plumber block bearings

Deep groove ball bearing with seals or shields

Single row deep groove ball bearings with seals or shields are particularly versatile, have low friction and are optimized for low noise and low vibration, which enables high rotational speeds. They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than many other bearing types. The integral sealing can significantly prolong bearing service life because it keeps lubricant in the bearings and contaminants out.Integral sea

ling prolongs bearing service life

Simple, versatile and robust design

Low friction and high-speed capability

Accommodate radial and axial loads in both directions

Require little maintenance

Knowledge and introduction of bearings    :                                                                                                 

Plumber block bearings, also known as plummer blocks, are robust bearing units designed to support and locate shafts, particularly in heavy industrial applications where high power transfer is required. They are engineered to handle substantial radial and axial loads. Here's a detailed introduction to plumber block bearings:

Types and Designs

Plumber block bearings come in various types, including:

• SN Type (High Strength Type): These units are designed for high strength and are available in different series like SN5, SN2, SNZ2, SN6, and SN3. They feature a small recess at the bottom part and a flat leg at the bottom to increase strength. The dimensions are the same as the same series except for the bottom shape, and they use a tapered bore bearing with an adapter.

• SV Type (Standard Type): These include SV5, SV6, and SV30, which are single-type plummer blocks with higher accuracy compared to split types. They also use a tapered bore bearing with an adapter.

• SD Type (Standard Type for Heavy Loads, Large Bore Type): Designed for heavy loads with large spherical roller bearings, these are available in various sizes like SD5, SD2, SD6, SD3, SD30, SD31, SD33, and SD34. They come in floating and fixed side types (indicated by G) and have four mounting bolt holes.

• Stepped Bore Type (SV Type): These are similar to SV5 and SV6 but have a large aperture on one side. Cylindrical bore bearings are attached with nuts and washers.

• Narrow Attachment Width Type (VA Type): Designed for narrow attachment widths, these use a tapered bore bearing with an adapter and have mounting bolt holes at the bottom.

Features and Benefits

• End Covers and Seal Options: Plummer blocks are available with a variety of end covers and special seal options to ensure effective sealing.

• Mounting and Dismounting: They feature a facility for easy mounting and dismounting of pre-assembled shafts.

• Bearing Types: Plummer blocks use self-aligning ball bearings or high-capacity spherical roller bearings and are manufactured from high-strength cast iron grade 200 as standard.

• Lubrication: They provide multi-relubrication points for re-lubrication of the bearing depending on orientation and are used with grease lubrication.

• Sealing Options: NSK offers a range of sealing options including V-ring seals, labyrinth seals, or heavy-duty taconite seals.

Applications

Plummer block bearings are used in applications where high power transfer and heavy industrial loads are common. They are ideal for scenarios requiring robust support and location of shafts, such as in heavy machinery, industrial equipment, and power transmission systems.

Maintenance

Plummer blocks are designed for easy maintenance, with features like split designs allowing for straightforward installation and removal. They also have re-lubrication facilities, which are crucial for ensuring the longevity and performance of the bearings.

In summary, plumber block bearings are critical components in industrial settings, providing a reliable and robust solution for bearing heavy loads and transferring high power. Their design, features, and versatility make them a popular choice in various heavy-duty applications.

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