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18690-18620D TDO (Two-Row Double-Outer Race) (Imperial)

18690-18620D TDO (Two-Row Double-Outer Race) (Imperial)

The 18690-18620D is a two-row tapered roller bearing with a 1.8125″ bore and 3.125″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 20400 lbf and is designed for long-lasting performance.

Its double-row construction provides extra stability, while the open design allows for easy lubrication. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is part of the 18600 series and comes with standard cups for straightforward installation. Ideal for heavy-duty applications like truck axles or industrial gearboxes where combined loads are common.

Weighing 1.59 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, ensuring safe and reliable use.

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Product Parameters

  • Part Number 18690-18620D
  • Brand TFL
  • Size 1.8125" x 3.125" x 0.6875"
  • Bore Dia 1.8125"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.125"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 1.3125"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 0.6875"
  • Cone Width Tolerance +0.002" to -0.01
  • Bearing Width Across Cups 1.6248"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.03"
  • Cone Backface Backing Diameter 2.2"
  • Cup Frontface Backing Diameter 2.94"
  • Cage Cone Backface Clearance 0.01"
  • Dynamic Radial Load 20400 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 18690
  • Cup Part Number 18620D
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 18600
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 3030 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 1940 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 5280 lbf
  • Lubrication Required
  • Temperature Range -30° to 110 °C
  • ABEC Rating ABEC-1
  • Radial Clearance Standard (Available in C3/C4/C5)
  • RoHS Compliant
  • REACH Compliant
  • Weight 1.59 lb

Features

How Does 18690-18620D Bearing Handle Combined Loads?

18690-18620D Bearing features a double-row tapered roller design, ideal for handling both radial and thrust loads.
Its chrome steel construction ensures durability, with a dynamic radial load capacity of 20,400 lbf.
The steel cage maintains roller alignment, reducing friction and extending bearing life.
With a standard radial clearance, it offers reliable performance in various industrial applications.

What Makes 18690-18620D Bearing Suitable for Heavy-Duty Applications?

18690-18620D Bearing is built with chrome steel rollers and rings, providing excellent load-bearing capacity.
The double-row design distributes loads evenly, enhancing stability under combined forces.
Its ABEC-1 rating ensures consistent precision, even in demanding environments.
The bearing operates efficiently within a temperature range of -30° to 110°C.

Engineered for Reliability: 18690-18620D Bearing

18690-18620D Bearing’s tapered roller design reduces friction, ensuring smooth operation under heavy loads.
The chrome steel components resist wear, maintaining performance over extended periods.
Its standard radial clearance allows for easy installation and reliable functionality.
With a dynamic radial rating of 5,280 lbf for two rows, it excels in high-load scenarios.

Steel vs Ceramic Bearings: Strengths of 18690-18620D Bearing

18690-18620D Bearing uses chrome steel for both rollers and rings, offering robust strength and durability.
The steel cage ensures proper roller alignment, minimising wear and noise.
Its double-row construction provides superior load distribution, ideal for heavy-duty use.
The bearing’s temperature tolerance makes it versatile for various industrial applications.

Application

Industrial Uses of 18690-18620D Bearing
18690-18620D Bearing is commonly used in heavy machinery, such as construction equipment and agricultural vehicles, where its double-row design handles combined radial and thrust loads effectively. The chrome steel construction ensures durability in tough working conditions.

In automotive applications, 18690-18620D Bearing supports wheel hubs and drivetrain components, providing reliable performance under varying loads. Its inch sizing makes it a preferred choice for American and British vehicle models.

For industrial automation, 18690-18620D Bearing’s open design allows for easy lubrication, extending its service life in high-speed conveyor systems. The tapered roller design also helps maintain precision in repetitive motion tasks.

Where Is 18690-18620D Bearing Used?
You’ll often find 18690-18620D Bearing in mining equipment, where its robust construction withstands extreme loads and harsh environments. The steel cage adds extra strength, making it suitable for heavy-duty use.

In wind turbines, 18690-18620D Bearing plays a key role in rotor assemblies, ensuring smooth rotation under varying wind conditions. Its standard radial clearance options allow for flexibility in different operational settings.

Built for Heavy-Duty Use: 18690-18620D Bearing
18690-18620D Bearing excels in railway applications, particularly in axle boxes where its tapered rollers manage both radial and axial forces. The ABEC-1 rating ensures consistent performance at moderate speeds.

For marine equipment, 18690-18620D Bearing’s corrosion-resistant materials make it ideal for use in damp or saltwater environments. Its dynamic load ratings ensure reliability in critical propulsion systems.

Automotive vs Aerospace: Applications of 18690-18620D Bearing
In automotive systems, 18690-18620D Bearing is often used in differential assemblies, where its combined load capacity improves vehicle stability. The inch measurements simplify integration into existing designs.

For aerospace ground support equipment, 18690-18620D Bearing provides dependable performance in landing gear testing rigs. Its temperature range suits both indoor and outdoor operational conditions.

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