axial loads. Generally, it is not used to bear pure axial loads alone but can be used to bear pure radial loads when arranged in pairs (the ends with the same name are installed opposite to each other).

Tapered roller bearings are 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 rows of rollers installed. Single-row tapered roller bearings can bear radial loads and axial loads in 1 direction. When the bearing is subjected to radial load, an axial component force will be generated, so another bearing that can withstand the axial force in the opposite direction is needed to balance it.

Size range
The basic dimensions of CZPT tapered roller bearings are listed in the dimension data table,

Single-row tapered roller bearings:
Inner diameter size range: 20mm~1270mm
Outer diameter range: 40mm~1465mm
Width size range: 15mm~240mm

Double-row tapered roller bearings:
Inner diameter size range: 38mm~1560mm
Outer diameter range: 70mm~1800mm
Width size range: 50mm~460mm

Four-row tapered roller bearings:
Inner diameter size range: 130mm~1600mm
Outer diameter size range: 200mm~2000mm
Width size range: 150mm~1150mm

Product Parameters

Product Name 

Tapered Roller Bearing

Type

Tapered Roller Bearing

Structure

Tapered roller, retainer, inner and outer ring tapered

Applicable Industries

Building materials workshop, construction engineering, machinery maintenance workshop, retail, manufacturing plant, motor,
automobile hub, agricultural machinery

Brand Name

HOTE  BEARING

Size

20mm-500mm

Accuracy Class

P6,P0,P4,P5

Seal Number of Rows

Single row / Double row / Four-row

Origin

ZheJiang , China

Material

GCr15

Service

OEM / ODM

Features

Long-life High Speed

Bearing No.                         Dimension(mm)                                    Basic Load Weight(kg)
Model No. d D T B C r(min) r1(min)
3980/3920 60.325 112.712 30.162 30.048 23.812 3.5 3.3 1.29
558/552 60.325 123.825 38.1 36.678 33.338 2.3 3.3 2.12
28985/28921 60.325 100 25.4 25.4 19.845 3.5 3.3  
28598/28920 60.325 101.6 25.4 25.4 19.845 3.5 3.3 79
390A/394AS 63.5 110 22 21.996 18.821 1.5 3.3 0.82
L610549/61571 63.5 94.458 19.05 19.05 15.083 1.5 1.5 0.45
3982/3920 63.5 112.712 30.162 30.048 2.812 3.5 3.3 1.22
HM212047/HM212011 63.5 12.238 38.1 38.354 29.718 7 3.3 1.91
559/552A 63.5 123.825 38.1 36.678 30.163 2.5 2.3 1.93
29585/29520 63.5 107.85 25.4 25.4 19.05 3.5 3.3 0.91
29585/29521 63.5 110 25.4 25.4 19.05 4 1.3 0.98
JM511946/JM511910 65 110 28 28 22.5 3 2.5 1.05
JLM710949/JLM71571 65 102 24 23 28.5 3 13.3 0.72
HM212049/HM212011 66.675 122.238 38.1 38.354 29.718 3.5 1.3 1.384
395A394A 66.675 110 22 21.996 18.824 0.8 1.3 1.06
395S/394A 66.675 110 22 21.996 18.824 3.5 3.3 0.78
29590/29520 66.675 107.95 25.4 25.4 19.05 3.5 0.8 0.84
29590/29522 66.675 107.95 25.4 25.4 19.05 3.6 3.3 0.864
39590/39520 66.675 112.712 30.162 30.62 23.812 3.5 3.3 1.13
3984/3920 66.675 112.712 30.162 30.048 23.812 3.5 3.3 0.78
3994/3920 66.675 112.712 30.162 30.048 23.812 5.5 1.3 1.15
399A/394A 68.262 110 22 21.996 18.824 2.3 1.3 0.74
560S/552A 68.262 123.825 38.1 36.678 30.162 3.5 2 1.84
482/472 69.85 120 29.795 29.007 24.237 3.5 3.3 1.25
33275/33462 69.85 117.475 30.162 30.162 23.812 3.5 0.8 1.25
33275/33472 69.85 120 29.794 30.163 23.444 3.6 3.3 1.25
H913849/H9138710 69.85 146.05 41.275 39.688 25.4 3.5 3.3 2.85
47487/47420 59.85 120 32.545 32.525 26.195 3.5 3.3 1.46
47487/47420X 69.85 120 32.545 32.525 26.915 3.2 2.5 1.46
JM612949/JM612910 70 115 29 29 23 3 2.5 1.13
JLM813049/JLM813571 70 110 26 25 20.51 1 2 0.88
567/563 73.571 127 36.512 30.17 28.575 3.5 3.3 1.79
29685/29620 73.571 112.712 25.4 25.4 19.05 3.5 3.3 0.88
33287/33462 73.571 117.475 30.162 30.162 23.812 3.5 0.8 1.17
33287/33472 73.571 120 2.794 30.162 23.444 3.5 3.3 1.26
575/572 76.2 139.992 36.512 36.098 28.575 3.5 3.3 2.37
K495A/493 76.2 136.525 30.162 27.769 22.225 3.6 3.3 1.8
755/752 76.2 161.925 47.625 48.26 38.1 3.5 3.3 4.68
9285/9220 76.2 161.925 49.212 40.038 31.75 3.5 3.3 4.24
9378/9320 76.2 117.8 52.387 50.8 34.925 3.5 3.3 6.05
42687/42620 76.2 127.8 30.162 31 22.225 3.5 3.3 1.45
HH221430/HH221410 76.2 19.5 57.15 57.531 46.038 3.5 3.3 8.86
JM515649/JM515610 80 130 35 34 28.5 3 2.5 1.7
740/742 80.962 150.089 44.45 46.672 36.512 5 3.3 3.39
495/493 82.55 136.525 30.162 29.769 22.225 3.5 3.3 1.6

