China wholesaler Yoke Type Track Roller Bearings(NAST6ZZ NAST8ZZ NAST10ZZ NAST12ZZ NAST15ZZ NAST17ZZ NAST20ZZ NAST25ZZ NAST30ZZ NAST35ZZ NAST40ZZ NAST45ZZ NAST50ZZ) bearing driver

Product Description

Product Description

Track Roller Bearings are designed to run on all types of tracks and to be used in cam drives, conveyor systems, etc.

Track Roller Bearings are either of heavy-duty cylindrical roller, needle bearing or ball bearing construction. Support Rollers are based on cylindrical or needle rollers.

Applications Of Track Roller Bearings

  • Metals
  • Mining, mineral processing and cement
  • Railways
  • Material handling
  • Agriculture
  • Construction

Versions Of Track Roller Bearings

    Support Rollers Without Flange Rings, Without An Inner Ring

    • RSTO Series
    • RNA Series

    Support Rollers Without Flange Rings, With An Inner Ring

    • STO Series
    • NA Series

    Support Rollers With Flange Rings, With An Inner Ring

    • NATR Series
    • NATV Series
    • PWTR Series
    • NUTR Series
    • NAST  Series
    • CYR Series

    Cam Followers

    • KR,KRE,KRV,KRVE Series
    • NUKR,NUKRE Series
    • PWKR,PWKRE Series
    • CF,CFE,CFH Series

    Product Parameters

    Technical specification

    NAST is a separable type of bearing system that combines a thick-wall outer ring, an inner ring and needle rollers equipped with a precision cage.

    NAST…ZZ has a labyrinth seal consisting of a pair of side plates formed on both sides of the inner ring of model NAST.
    R : Spherical outer ring
    UU : With seal


    Bearing No. Dimensions(mm) C
    ZZ ZZUU ZZR ZZUUR d D B C a e f rsmin
    NAST6ZZ NAST6ZZUU NAST6ZZR NAST6ZZUUR  6 19 14 13.8 14 2.5 0.8 0.3 4120 4550 24.5
    NAST8ZZ NAST8ZZUU NAST8ZZR NAST8ZZUUR  8 24 14 13.8 17.5 2.5 0.8 0.6 5680 5890 39
    NAST10ZZ NAST10ZZUU NAST10ZZR NAST10ZZUUR 10 30 16 15.8 23.5 2.5 0.8 1 9700 9670 65
    NAST12ZZ NAST12ZZUU NAST12ZZR NAST12ZZUUR 12 32 16 15.8 25.5 2.5 0.8 1 10400 10900 75
    NAST15ZZ NAST15ZZUU NAST15ZZR NAST15ZZUUR 15 35 16 15.8 29 2.5 0.8 1 12300 14300 83
    NAST17ZZ NAST17ZZUU NAST17ZZR NAST17ZZUUR 17 40 20 19.8 32.5 3 1 1 17400 20900 135
    NAST20ZZ NAST20ZZUU NAST20ZZR NAST20ZZUUR 20 47 20 19.8 38 3 1 1 19200 24500 195
    NAST25ZZ NAST25ZZUU NAST25ZZR NAST25ZZUUR 25 52 20 19.8 43 3 1 1 20700 28400 225
    NAST30ZZ NAST30ZZUU NAST30ZZR NAST30ZZUUR 30 62 25 24.8 50.5 4 1.2 1 30300 45400 400
    NAST35ZZ NAST35ZZUU NAST35ZZR NAST35ZZUUR 35 72 25 24.8 53.5 4 1.2 1 32200 50600 550
    NAST40ZZ NAST40ZZUU NAST40ZZR NAST40ZZUUR 40 80 26 25.8 61.5 4 1.2 1.5 35700 61100 710
    NAST45ZZ NAST45ZZUU NAST45ZZR NAST45ZZUUR 45 85 26 25.8 66.5 4 1.2 1.5 37100 66400 760
    NAST50ZZ NAST50ZZUU NAST50ZZR NAST50ZZUUR 50 90 26 25.8 76 4 1.2 1.5 38700 71800 830


    Packaging & Shipping

    Our Advantages

    1. We have over 10 years’ experience.
    2. OEM or Non-Standard Bearings: Any requirement for Non-standard bearings is easily fulfilled by us due to our vast knowledge and links in the industry.
    3. After Sales Service and Technical Assistance: Our company provides after-sales service and technical assistance as per the customer’s requirements and needs.
    4. Quick Delivery: Our company provides just-in-time delivery with our streamlined supply chain.
    5.We attend promptly to any customer questions. We believe that if our customers are satisfied then it proves our worth. Our customers are always given quick support.                              

