SN Series Bearing Housing

Product Description

SN Series Plummer Blocks

The SMR SN Series is a standard, horizontally split plummer block housing designed for moderate load and speed applications where reliability, ease of maintenance, and cost efficiency are important.

It is a widely accepted housing design used in stable operating conditions where grease lubrication and straightforward installation are sufficient.

What the SN Series Is Best Suited For

The SN Series is typically selected when:

• Operating loads and speeds are moderate
• The application environment is relatively clean
• Grease lubrication is preferred
• A proven, uncomplicated housing design is required

This makes the SN Series a practical choice for many general industrial installations.

How the Housing Works

• The split construction allows the bearing to be installed, inspected, or replaced without removing the shaft, simplifying both initial installation and routine maintenance.
• The housing is designed to provide axial freedom to the bearing, allowing for shaft expansion during operation.
• When axial location is required, it can be achieved by fitting one or two locating rings, depending on the application.

Bearings, Lubrication & Sealing

• The SN Series is primarily intended for adapter sleeve-mounted spherical roller bearings and is designed for grease lubrication.
• Standard felt seals provide basic protection against dust and contaminants, making the series suitable for clean and temperate environments.
• Oil lubrication and heavy sealing arrangements are not intended for this series.

Material & Compatibility

SMR SN Series plummer blocks are manufactured from graded cast iron and follow established international dimensional standards, allowing easy interchangeability with standard SN housings. SN series housings can be manufactured in S.G. Iron and Cast Steel if required.

A Simple Selection Note

• Choose the SN Series when you need a reliable and economical plummer block for moderate operating conditions.
• For higher loads, enhanced sealing, or more demanding environments, SMR offers SNA, SNH, and SNL series housings.

Technical Details

Exact dimensions, shaft sizes, bearing compatibility, and accessory options are provided in the SMR SN Series catalogue.

SMR can assist in confirming the most suitable housing and bearing arrangement for your application.

Technical Details