China supplier Rear Arm Needle Bearing Ne70214 + dB70216 for 206 Auto Repair Kit deep groove ball bearing

Product Description

Rear Arm Needle Bearing NE75714 + DB75716 For 206 Auto Repair Kit

Description:

 

Model: NE75714 ( 5132.71 ),DB75716 (5132.72 )

 

  NE75714         ID47*OD53.098WIDTH25.5mm

 DB75716          ID47*OD53.09WIDTH19.5mm
 

  For Both Sides (Left & Right)

For Both Sides (Left & Right) Please remember this kit will only do 1 side of the axle, you need TWO to do both sides which is recommended.  

 

 

Rear Arm Bearing for 206

 

Please let me know your request.Like do you need to Sliver or need to use your packege or need to produce according your sample.Because we are factory,so we can do anything if you ask.

 

NE75714

FRS4726

SE8209

5132.71

47*53.098*25.5mm

 

DB75716

HK4719

SE8208

5132.72

47*53.09*19.5mm

 

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Cage: With Cage
Rows Number: Single
Load Direction: Radial Bearing
Style: With Outer Ring
Material: Bearing Steel
Type: Open
Samples:
US$ 1/Piece
1 Piece(Min.Order)

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Request Sample

Customization:
Available

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Customized Request

needle bearing

Challenges and Solutions for Needle Bearings in High-Speed Applications

Needle bearings face specific challenges when used in high-speed applications due to the unique combination of factors that affect their performance at elevated rotational speeds. However, these challenges can be effectively addressed through various design considerations and engineering solutions. Here’s a closer look:

  • Centrifugal Forces:

In high-speed applications, centrifugal forces acting on the needle rollers can cause instability and increased friction. These forces can lead to premature wear and reduced bearing life.

Solution: To counteract centrifugal forces, manufacturers design needle bearings with optimized cage designs and materials that enhance roller stability and minimize friction. This can involve using lightweight materials for cages and rollers to reduce the impact of centrifugal forces.

  • Heat Generation:

High speeds generate more heat due to friction and increased operating temperatures. Excessive heat can lead to lubricant breakdown, reduced viscosity, and potential bearing damage.

Solution: Bearing design and material selection play a crucial role in managing heat generation. Improved lubrication systems, enhanced cooling methods, and proper selection of lubricants with high-temperature stability can help dissipate heat effectively.

  • Lubrication:

High-speed applications require consistent and efficient lubrication to reduce friction and manage heat. Inadequate lubrication can lead to increased wear, increased operating temperatures, and potential bearing failure.

Solution: Manufacturers develop advanced lubrication systems and use lubricants specifically formulated for high-speed applications. Proper lubricant selection and maintenance practices, such as monitoring lubricant condition and replenishing as needed, are critical for ensuring optimal performance.

  • Cage Design:

In high-speed operations, cage design plays a crucial role in maintaining needle roller stability, preventing friction, and minimizing wear. Inadequate cage design can lead to cage distortion and roller skewing.

Solution: Advanced cage designs, often involving optimized shapes and materials, are developed to enhance roller guidance, reduce friction, and maintain proper roller alignment even at high speeds.

  • Bearing Materials:

The choice of materials is vital for high-speed needle bearings. Improper material selection can lead to increased friction, wear, and reduced fatigue life.

Solution: Manufacturers use high-performance materials that offer low friction, high fatigue resistance, and increased hardness to withstand high-speed conditions.

  • Vibration and Noise:

High-speed needle bearings can generate vibrations and noise due to dynamic forces. Excessive vibration can impact overall system performance and cause discomfort or damage.

Solution: Engineering techniques such as precision machining, balancing, and design optimization are employed to minimize vibration and noise. Additionally, advanced noise-reduction materials and coatings can be applied to components to dampen vibrations and mitigate noise.

In summary, the challenges associated with using needle bearings in high-speed applications can be effectively addressed through careful design considerations, material selection, lubrication strategies, and advanced manufacturing techniques. By implementing these solutions, manufacturers ensure that needle bearings perform optimally even at elevated rotational speeds, contributing to the efficiency and reliability of high-speed machinery and equipment.

needle bearing

Enhancement of Automotive Engines and Transmissions through Needle Bearings

Needle bearings play a critical role in enhancing the operation of automotive engines and transmissions, contributing to their efficiency, reliability, and overall performance. These precision bearings are strategically employed in various components to address specific challenges and optimize functionality. Here’s how needle bearings enhance the operation of automotive engines and transmissions:

  • Engine Components:

1. Connecting Rods:

Needle bearings are commonly used in connecting rods, the crucial components that connect the piston to the crankshaft. Their compact design and high load-carrying capacity allow for smooth reciprocating motion while accommodating the dynamic loads generated by combustion.