    Please contact us immediately if you have any questions.

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    Rolling Body: Roller Bearings
    The Number of Rows: Single
    Material: Bearing Steel


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

    track bearing

    Can you explain the maintenance and lubrication requirements for track bearings?

    Maintenance and lubrication are essential aspects of ensuring the optimal performance and longevity of track bearings. Proper maintenance practices and appropriate lubrication help minimize wear, reduce friction, prevent corrosion, and extend the service life of the bearings. Here’s an explanation of the maintenance and lubrication requirements for track bearings:

    Maintenance Requirements:

    • Cleanliness: It is crucial to maintain a clean operating environment for track bearings. Regularly remove dirt, dust, and debris from the track and bearing surfaces to prevent contamination, which can lead to premature wear and damage.
    • Inspection: Periodically inspect the track bearings for signs of wear, damage, or misalignment. Check for excessive play, noise, or roughness during operation. If any issues are detected, take appropriate measures such as bearing replacement or realignment to ensure optimal performance.
    • Tightening and Fasteners: Check the tightness of fasteners, such as bolts or screws, that secure the track bearings. Loose fasteners can lead to misalignment or instability. Ensure that all fasteners are properly tightened according to the manufacturer’s specifications.
    • Track Alignment: Proper track alignment is crucial for smooth and efficient operation of track bearings. Regularly check the alignment of the track or guide rails and make necessary adjustments to maintain proper alignment, minimizing excessive loads and wear on the bearings.
    • Load Limits: Adhere to the specified load limits for the track bearings. Exceeding the recommended load capacity can cause premature wear and failure. Consider the dynamic and static load ratings of the bearings to ensure they are not subjected to excessive loads that can compromise their performance.

    Lubrication Requirements:

    • Proper Lubricant Selection: Select the appropriate lubricant based on the operating conditions, such as temperature, load, and speed. Consult the manufacturer’s recommendations or seek expert advice to ensure the lubricant’s compatibility with the track bearings and the specific application.
    • Regular Lubrication: Follow a regular lubrication schedule as recommended by the manufacturer. This may involve applying lubricant at specified intervals or based on the operating hours. Adequate lubrication helps minimize friction, reduce wear, and maintain proper functioning of the track bearings.
    • Correct Lubrication Method: Apply the lubricant using the appropriate method, whether it’s manual greasing, automatic lubrication systems, or specialized lubrication techniques. Ensure that the lubricant reaches all necessary contact points and provides sufficient coverage to the bearing surfaces.
    • Monitoring and Replenishment: Monitor the lubricant levels regularly and replenish as needed. In some cases, track bearings may have built-in lubrication systems that require periodic refilling or maintenance. Keep track of the lubricant condition and replace it when it becomes contaminated or degraded.
    • Environmental Considerations: Consider the operating environment when selecting the lubricant. Extreme temperatures, exposure to moisture, or the presence of chemicals or contaminants may require special lubricants that can withstand these conditions and provide effective protection and lubrication.

    It is important to consult the manufacturer’s guidelines and recommendations specific to the track bearings being used. Following the recommended maintenance and lubrication practices ensures optimal performance, reduces the risk of premature failure, and maximizes the overall lifespan of the track bearings.

    track bearing

    How do track bearings contribute to the precision, accuracy, and reliability of motion control systems?

    Track bearings play a crucial role in enhancing the precision, accuracy, and reliability of motion control systems. They provide several key contributions that ensure smooth and consistent linear motion. Here’s a detailed explanation:

