China manufacturer Na Series High Quality Na6910A Needle Roller Bearing with Inner Ring carrier bearing

Product Description

I PRODUCT INFO.
 Data Sheet

Item NA NK NKI NKIS
Material Chrome steel
Inner dia. 50 mm
Outer dia. 72 mm
Length 40 mm
Package cartom or as your requirements
Delivery lead time 10-15 days

II. Packing & Delivery
Packing Details:
1. Tube

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Cage: Without Cage
Rows Number: Double
Load Direction: Radial Bearing
Style: With Inner Ring
Material: Bearing Steel
Type: Open
Customization:
Available

|

Customized Request

needle bearing

Impact of Needle Bearing Cage Materials on Performance

The choice of needle bearing cage material significantly influences the performance, durability, and overall functionality of the bearings. The cage, also known as the retainer, holds the needle rollers in place, maintaining proper spacing and alignment. Different cage materials offer varying characteristics that impact the bearing’s operation:

  • Steel Cages:

Steel cages are a common choice for needle bearings due to their durability, high strength, and resistance to wear. They are suitable for applications with high loads, moderate speeds, and normal operating temperatures. Steel cages provide excellent stability and consistent roller spacing.

  • Plastic Cages:

Plastic cages, often made from materials like polyamide (nylon), offer advantages such as low friction, reduced noise, and electrical insulation. They are commonly used in applications where low noise levels and lightweight design are essential. Plastic cages are ideal for moderate-speed applications with light to moderate loads.

  • Brass Cages:

Brass cages are valued for their high thermal stability and resistance to corrosion. They are often used in applications with elevated temperatures and aggressive environments. Brass cages maintain their structural integrity at high speeds and provide reliable performance in challenging conditions.

  • Metal-Polymer Composite Cages:

Composite cages combine the benefits of different materials, such as steel and plastic. These cages provide improved lubrication retention, reduced friction, and enhanced wear resistance. They are suitable for applications where extended maintenance intervals and low friction are desired.

  • Needle Cages:

In certain needle bearing configurations, the needles themselves act as the cage, eliminating the need for a separate cage component. This design reduces cage-related friction, contributing to improved efficiency and lower energy consumption.

When selecting the appropriate cage material for needle bearings, consider the specific requirements of the application:

  • Load and Speed:

Choose a cage material that can withstand the expected load and speed conditions without deformation or excessive wear.

  • Operating Environment:

If the bearing will operate in extreme temperatures, corrosive atmospheres, or other harsh conditions, select a cage material with the necessary resistance to maintain performance.

  • Friction and Lubrication:

Consider the friction characteristics of the cage material and how it interacts with the lubricant. Some materials reduce friction, while others may require additional lubrication.

  • Noise and Vibration:

For applications where noise reduction is important, choose a cage material that minimizes noise and vibration generation during operation.

  • Weight:

In weight-sensitive applications, select a lightweight cage material that doesn’t compromise overall system efficiency.

The cage material plays a critical role in maintaining proper needle roller alignment, reducing friction, and ensuring the longevity of needle bearings. By carefully considering the application’s demands, you can select the optimal cage material that aligns with performance goals and operating conditions.

needle bearing

Challenges and Solutions for Preventing Needle Bearing Misalignment

Needle bearings, like all precision bearings, are susceptible to misalignment, which can lead to reduced performance, premature wear, and even bearing failure. Misalignment occurs when the bearing’s inner and outer rings are not properly aligned with each other or with the shaft and housing. Here are the challenges posed by needle bearing misalignment and the solutions to prevent it:

  • Challenge: Operating Conditions:

Highly dynamic applications, heavy loads, and vibrations can lead to misalignment over time, impacting bearing performance.

  • Solution: Adequate Load Distribution:

Choose a bearing with sufficient load-carrying capacity for the application’s demands. Distributing the load across multiple bearings can reduce individual bearing stress and mitigate misalignment.

  • Challenge: Shaft and Housing Tolerances:

Deviation from proper shaft and housing tolerances can result in misalignment.

  • Solution: Proper Installation:

Ensure the shaft and housing are within the specified tolerances during installation. Proper fits and clearances minimize the risk of misalignment.

  • Challenge: Shaft Deflection:

Shaft deflection due to heavy loads or improper supports can cause misalignment.

  • Solution: Stiff Supports:

Use stiff supports to minimize shaft deflection. This can involve using larger bearings, selecting appropriate support structures, or adding additional supports.

