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Double Row Full Complement Cylindrical Roller Bearings NNCF 4920 CV
Double Row Full Complement Cylindrical Roller Bearings NNCF 4920 CV

Double Row Full Complement Cylindrical Roller Bearings NNCF 4920 CV

The NNCF 4920 CV is a double-row cylindrical roller bearing with a 100mm bore and 140mm outer diameter, crafted from durable 52100 chrome steel. It handles combined loads up to 47025 lbf dynamically and spins smoothly at speeds up to 3000 RPM.

Its full-complement design (no cage) maximises roller count for higher load capacity, while the open seal allows easy lubrication with grease or oil. The bearing operates reliably in temperatures from -30°C to 110°C.

This model is interchangeable with SKF bearings, making it a practical choice for replacements. Ideal for heavy machinery or industrial gearboxes where high radial loads are common.

Weighing 1.93kg, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number NNCF 4920 CV
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.02mm to 0
  • Outer Dia 140 mm
  • Outer Dia Tolerance -0.018mm to 0
  • Width 40 mm
  • Width Tolerance -0.20mm to 0
  • System of Measurement Metric
  • Roller Bearing Type Cylindrical
  • For Load Direction Combined
  • Construction Double Row Full Complement
  • Inner Ring Type With Inner Ring
  • Seal Type Open
  • Shoulder Diameter Inner Ring 116.5 mm
  • Raceway Diameter Outer Ring 124.5 mm
  • Width Annular Lubrication Groove Outer Ring 5 mm
  • Diameter Lubrication Hole (Outer Ring) 3.5 mm
  • Chamfer Dimension r1,2(min.) 1.1 mm
  • Chamfer Dimension r3,4(min.) 1.1 mm
  • Permissible Axial Displacement(max.) 2 mm
  • Ring Material 52100 Chrome Steel
  • Roller Material 52100 Chrome Steel
  • Cage Material Full complement (no cage)
  • Dynamic Radial Load 47025 lbf
  • Static Radial Load 90000 lbf
  • Max Speed 3000 rpm
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Weight 1.93 kg

Features

Performance Features of NNCF 4920 CV Bearing

NNCF 4920 CV Bearing is constructed with double-row full complement cylindrical rollers, offering high radial load capacity.
Its dynamic radial load rating reaches 47,025 lbf, making it suitable for heavy-duty applications.
The chrome steel rings and rollers ensure durability and resistance to wear.
With a maximum speed of 3,000 rpm, it provides reliable performance in various industrial settings.

How Does NNCF 4920 CV Bearing Resist Wear?

NNCF 4920 CV Bearing uses 52100 chrome steel for both rings and rollers, enhancing its wear resistance.
The full complement design eliminates the cage, allowing more rollers to handle higher loads.
Its static radial load capacity of 90,000 lbf ensures long-term reliability.
The open seal type facilitates easy lubrication, further extending its service life.

Engineered for Precision: NNCF 4920 CV Bearing

NNCF 4920 CV Bearing features precise dimensions with tight tolerances for bore and outer diameters.
The double-row design distributes loads evenly, reducing stress on individual rollers.
Its permissible axial displacement of 2 mm accommodates slight misalignments.
The annular lubrication groove ensures consistent grease or oil distribution for smooth operation.

Steel vs Ceramic Bearings: Strengths of NNCF 4920 CV Bearing

NNCF 4920 CV Bearing’s 52100 chrome steel construction provides excellent strength and durability.
It handles combined loads efficiently, with a temperature range of -30° to 110°C.
The full complement roller arrangement maximizes load-bearing capacity.
Its compliance with RoHS and REACH standards ensures environmental safety.

Application

Industrial Uses of NNCF 4920 CV Bearing
NNCF 4920 CV Bearing is commonly used in heavy machinery like industrial gearboxes and large conveyor systems, where its double-row design handles high radial loads efficiently. The full complement of rollers ensures maximum load capacity, making it suitable for demanding environments.

In automotive applications, NNCF 4920 CV Bearing supports components such as wheel hubs and drivetrains, providing stability under combined loads. Its chrome steel construction offers durability, even in high-speed scenarios.

For automation equipment, NNCF 4920 CV Bearing is a reliable choice for robotic arms and precision machinery, thanks to its open design and grease lubrication compatibility. The absence of a cage allows for higher load capacity in compact spaces.

Where Is NNCF 4920 CV Bearing Used?
NNCF 4920 CV Bearing finds its place in wind turbines, where its ability to handle radial and axial loads ensures smooth operation. The large bore size and metric dimensions make it a fit for European-designed systems.

In medical imaging devices, NNCF 4920 CV Bearing’s precision and low-noise performance are valuable. The chrome steel rollers provide long-lasting reliability, reducing maintenance needs in critical applications.

Built for Heavy-Duty Use: NNCF 4920 CV Bearing
NNCF 4920 CV Bearing excels in construction equipment like cranes and excavators, where its robust design withstands extreme loads. The grease lubrication option ensures easy maintenance in harsh outdoor conditions.

For printing machinery, NNCF 4920 CV Bearing’s high-speed capability and smooth operation are essential. The open seal type allows for easy inspection and relubrication, extending service life.

Automotive vs Aerospace: Applications of NNCF 4920 CV Bearing
In automotive systems, NNCF 4920 CV Bearing supports heavy-duty axles and transmissions, offering reliability under stress. Its metric sizing ensures compatibility with global vehicle standards.

For aerospace applications, NNCF 4920 CV Bearing’s high load capacity and temperature tolerance make it suitable for landing gear mechanisms. The chrome steel construction resists wear in demanding flight conditions.

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