Detailed Photos

 

FAQ

Q1:What is your Before-sales Service?
1>. Offer to bear related consultation about technology and application;

2>.Help customers with bearing choice, clearance configuration, product” life, and reliability analysis;

3>. Offer highly cost-effective and complete solution program according to site conditions;

4>. Offer localized program on introduced equipment to save running cost

Q2: What is your After-sales Service?
1>. Offer training about bearing installation and maintenance;

2>.Help customers with trouble diagnosis and failure analysis;

3>. Visit customers regularly and feedback on their rational suggestions and requirements to the company.

Q3: How about your company’s strength?
1>.FREE SAMPLES:
contact us by email or trade manager, we will send the free samples according to your request. 

2>. World-Class Bearing:
We provide our customers with all types of indigenous roller bearings of world-class quality.

3>.OEM or Non-Stand Bearings: 
Any requirement for Non-standard roller bearings is Easily Fulfilled by us due to our vast knowledge and links in the industry. 

4>.Genuine products With Excellent Quality: 
The company has always proved the 100% quality products it provides with genuine intent.

5>. After-Sales Service and Technical Assistance: 
The company provides after-sales service and technical assistance as per the customer’s requirements and needs.

6>.Quick Delivery: 
The company provides just-in-time delivery with its streamlined supply chain.

7>.Cost Saving: 
We provide long-life, shock-resistant, and high-reliability roller bearings with excellent quality and better performance.
Resulting in increased cost savings.

Q4: What will we do if you are not satisfied with the product?
A: If have any abnormal, Please contact us at the first time, and we will immediately process

Q5: How long will you respond to our problems?
A: We will respond within 1 hour. 24 hours to solve your problem

Q6: Is optional lubrication provided?
A: We can offer a wide range of oils and greases for a variety of applications. Please contact our engineer for technical
assistance with any special requirements

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Rolling Body: Ball Bearings
The Number of Rows: Double
Outer Dimension: Large (200-430mm)
Samples:
US$ 10/Piece
1 Piece(Min.Order)

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Order Sample

Customization:
Available

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Customized Request

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Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

tapered roller bearing

Can you Explain the Design and Construction of Tapered Roller Bearings?

