Double Row Cylindrical Roller BearingsNNUB4920-70 Bearing

VAFEM is a diversified company that provides a wide range of high-quality products including Double Row Cylindrical Roller Bearings. These bearings are designed to support heavy radial loads while maintaining their structural integrity. 

One of the key advantages of VAFEM's Double Row Cylindrical Roller Bearings is their ability to handle high speeds and maintain stability under extreme conditions. This makes them ideal for use in a variety of demanding applications such as construction equipment, wind turbines, and mining machinery. 

VAFEM's commitment to quality is evident in the rigorous testing process that each Double Row Cylindrical Roller Bearing goes through before it is released for use. This ensures that each bearing is reliable, durable, and able to provide consistent performance over its lifespan. 

In addition to their superior performance, VAFEM's Double Row Cylindrical Roller Bearings are also cost-effective and easy to maintain. This makes them an attractive option for both small and large businesses alike. 

Overall, VAFEM's Double Row Cylindrical Roller Bearings are a top-quality product that can provide reliable performance for a wide range of applications. With their commitment to quality and customer satisfaction, VAFEM is a trusted name in the bearing industry.


Double Row Cylindrical Roller Bearings NNUB4920-70 are specially designed to offer high rotational speed, superior load-bearing capacity, and excellent radial stiffness. These bearings are ideal for heavy-duty applications that require precision and high reliability.

The NNUB4920-70 bearings feature two rows of rollers and a split inner ring that ensures easy installation and removal. The cylindrical rollers are arranged parallel to the axis and are guided by two ribs on the inner ring and one rib on the outer ring.

The bearings have a bore diameter of 100mm, an outer ring diameter of 140mm, and a width of 70mm. They are manufactured with high-quality materials such as premium-grade steel, ensuring long-lasting durability and reliability in demanding applications. The bearings also have exceptional seal performance to protect against contaminants and dust.

The NNUB4920-70 bearings can handle significant axial loads in both directions and can support high radial loads. They are also suitable for high-speed applications, thanks to their optimized roller and cage design.

These bearings are widely used in various industries, including machine tooling, steel, paper, and mining equipment. Their high load capacity and reliable performance have earned them a reputation as a top choice for critical applications.

In summary, the Double Row Cylindrical Roller Bearings NNUB4920-70 provide outstanding performance and reliability for heavy-duty applications that require precision and high load-bearing capacity. They are ideal for use in harsh environments and are sure to meet your needs for years to come.


VAFEM (Shang Hai) Bearing Technology Co.,Ltd
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Double Row Cylindrical Roller Bearings

Dimension and Parameters

Bearing NO.
Cylindrical bore :NNUB4920-70
Tapered bore :-
Boundary dimensions(mm)
d :100
D :140
B/C :70/40
r 1.2min :1.1
r3.4min :1.1
Basic load ratings(kN)
Cr :128
Cor :255
Limiting speed(rpm)
Speed Ratings :4800
Abutment and fillet dimensions(mm)
da max :111
Da max :133.5
ra max :1
rb max :1
Weight (kg)
Refer :2.5
Part Number:
d:
D:
B:
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