  • 2. Camshafts:

In overhead camshaft (OHC) configurations, needle bearings are employed to support the camshaft. These bearings reduce friction and ensure precise rotation, allowing for accurate valve timing and improved engine efficiency.

  • 3. Rocker Arms:

Needle bearings are utilized in rocker arm assemblies to facilitate the movement of rocker arms. This contributes to more precise valve actuation, reduced friction, and enhanced overall engine performance.

  • Transmissions:

1. Gear Shafts:

Needle bearings are used in gear shafts to support and facilitate their rotational movement. The low-friction characteristics of needle bearings improve gear shifting smoothness and reduce energy loss, enhancing transmission efficiency.

  • 2. Planetary Gears:

Automatic transmissions feature planetary gearsets, where needle bearings provide support between gear elements. This design reduces friction during gear engagement and disengagement, resulting in seamless gear changes.

  • 3. Torque Converters:

In automatic transmissions, needle bearings contribute to the operation of torque converters. They enable the smooth transfer of power between the engine and transmission, enhancing drivability and fuel efficiency.

By incorporating needle bearings into these critical engine and transmission components, automotive manufacturers achieve several benefits:

  • Reduced Friction:

The low-friction design of needle bearings reduces energy loss, contributing to improved fuel efficiency and overall engine performance.

  • Enhanced Durability:

Needle bearings’ ability to handle high loads and provide reliable support extends the lifespan of engine and transmission components.

  • Precise Motion:

Needle bearings facilitate precise and controlled motion in components like camshafts, rocker arms, and gear shafts, resulting in accurate engine timing and smooth gear shifts.

  • Reduced Vibration:

By minimizing friction and providing stable support, needle bearings contribute to reduced vibration and noise in the engine and transmission systems.

  • Improved Shift Quality:

Seamless gear shifts and smooth operation in automatic transmissions are achieved through the use of needle bearings in gear assemblies.

  • Optimized Performance:

Overall, needle bearings enhance the efficiency, durability, and performance of automotive engines and transmissions, resulting in vehicles that are more fuel-efficient, reliable, and enjoyable to drive.

needle bearing

Unique Design Features of Needle Bearings and Their Benefits

Needle bearings, also known as needle roller bearings, have a distinctive design that sets them apart from other types of bearings. This unique design offers several benefits that make needle bearings well-suited for specific applications requiring compactness, high load capacity, and efficient motion. Here are the key design features of needle bearings and their associated benefits:

  • Cylindrical Rollers with High Length-to-Diameter Ratio:

Needle bearings feature cylindrical rollers with a length-to-diameter ratio much greater than conventional roller bearings. This design allows for efficient load distribution over a larger contact area, enabling needle bearings to handle high radial loads while maintaining a compact size.

  • Compact Design:

The slender profile of needle rollers results in a compact bearing design. This compactness is advantageous in applications with limited installation space or weight constraints, where traditional bearings may not fit or are too heavy.

  • Reduced Friction and Contact Angle:

Due to the smaller diameter of needle rollers, the contact angle with the bearing raceways is reduced. This leads to lower friction levels during operation, resulting in energy efficiency, reduced heat generation, and extended bearing life.

  • High Load-Carrying Capacity:

The longer cylindrical rollers of needle bearings provide a larger contact area for load distribution. This design feature enables needle bearings to handle high radial loads, making them suitable for applications requiring substantial load capacity.

  • Precise and Smooth Motion:

Needle bearings offer smoother and more precise rolling motion due to their reduced friction and smaller contact area. This characteristic is essential for applications demanding accurate and controlled movement.

  • High Rigidity and Stiffness:

Despite their slender appearance, needle bearings exhibit high rigidity and stiffness. This attribute ensures minimal deflection under load and precise positioning, making them suitable for applications with strict tolerance requirements.

  • Versatility and Adaptability:

The unique design of needle bearings allows for their use in various industries and applications. They can excel in situations where high load capacity and compact design are crucial, such as in automotive, aerospace, and industrial machinery.

  • Reduced Heat Generation:

Efficient load distribution and reduced friction contribute to lower heat generation during operation. This not only prolongs bearing life but also enhances overall system efficiency.

  • Weight Reduction:

Due to their compact design, needle bearings result in lightweight components. This is particularly beneficial in applications where minimizing weight is essential, such as in aerospace and automotive systems.

  • Long Service Life:

The combination of efficient load handling, reduced friction, and durable materials contributes to extended bearing longevity. This can lead to decreased maintenance requirements and increased equipment uptime.

Overall, the unique design features of needle bearings offer numerous benefits that align with specific application requirements, making them a valuable solution for scenarios where their attributes are advantageous.

China supplier Rear Arm Needle Bearing Ne70214 + dB70216 for 206 Auto Repair Kit   deep groove ball bearingChina supplier Rear Arm Needle Bearing Ne70214 + dB70216 for 206 Auto Repair Kit   deep groove ball bearing
editor by CX 2024-03-25

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