The design and construction of tapered roller bearings are characterized by their conical geometry and specific components that enable them to handle radial and axial loads simultaneously. Here’s an overview of their design and construction:

  • Components:

Tapered roller bearings consist of the following components:

  • Inner Ring:

The inner ring has a conical raceway on its inner surface, which matches the conical shape of the rollers. It serves as the raceway for the rollers and provides support to the rotating assembly.

  • Outer Ring:

The outer ring also features a conical raceway on its inner surface that complements the shape of the rollers. The outer ring provides a rigid structure to house the entire bearing assembly.

  • Tapered Rollers:

The rollers have a conical shape with varying diameters along their length. This design allows the rollers to make point contact with the inner and outer raceways, distributing loads efficiently.

  • Cage:

The cage or retainer holds the rollers in position, maintaining proper spacing and preventing them from coming into contact with each other. The cage material can vary, and its design may affect factors like friction and heat generation.

  • Conical Geometry:

The distinguishing feature of tapered roller bearings is their conical geometry. The conical angle is defined by the contact angle between the roller axis and the bearing axis. This angle facilitates effective load distribution and axial load support.

  • Load Distribution:

The conical shape of the rollers and raceways allows tapered roller bearings to handle both radial and axial loads. Radial loads are primarily supported by the larger diameter of the rollers at the large end of the cone, while axial loads are absorbed by the smaller diameter near the small end of the cone.

  • Adjustable Clearance and Preload:

Many tapered roller bearings allow for adjustable internal clearance or preload. This feature enables fine-tuning of the bearing’s internal play, optimizing performance and minimizing friction.

  • Thrust Capability:

Tapered roller bearings can handle thrust (axial) loads in one direction, making them suitable for applications where axial loads need to be managed along with radial loads.

  • Applications:

Tapered roller bearings find applications in various industries, including automotive, heavy machinery, aerospace, and more. They are used in scenarios that require efficient load distribution and handling of combined loads.

In summary, tapered roller bearings are designed with conical geometry to accommodate both radial and axial loads. Their specific components, such as tapered rollers and a cage, work together to ensure effective load distribution, making them suitable for a wide range of industrial applications.

tapered roller bearing

What are Tapered Roller Bearings and How do They Function in Machinery?

Tapered roller bearings are a type of rolling element bearing designed to handle both radial and axial loads by providing a conical geometry. They consist of inner and outer rings, tapered rollers, and a cage that holds the rollers in place. Tapered roller bearings are commonly used in various machinery and equipment for their ability to support high radial and axial loads simultaneously. Here’s how they function in machinery:

  • Geometry:

Tapered roller bearings have an inner ring with a conical surface and an outer ring with a matching conical surface. The rollers are also shaped like truncated cones. This geometry allows the rollers to make contact with both the inner and outer raceways at a common point on the bearing axis, distributing loads more effectively.

  • Load Distribution:

The conical shape of tapered rollers enables them to handle both radial and axial loads. Radial loads are supported by the larger diameter of the rollers near the large end of the cone, while axial loads are absorbed by the smaller diameter near the small end of the cone.

  • Adjustable Clearance:

Tapered roller bearings often allow for adjustable clearance or preload. This feature permits fine-tuning of the bearing’s internal play to optimize performance, reduce friction, and prevent excessive wear.

  • Thrust Capability:

Tapered roller bearings can handle thrust (axial) loads in one direction, making them suitable for applications where axial loads need to be managed along with radial loads.

  • Applications:

Tapered roller bearings are commonly used in various machinery and equipment:

  • Automotive Industry:

Tapered roller bearings are widely used in wheel hubs, transmissions, and differential systems in automobiles, where they handle radial and axial loads experienced during driving.

  • Heavy Machinery:

In construction equipment, mining machinery, and industrial machinery, tapered roller bearings support heavy loads and shocks, making them suitable for applications like earthmoving and material handling.

