SDG Series Bearing Housings

Large & Extra Heavy-Duty Plummer Blocks by JAYCO Engineering India

Designed for Extreme Loads, Large Shafts & Severe Industrial Conditions

JAYCO SDG Series Bearing Housings are large, extra heavy-duty, horizontally split Plummer blocks, engineered for very high radial and axial loads, large shaft diameters, and continuous operation in severe industrial environments.

The SDG series is suitable for spherical roller bearings mounted with adapter sleeves, withdrawal sleeves, or cylindrical bore bearings, making it one of the most versatile heavy-duty bearing housing solutions offered by JAYCO.

These housings are widely used in metal mining, cement plants, rolling mills, crushers, coal handling systems, steel plants, and heavy machinery.

Why Choose JAYCO SDG Series Bearing Housings?

Built for Size. Built for Strength. Built for Harsh Industries.

JAYCO SDG housings are preferred where:

Shaft diameters are very large

Loads are extremely heavy and multidirectional

Shock, vibration, and dust are severe

Long service life with minimal maintenance is required

Their massive construction and precision machining ensure stable, vibration-free operation even under extreme service conditions.

Key Engineering Features of JAYCO SDG Series

✔ Horizontally Split Heavy-Duty Housing

Simplifies assembly, inspection, and bearing replacement

Ideal for very large bearings and shafts

Reduces maintenance downtime

✔ Reinforced Hollow Base Design

Hollow base with a central strengthening rib

Effectively distributes heavy loads from multiple directions

Enhances rigidity and resistance to deformation

✔ Secure Foundation & Alignment

Four elongated foundation bolt holes provided

Ensures strong anchoring to foundation

Machined base pads provided for accurate alignment using wedges

Shaft Diameter & Bearing Compatibility

Shaft diameter range: 125 mm to 710 mm

Suitable for spherical roller bearings with:

Adapter sleeve

Withdrawal sleeve

Cylindrical bore

This wide compatibility makes SDG series ideal for very large rotating equipment.

Located & Non-Located Bearing Options

SDG housings can be supplied as:

Located bearing

Non-located bearing

Bearing seating width is precisely machined for axial positioning

Locating rings are not used, considering heavy-duty application requirements

Lubrication & Sealing System

✔ Grease Lubrication (Standard)

Designed for grease lubrication

Initial grease quantity specified for each housing size

Grease nipple provided for relubrication

✔ Labyrinth & Felt Sealing (Standard)

Labyrinth Seal – TS type with felt seal (FC)

Labyrinth seal specially designed to support felt seal

Enhances sealing efficiency against dust and contaminants

✔ Alternative Seal Options

Felt Seal with V-Ring (FS + TA)
(for plain cylindrical shaft where supplementary V-seal enhances protection)

End Cover & Shaft End Options

End Cover provision available for shaft-end assemblies

Suitable for both through-shaft and shaft-end configurations

Dimensional Series – SDG Series

JAYCO SDG housings are available in seven-dimensional series, covering a very wide bearing range:

SDG 22 – Bearing series 222…

SDG 23 – Bearing series 223…

SDG 30 – Bearing series 230…

SDG 31 – Bearing series 231…

SDG 32 – Bearing series 232…

SDG 40 – Bearing series 240…

SDG 41 – Bearing series 241…

(All available with adapter sleeve / withdrawal sleeve / cylindrical bore options)

Material Options – Selected as per Load Severity

JAYCO SDG Series housings are available in multiple material grades:

Graded Cast Iron – FG 220 (IS 210)

Cast Steel – Grade 280-520 (IS 1030)

SG (Ductile) Iron – Grade 400/15 (IS 1865)

Product Identification by Material

SDGC – Cast Iron housing

SDGS – Cast Steel housing

SDGD – Ductile Iron housing

Bearing Code Identification

For cylindrical bore bearings, product code includes suffix G
(e.g. SDGC 2328 G, SDGS 3044 G)

For withdrawal sleeve bearings, product code includes suffix D
(e.g. SDGC 2328 D, SDGS 3044 D)

This coding ensures clear identification and correct selection.

Typical Applications

Metal & coal mining

Cement crushers & mills

Steel & rolling mills

Heavy conveyors

Coal handling plants

Large industrial drives

Made in India | Extreme-Duty Engineering by JAYCO

JAYCO SDG Series Bearing Housings are:

Designed & manufactured in India

Machined on advanced CNC / VMC / HMC machines

Built with strict dimensional and quality control

Proven in extremely heavy industrial service

Supplied to OEMs, EPC contractors, and global export markets

Why JAYCO Engineering India?

✔ 12+ years of heavy-duty bearing housing manufacturing
✔ Expertise in very large & custom Plummer blocks
✔ Multiple bearing, sleeve & sealing configurations
✔ Export-ready quality & documentation
✔ Strong technical & after-sales support

Need SDG Series Drawings, Prices, or Custom Heavy-Duty Designs?

Contact JAYCO Engineering India for technical consultation, CAD drawings, and competitive quotations tailored to your extreme-load application.