SN 30 Series Bearing Housing

SMR SN 30 Series Split Plummer Block Housings are specially engineered for heavy-duty industrial applications requiring reliable support for spherical roller bearings. Designed for high load-carrying capacity, easy installation, and long service life, these bearing housings provide excellent operational reliability in demanding working conditions.

The SN 30 Series is specifically developed for use with 230 Series spherical roller bearings, including bearings with tapered bores mounted on adapter sleeves for plain cylindrical shafts. These robust plummer block housings are ideal for industries where strength, easy maintenance, and dependable bearing performance are essential.

Key Features of SMR SN 30 Series Bearing Housings

• Heavy-duty split plummer block housing design for easy mounting and maintenance
• Suitable for spherical roller bearings
• Shaft diameter range from 110 mm to 280 mm

Compatible with:

• Direct shaft mounting
• Adapter sleeve mounting
• Withdrawal sleeve mounting

• Designed for efficient grease lubrication

• Suitable for relubrication systems

• Equipped with high-quality felt seals for contamination protection

• Manufactured from high-grade grey cast iron for superior strength and durability

• Optional S.G. iron (ductile iron) construction available on request

• Integrated eye bolts provided from size 30 onwards for easy handling and installation

Engineered for Versatile Bearing Arrangements

SMR SN 30 Series housings are suitable for:

• Locating bearing arrangements
• Non-locating bearing arrangements
• Cross-locating bearing arrangements

This flexibility makes them suitable for a wide range of rotating equipment and heavy industrial machinery operating under demanding load conditions.

Easy Maintenance & Enhanced Reliability

The split housing construction allows quick access to bearings, reducing maintenance time and simplifying inspection and replacement procedures. For shaft-end applications, SMR can also supply special end covers on request to provide additional protection and sealing performance.

Applications of SMR SN 30 Series Plummer Blocks

SMR SN 30 Series bearing housings are widely used in:

• Steel plants & rolling mills
• Mining & cement industries
• Material handling systems
• Crushers & conveyors
• Heavy-duty industrial fans & blowers
• Power generation equipment
• Process and manufacturing industries

With rugged construction, versatile mounting options, and reliable sealing performance, SMR SN 30 Series Split Plummer Block Housings offer a durable and cost-effective solution for heavy industrial bearing 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.

Technical Details

Versatile and Durable Design

The SN 30 Series Bearing Housing is meticulously engineered using high-grade cast iron for strength and longevity. Its corrosion-resistant coating protects against harsh industrial environments, while the precisely machined finish ensures dependable alignment. With a foot-mounted structure, the housing guarantees secure installation on various machine frames. The removable cap allows for quick inspection and maintenance, reducing machine downtime.

Efficient Maintenance and Operation

Maintenance is simplified thanks to the split-type housing with a removable top cap and a re-lubrication provision, making it easy to service bearings without full disassembly. Double lip seals keep contaminants away from lubricated surfaces, improving operational life. An anti-rotation pin provides added stability, while optional end covers further shield components from dust and debris, supporting reliable long-term performance.

FAQ's of SN 30 Series Bearing Housing:

Q: How is the SN 30 Series Bearing Housing installed and mounted?

A: This housing features a foot-mounted design that allows for secure bolting to foundational supports in various machinery. The anti-rotation pin ensures a stable installation, preventing movement even during heavy operation.

Q: What industrial applications can this bearing housing be used for?

A: It is suitable for a wide spectrum of industrial applications such as conveyors, fans, mining machinery, and other heavy-duty equipment, thanks to its rugged construction and compatibility with a range of bearing types.

Q: When should the re-lubrication provision be used?

A: Routine maintenance schedules dictate when re-lubrication is needed, but the provision allows easy access for grease lubrication without dismantling the housing. This keeps bearings running smoothly and extends operational lifespan.

Q: Where can I find compatible bearings for the SN 30 Series housing?

A: The housing is designed for compatibility with standard single-row roller and ball bearings from the SN 500 and SN 600 series. Refer to size specifications or consult your supplier to select the correct bearing for your application.

Q: What are the benefits of the removable cap and optional end covers?

A: The removable cap facilitates quick inspection and maintenance, reducing downtime, while optional end covers provide extra protection against contaminants, helping preserve bearing life in dusty or dirty environments.

Q: How does the corrosion-resistance coating improve performance?

A: The special coating shields the cast iron housing from rust and corrosion, ensuring reliable performance and longevity even in challenging, moisture-prone workplaces.

Q: Are there specific temperature limits for operating this housing?

A: The SN 30 Series Bearing Housing operates effectively in temperatures ranging from -20C to 120C, making it suitable for most industrial settings in India and abroad.