• Double Row Cylindrical Roller Bearings
  • Double Row Cylindrical Roller Bearings
Double Row Cylindrical Roller Bearings

Double Row Cylindrical Roller Bearings

BCHH Double Row Cylindrical Roller Bearings integrate our 20+ years of precision manufacturing expertise 

with ISO 9001 certified quality systems to deliver superior load-bearing performance. These advanced 

bearings feature two rows of precision-ground rollers arranged in a compact design, providing significantly

 enhanced radial load capacity compared to single row versions. The optimized internal geometry and 

high-grade steel construction ensure excellent rotational accuracy, operational stability, and extended 

service life in heavy-duty applications.


Applications:

Heavy industrial gearboxes and large reducers

Machine tool main spindles and rotating components

Wind turbine generator systems

Mining and construction machinery

Steel mill equipment and rolling mills

Large electric motors and generators


Maximize your equipment's load capacity with BCHH Double Row Cylindrical Roller Bearings. Contact our

 engineering team today for technical specifications and competitive pricing. Request samples to test 

performance in your application.


Product Parameters

Double Row Cylindrical Roller Bearings
Bearing NO.
Cylindrical bore :NNU4084
Tapered bore :NNU4084K
Boundary dimensions(mm)
d :420
D :620
B/C :200
r 1.2min :5
r3.4min :5
Basic load ratings(kN)
Cr :3150
Cor :7100
Limiting speed(rpm)
Speed Ratings :900
Abutment and fillet dimensions(mm)
da max :460
Da max :600
ra max :4
rb max :4
Weight (kg)
Refer :183

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