SN Series Bearing Housing

• Heavy-duty split plummer block housing construction
• Suitable for both ball bearings and spherical roller bearings
• Shaft diameter range from 20 mm to 200 mm
• Compatible with direct shaft mounting or adapter sleeve mounting
• Designed for grease lubrication and suitable for relubrication systems
• Equipped with high-quality felt seals for effective dust and contamination protection
• Optional horizontal labyrinth seals available for adverse operating environments
• Eye bolts provided for easy handling and installation (from sizes 224/320/524/620 onwards)
• High-grade grey cast iron construction for superior mechanical strength
• Optional S.G. iron and cast steel construction available on request

• General engineering equipment
• Conveyors & material handling systems
• Industrial fans & blowers
• Agricultural machinery
• Textile & process machinery
• Pumps & rotating equipment
• Manufacturing and processing plants

• 1200K Series
• 2200K Series
• 22200K Series
• 23200K Series

• 1300K Series
• 2300K Series
• 21300K Series
• 22300K Series

SN 200 Series

Suitable for bearings with cylindrical bores:

• 1200 Series

• 2200 Series

• 22200 CC Series

• 23200 CC Series

SN 300 Series

• 1300 Series
• 2300 Series
• 21300 CC Series
• 22300 CC Series

With robust construction, versatile mounting options, and easy maintenance features, SMR SN Series Split Plummer Block Housings provide a reliable and cost-effective bearing housing solution for a wide range of industrial applications.

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.

Engineered for Reliability in Tough Environments

The SN Series Bearing Housings are specifically crafted to handle demanding industrial settings. Built from cast iron with a smooth painted finish, these housings provide excellent corrosion resistance and withstand operational temperatures from -20C up to 120C. The split housing construction enables easy maintenance and bearing replacement, minimizing downtime in essential operations.

Wide Compatibility and High Interchangeability

Designed according to international standard dimensions, the SN Series foot-mounted housings fit a variety of bearing series such as 1200, 2200, 1300, 2300, 22200, and 22300. With bore sizes ranging from 40 mm to 160 mm, these housings deliver versatile installation options for manufacturers, suppliers, and wholesalers across India.

FAQ's of SN Series Bearing Housing:

Q: How do I select the correct SN Series Bearing Housing for my application?

A: To choose the appropriate SN Series Bearing Housing, determine the required bearing series (such as 1200, 2200, 1300, etc.), verify the bore size you need (ranging from 40 mm to 160 mm), and ensure compatibility with the load and environment. Consulting housing numbers (SN204 to SN532) will help match your specific application.

Q: What benefits does the split housing construction provide?

A: The split housing design allows easy access for inspection, maintenance, or replacement of bearings without disconnecting the shaft. This feature significantly reduces downtime and maintenance costs in industrial operations.

Q: Where can SN Series Bearing Housings be used?

A: These housings are ideal for heavy-duty industrial applications, including conveyors, mining, processing plants, and machinery requiring robust, reliable support for rotating shafts. Their versatility and durability make them suitable for a range of industrial sectors.

Q: What kind of bearings are suitable for use with SN Series housings?

A: The SN Series housings are compatible with single-row, pillow block/plummer block bearings from ranges like 1200, 2200, 1300, 2300, 22200, and 22300. Load capacity depends on the specific bearing installed within the housing.

Q: How do the double lip seals benefit bearing longevity?

A: Double lip seals offer enhanced protection against dust, moisture, and other contaminants. This sealing system helps to retain grease lubrication, thereby extending the service interval and overall lifespan of the bearing assembly.

Q: When should I opt for the optional end cover in SN Series Bearing Housings?

A: Choosing the optional end cover is recommended when additional protection from debris or contaminants is needed, especially in particularly harsh environments. It adds another layer of defense for the bearing, further extending operational reliability.