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    SN 3000 & SN 3100 Series Heavy-Duty Plummer Block Housings

    SN 3000 & SN 3100 Series Heavy-Duty Plummer Block Housings

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    SN 3000 & SN 3100 Series Heavy-Duty Plummer Block Housings
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    Product Description

    The SN 3000 & SN 3100 Series Bearing Housings are precision-engineered heavy-duty split plummer block housings designed for 23000 CCK and 23100 K series spherical roller bearings. Developed as an advanced alternative to conventional SN 500 series housings, these units provide higher load-carrying capacity, enhanced structural rigidity, and dependable performance in severe industrial operating conditions.

    Built with a reinforced ribbed construction and optimized lubrication system, the SN 3000 / 3100 Series is ideally suited for demanding applications in cement plants, steel industries, mining operations, power plants, conveyors, crushers, and other heavy machinery installations.

    Key Design Features

    • Heavy-duty one-piece ribbed base casting for superior strength and load distribution
    • Horizontally split housing design for easy mounting, inspection, and maintenance
    • Designed to withstand high radial and axial loads
    • Improved rigidity and durability for extended service life in harsh environments
    • Developed following the robust design philosophy of the SNA Series with application-specific enhancements

    Shaft & Bearing Compatibility

    SN 3000 Series

    • Suitable for 23000 CCK series bearings
    • Shaft diameter range: 110 mm to 260 mm
    • Compatible with adapter sleeves for secure bearing mounting

    SN 3100 Series

    • Suitable for 23100 K series bearings
    • Shaft diameter range: 110 mm to 170 mm
    • Designed for tapered bore bearing arrangements with adapter sleeves

    Lubrication System

    The housings are suitable for both oil and grease lubrication and include advanced lubrication features for reliable bearing performance:

    • Centrally positioned grease nipple on the top cap
    • Efficient grease distribution when used with W33 type bearings featuring lubrication grooves and holes
    • Drain holes with plugs provided on both bottom sides for easy removal of contaminated grease during maintenance

    Sealing Options

    To suit different industrial environments, multiple sealing arrangements are available:

    • TC Felt Seal with felt collar and O-ring
    • TS Labyrinth Seal for improved contamination protection
    • End cover options available for shaft-end and non-shaft-end arrangements:
      • ATC / RTS – Shaft end type
      • ATN / CTS – Non-shaft end type

    Material Options

    J&J offers these housings in multiple material grades based on application requirements:

    • Graded Cast Iron FG 220 as per IS 210
    • Cast Steel FG 280–520 as per IS 1030
    • SG (Ductile) Iron FG 400/15 as per IS 1865

    Foundation & Mounting Features

    • Standard two-bolt foundation design
    • Optional 3-slot and 4-slot mounting arrangements available for:
      • High vibration applications
      • Severe shock load conditions
      • Heavy-duty industrial installations

    Special foundation configurations enhance operational stability and structural rigidity.

    Heavy-Duty Performance

    For extreme heavy-load applications, J&J also offers SN 30 / 31 Series solid base housings manufactured in ductile iron or cast steel for maximum strength and durability.

    International Standards

    All J&J SN 3000 / 3100 Series Bearing Housings are manufactured in accordance with ISO 113:2010 International Standards, ensuring complete dimensional interchangeability and global compatibility.

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