    • Precision Guidance: Track bearings offer precise guidance for linear motion systems. They are designed with close tolerances and accurate geometries, allowing for accurate positioning and control of the moving components. This precision guidance ensures that the desired motion is achieved with minimal deviation or error.
    • Smooth and Consistent Motion: By minimizing friction and providing smooth rolling or sliding surfaces, track bearings enable smooth and consistent motion in motion control systems. They reduce the effects of irregularities, misalignments, or vibrations, resulting in smoother operation and improved accuracy.
    • Repeatable Performance: Track bearings provide repeatable performance in motion control systems. They offer consistent and predictable motion characteristics, allowing for precise and repeatable positioning of the moving components. This repeatability is essential in applications that require high accuracy and consistency, such as CNC machining, semiconductor manufacturing, and precision measurement systems.
    • Load Distribution: Track bearings distribute the load evenly along their length, helping to minimize stress concentrations on specific components. This even load distribution improves the overall stability and reliability of the motion control system. It reduces the risk of component failure, deformation, or excessive wear, contributing to enhanced system reliability.
    • Minimized Play and Backlash: Track bearings are designed to minimize play and backlash, which are undesirable movements or clearances between components. Play and backlash can introduce inaccuracies and reduce the precision of motion control systems. Track bearings with tight tolerances and optimized designs help minimize these undesirable effects, ensuring precise and accurate motion.
    • Stiffness and Rigidity: Track bearings provide stiffness and rigidity to the motion control system. They resist deflection and maintain their shape under load, minimizing any unwanted flexing or bending. This stiffness enhances the overall stability and precision of the system, allowing for precise control and accurate motion even under varying loads or external forces.
    • Resistance to Contamination: Track bearings are often equipped with seals or shields to protect against contaminants such as dirt, dust, or liquids. This protection helps maintain the precision and reliability of the motion control system by preventing the ingress of particles that could interfere with the smooth operation of the bearings or cause premature wear and failure.

    By incorporating track bearings into motion control systems, industries can benefit from improved precision, accuracy, and reliability. Whether it’s achieving precise positioning, ensuring consistent and repeatable motion, minimizing play and backlash, or providing reliable load distribution, track bearings contribute to the overall performance and integrity of motion control systems.

    track bearing

    Are there specific materials commonly used in the construction of track bearings?

    Yes, specific materials are commonly used in the construction of track bearings to ensure their durability, load-carrying capacity, and resistance to various operating conditions. Let’s discuss the materials commonly used for different components of track bearings:

    • Outer and Inner Rings: The outer and inner rings of track bearings are typically made from high-quality bearing steels such as chrome steel (e.g., AISI 52100) or stainless steel. These materials offer excellent strength, hardness, and wear resistance. Chrome steel is the most commonly used material due to its favorable combination of mechanical properties and cost-effectiveness. In some cases, specialized alloys or heat-treated steels may be used to enhance specific properties like corrosion resistance or high-temperature performance.
    • Rolling Elements: The rolling elements in track bearings are commonly made from bearing-grade steel or ceramic materials. Bearing-grade steel, similar to the materials used for the outer and inner rings, offers high strength and wear resistance. Ceramic materials, such as silicon nitride (Si3N4) or zirconia (ZrO2), are also used in certain applications where their advantages, such as high hardness, low density, and resistance to corrosion and high temperatures, are desired.
    • Cage: The cage in track bearings is typically made from materials such as steel, brass, or engineered polymers. Steel cages are commonly used due to their strength and durability. Brass cages offer good corrosion resistance and are suitable for certain operating environments. Engineered polymers, such as polyamide (nylon), are used in applications where low friction, noise reduction, or lightweight design is desired.
    • Seals or Shields: The seals or shields used in track bearings are made from various materials depending on the specific requirements. Common materials include rubber or synthetic elastomers for seals, and steel or stainless steel for shields. These materials provide effective protection against contaminants while maintaining proper lubrication within the bearing assembly.
    • Lubrication: Lubricants used in track bearings can vary depending on the application and operating conditions. Common lubrication options include mineral oils, synthetic oils, and greases. The lubricant’s formulation is carefully chosen to provide adequate lubrication, reduce friction and wear, and protect against corrosion and contamination.

    Overall, the choice of materials for track bearings is influenced by factors such as load requirements, operating conditions (including temperature and moisture levels), desired lifespan, and cost considerations. By selecting appropriate materials for each component, track bearings can deliver reliable performance and extended service life in a wide range of industrial and mechanical applications.

    China wholesaler Yoke Type Track Roller Bearings(NAST6ZZ NAST8ZZ NAST10ZZ NAST12ZZ NAST15ZZ NAST17ZZ NAST20ZZ NAST25ZZ NAST30ZZ NAST35ZZ NAST40ZZ NAST45ZZ NAST50ZZ)   bearing driverChina wholesaler Yoke Type Track Roller Bearings(NAST6ZZ NAST8ZZ NAST10ZZ NAST12ZZ NAST15ZZ NAST17ZZ NAST20ZZ NAST25ZZ NAST30ZZ NAST35ZZ NAST40ZZ NAST45ZZ NAST50ZZ)   bearing driver
    editor by CX 2024-02-19

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