SDJ Series (3000, 3100)
SDJ Series Bearing Housings by JAYCO Engineering India
Heavy-Duty Horizontally Split Plummer Blocks for Extreme Industrial Applications
JAYCO SDJ Series Bearing Housings are precision-engineered, heavy-duty Plummer blocks designed for high radial and axial load conditions, especially in cement plants, crushers, mining, steel, power generation, and material-handling industries.
Manufactured in India with advanced heavy machining facilities, JAYCO SDJ housings are built to deliver long service life, superior alignment accuracy, and maintenance-friendly performance under the most demanding operating environments.
JAYCO SDJ housings are extra-large, heavy section bearing housings, suitable for spherical roller bearings of 231 series with adapter sleeves, supporting shaft diameters from Ø320 mm to Ø530 mm.
The robust ribbed construction and precision machining make JAYCO SDJ housings the preferred choice for severe vibration and shock-load applications.
Key Technical Features of JAYCO SDJ Series
✔ Horizontally Split Housing
Enables easy assembly, inspection, and maintenance of bearings.
Ideal for heavy-duty installations where downtime must be minimized.
✔ Extra-Heavy Ribbed Construction
Deep ribs on cap and base ensure uniform load distribution.
Designed to withstand multi-directional loads without deformation.
✔ Strong Base with Foundation Slots
Four elongated foundation slots ensure secure anchoring and precise alignment.
Allows compensation for minor installation deviations.
✔ Large Shaft Diameter Capacity
Suitable for Ø320 mm to Ø530 mm shafts, covering large industrial drives.
Compatible with 231 series spherical roller bearings with adapter sleeves.
Superior Sealing & Lubrication System
✔ Labyrinth Seal (TS Type – Standard)
Precision-machined labyrinth seal with rubber O-ring.
Prevents ingress of dust, moisture, and contaminants.
Allows thermal expansion and slight shaft misalignment without seal damage.
✔ Grease Lubrication (Standard)
Initial grease fill specified for each housing size.
Housing can be modified for oil lubrication upon request.
✔ End Cover Provision
Optional End Covers available based on shaft end configuration.
Material Options – Optimized for Load Conditions
JAYCO offers SDJ bearing housings in multiple material grades to suit different industrial demands:
Cast Iron – FG 220 (IS 210)
Ideal for standard heavy-duty applications.
Cast Steel – Grade 280-580 (IS 1030)
Recommended for high shock and impact loads.
SG (Ductile) Iron – Grade 400/15 (IS 1865)
Enhanced strength and fatigue resistance.
Our engineering team assists customers in selecting the right material based on load, speed, and operating conditions.
Bearing Compatibility
SDJ-30 – Suitable for 231 series bearings with adapter sleeve
SDJ-31 – Suitable for 231 series bearings with adapter sleeve
JAYCO can also custom machine bearing seating to accommodate other bearing series with the same outer diameter, offering unmatched flexibility.
Applications of JAYCO SDJ Bearing Housings
Cement Plant Crushers & Mills
Mining Conveyors & Screens
Steel & Rolling Mills
Power Plant Auxiliaries
Heavy Material Handling Systems
Made in India | Trusted Globally
JAYCO SDJ Series Bearing Housings are:
Designed & manufactured in India
Machined on CNC, VMC, and HMC machines
Inspected with strict quality control
Supplied to OEMs, EPC contractors, and export markets
Looking for SDJ Series Bearing Housing Pricing or Drawings?
Contact JAYCO Engineering India for technical consultation, drawings, and competitive quotations tailored to your application.