  • Challenge: Thermal Expansion:

Temperature changes can cause components to expand or contract, potentially leading to misalignment.

  • Solution: Thermal Management:

Consider the temperature range the bearing will operate in and select materials and lubricants that can handle these conditions. Providing adequate ventilation or cooling systems can also help manage temperature-related misalignment.

  • Challenge: Improper Handling and Installation:

Misalignment can occur if the bearing is mishandled during installation or if it’s not mounted correctly.

  • Solution: Precise Installation:

Follow proper installation procedures, including using appropriate tools, ensuring accurate alignment, and applying proper preload and torque settings.

  • Challenge: Lack of Lubrication:

Insufficient lubrication can cause increased friction and heat, potentially leading to misalignment.

  • Solution: Proper Lubrication:

Regularly lubricate the bearing according to the manufacturer’s recommendations. Proper lubrication minimizes friction and reduces the risk of misalignment caused by overheating.

  • Challenge: Shock and Impact Loads:

Sudden shock loads or impacts can disrupt bearing alignment.

  • Solution: Damping and Shock Absorption:

Use damping elements or shock-absorbing systems to mitigate sudden loads. This can help protect the bearing from misalignment due to shock forces.

In conclusion, preventing needle bearing misalignment requires a combination of proper design considerations, precise installation practices, and suitable operating conditions. By understanding the challenges posed by misalignment and implementing the appropriate solutions, you can ensure the optimal performance and longevity of needle bearings in various applications.

needle bearing

Needle Bearings: Function and Applications

Needle bearings, also known as needle roller bearings, are a type of rolling element bearing designed to accommodate high radial loads in a compact space. They consist of cylindrical rollers with a length-to-diameter ratio that is much greater than conventional roller bearings, resembling needles. Needle bearings play a vital role in various applications due to their unique design and capabilities. Here’s how needle bearings function and their diverse range of applications:

  • High Radial Load Capacity:

Needle bearings are well-suited for applications where space is limited, and high radial loads need to be accommodated. The longer rollers distribute the load over a larger contact area, allowing for higher load-carrying capacities.

  • Compact Design:

The slim and cylindrical shape of needle rollers allows for a compact and lightweight bearing design. This makes them ideal for applications with tight installation spaces or weight constraints.

  • Reduced Friction:

Due to their smaller diameter, needle rollers have a lower contact angle with the bearing raceways. This results in reduced friction and lower heat generation during operation, contributing to energy efficiency.

  • High Rigidity:

Despite their slender profile, needle bearings exhibit high rigidity and stiffness. This characteristic is advantageous in applications requiring precise positioning and minimal deflection under load.

  • Smooth Operation:

Needle bearings provide smoother rolling motion due to their smaller contact area and reduced friction. This attribute is essential for applications demanding precise and smooth motion, such as in automotive transmissions.

  • Automotive Applications:

Needle bearings are commonly used in automotive components, including transmissions, drive shafts, and constant velocity joints (CV joints). Their compact design and high load capacity make them ideal for these applications.

  • Industrial Machinery:

In industrial machinery, needle bearings find use in various applications, such as in gearboxes, textile machinery, printing presses, and agricultural equipment. They excel in situations where high load capacity is required within limited space.

  • Aerospace and Aviation:

Needle bearings are used in aerospace applications due to their lightweight design and ability to handle high loads. They are employed in components like aircraft landing gear, engine components, and control systems.

  • Medical Equipment:

The precision and compactness of needle bearings make them suitable for medical equipment such as surgical instruments, X-ray machines, and laboratory devices.

  • Robotics and Automation:

Robotic systems and automation equipment often require compact and lightweight bearings with high load-carrying capacities. Needle bearings fulfill these requirements, enabling precise movement and efficient operation.

  • Heavy-Duty Applications:

Needle bearings also find use in heavy-duty applications like construction equipment, where they handle substantial loads in challenging environments.

In summary, needle bearings function as efficient load-carrying components in applications requiring high radial load capacity, compact design, reduced friction, and precise motion. Their versatility and ability to thrive in diverse industries contribute to their widespread use in various demanding applications.

China manufacturer Na Series High Quality Na6910A Needle Roller Bearing with Inner Ring   carrier bearingChina manufacturer Na Series High Quality Na6910A Needle Roller Bearing with Inner Ring   carrier bearing
editor by CX 2024-03-28

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