  • Aerospace:

Tapered roller bearings are used in aircraft landing gear, where they support both vertical and horizontal loads during takeoff, landing, and taxiing.

  • Railways:

In trains, tapered roller bearings are used in wheelsets and axles to manage radial and axial loads that occur as the train moves along curves and straight tracks.

  • Wind Energy:

Tapered roller bearings are employed in wind turbine gearboxes, where they handle the radial and axial loads associated with converting wind energy into electrical power.

  • Installation:

Installation of tapered roller bearings often involves adjusting the internal clearance or preload to optimize performance. Proper lubrication is crucial to ensure smooth operation and longevity.

In summary, tapered roller bearings function by utilizing their conical geometry to support both radial and axial loads, making them versatile components in a wide range of machinery and equipment across various industries.

tapered roller bearing

How does Proper Lubrication Impact the Performance and Longevity of Tapered Roller Bearings?

Proper lubrication is essential for ensuring optimal performance and longevity of tapered roller bearings. Lubrication plays a critical role in reducing friction, preventing wear, and managing heat generated during operation. Here’s how proper lubrication impacts tapered roller bearings:

  • Reduced Friction:

Lubrication forms a thin film between the rolling elements and raceways, reducing direct metal-to-metal contact. This minimizes friction and the associated heat generation, allowing the bearing to operate smoothly and efficiently.

  • Wear Prevention:

Lubrication forms a protective barrier that prevents wear and surface damage. Without proper lubrication, friction can lead to accelerated wear, pitting, and even surface scoring, shortening the bearing’s lifespan.

  • Heat Dissipation:

Effective lubrication helps dissipate heat generated during operation. This is especially crucial in high-speed applications where excessive heat can lead to premature bearing failure or degradation of lubricant properties.

  • Corrosion Protection:

Lubrication helps create a barrier that protects bearing surfaces from environmental factors that could lead to corrosion. This is particularly important in applications exposed to moisture, chemicals, or other corrosive agents.

  • Noise and Vibration Reduction:

Proper lubrication can dampen vibrations and reduce noise by providing a cushioning effect between the rolling elements and raceways. This contributes to smoother and quieter operation.

  • Longevity:

Well-lubricated bearings experience less wear and stress, leading to extended service life. Bearings that are inadequately lubricated or run dry are prone to premature failure due to excessive wear, heat buildup, and damage to bearing surfaces.

  • Efficiency:

Adequate lubrication maintains the bearing’s efficiency by minimizing energy losses due to friction. Bearings that lack proper lubrication require more energy to overcome higher friction levels, resulting in reduced efficiency.

  • Lubrication Methods:

Various lubrication methods are available, including grease lubrication and oil lubrication. The choice depends on factors such as speed, load, temperature, and application requirements.

To ensure proper lubrication:

  • Follow Manufacturer Recommendations:

Consult the bearing manufacturer’s recommendations for lubricant type, viscosity, and replenishment intervals.

  • Monitor and Maintain:

Regularly monitor the condition of the lubricant and the bearing’s performance. Implement a maintenance schedule for lubricant replacement or replenishment.

  • Environmental Considerations:

Consider the operating environment’s temperature, contamination levels, and exposure to external elements. Some applications may require special lubricants for extreme conditions.

In summary, proper lubrication is crucial for maintaining tapered roller bearings’ performance, preventing wear, reducing friction and heat, and extending their lifespan. A well-lubricated bearing contributes to smoother operation, lower maintenance costs, and improved efficiency.

China manufacturer 2077930 77750K 382952/Hc 381992hc Four Row Tapered Roller Bearings for Rolling Machine   with Hot sellingChina manufacturer 2077930 77750K 382952/Hc 381992hc Four Row Tapered Roller Bearings for Rolling Machine   with Hot selling
editor by CX 2024-03-30

Tapered Roller Bearing

As one of the leading tapered roller bearing manufacturers, suppliers, and exporters of mechanical products, We offer tapered roller bearing and many other products.

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