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    JNL 3100 Series Heavy-Duty Large Size Bearing Housings

    JNL 3100 Series Heavy-Duty Large Size Bearing Housings

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    JNL 3100 Series Heavy-Duty Large Size Bearing Housings
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    Product Description

    The JNL 3100 Series Bearing Housings by JAYCO Engineering India are specially designed heavy-duty split plummer block housings developed for large-size bearings and extremely demanding industrial applications. Built as a reinforced version of the standard JNL Series, these housings provide exceptional structural strength, high load-carrying capability, and reliable performance under severe operating conditions.

    Engineered for industries such as mining, cement, steel, power generation, paper mills, material handling, conveyors, and heavy construction machinery, the JNL 3100 Series delivers long service life, superior rigidity, and easy maintenance in high-vibration and shock-load environments.

    Design & Construction Features

    Heavy-Duty Split Housing Design

    • Horizontally split cap and base construction for simplified installation and maintenance
    • Allows easy bearing inspection and replacement without disturbing shaft alignment
    • Reduces maintenance downtime and improves serviceability

    Reinforced Hollow Base Construction

    • Hollow bottom base specially engineered for large-size bearing applications
    • Reinforced with four side ribs and two central ribs for increased rigidity and load distribution
    • Excellent resistance to vibration, shock loads, and heavy-duty operating conditions
    • Enhanced structural stiffness for demanding industrial environments

    Optimized Heat Dissipation & Lubrication

    • Improved internal cavity design for smooth oil circulation and efficient lubrication
    • Optimized housing geometry enhances heat dissipation through the base and walls
    • Ensures stable bearing operation during continuous heavy-duty service

    Bearing & Shaft Compatibility

    Tapered Bore Bearings with Adapter Sleeves

    • Shaft diameter range: 115 mm to 500 mm

    Cylindrical Bore Bearings

    • Shaft diameter range: 130 mm to 530 mm

    These ranges define the suitable bearing capacities for the JNL 3100 Series.

    Axial Location & Bearing Arrangement

    • Provision available for locating rings for axial positioning of bearings
    • One or two locating rings can be used depending on bearing size and application requirements
    • For very large housings, free axial displacement arrangements are generally preferred
    • Precision-machined for both locating (FX) and non-locating (FR) bearing configurations
    • Product suffixes identify the bearing arrangement type

    Lubrication & Monitoring Features

    • Suitable for both grease and oil lubrication systems
    • Circulating oil lubrication arrangements available for continuous heavy-duty applications
    • Grease nipples provided on cap pads for efficient relubrication
    • For W33 type bearings, grease nipples are centrally positioned on the cap width
    • Side-mounted grease nipples provided for other bearing arrangements
    • Drain plug provided at the base for lubricant maintenance
    • Threaded provision available for oil level indicators
    • Suitable for condition monitoring systems including:
      • Temperature sensors
      • Vibration monitoring probes

    Sealing Arrangements

    To ensure reliable performance in contaminated and severe industrial environments, the JNL 3100 Series offers advanced sealing solutions:

    • TS Labyrinth Seal
    • TNF Taconite Seal (Axial Type)

    Taconite seals provide multi-stage sealing protection and are highly recommended for mining, cement plants, and other extremely dusty applications.

    End Cover & Shaft-End Options

    • End cover arrangements available for closed-end shaft applications
    • End cover designations identified using prefix “A” along with seal type

    Series Range & Bearing Compatibility

    JNL 3000 Series

    Suitable for 230..CK / W33 bearings with adapter sleeve and cylindrical bore arrangements

    JNL 31 Series

    Suitable for 231..CK / W33 bearings with adapter sleeve and cylindrical bore arrangements

    JNL 32 Series

    Suitable for 232..CK / W33 bearings with adapter sleeve and cylindrical bore arrangements

    These housings are dimensionally interchangeable and compatible with bearings from leading international manufacturers including SKF, FAG, NTN, ZKL, and TIMKEN.

    Material Options

    To meet severe industrial load requirements, JAYCO offers the JNL 3100 Series in multiple material grades:

    • Graded Cast Iron FG 220 as per IS 210
    • Cast Steel Grade 280–450 as per IS 1030
    • Spheroidal Graphite (Ductile) Iron Grade 400/15 as per IS 1865

    Material selection can be customized based on application load, vibration intensity, and operating conditions.

    Foundation & Mounting Features

    • Housing feet designed with oval foundation slots for secure mounting and accurate alignment
    • Optional dowel pin arrangements available for extremely heavy loads acting parallel to the base
    • Dowel pin holes provided for precise on-site installation and stability

    Standards & Compliance

    The overall fitment and mounting dimensions of the JNL 3100 Series conform to ISO 113 International Standards, ensuring:

    • Universal adaptability
    • Global dimensional interchangeability
    • Easy replacement and retrofitting compatibility

    Manufactured in India using advanced CNC, VMC, and HMC machining technology under strict quality control, the JNL 3100 Series delivers reliable, durable, and high-performance bearing housing solutions for the world’s most demanding industrial applications.




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