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18685-18620D TDO (Two-Row Double-Outer Race) (Imperial)

18685-18620D TDO (Two-Row Double-Outer Race) (Imperial)

The 18685-18620D is a two-row tapered roller bearing with a 1.75″ bore and 3.125″ outer diameter, built from sturdy chrome steel. It handles combined loads well, with a dynamic radial load capacity of 20400 lbf and a temperature range of -30°C to 110°C.

Its double-row design offers stability under heavy loads, while the open seal allows for easy lubrication. The steel cage ensures durability, making it suitable for long-term use.

This bearing is ideal for industrial machinery or automotive applications where combined radial and thrust loads are common. It meets RoHS and REACH standards for safe operation.

Weighing 1.66 lb, it’s a robust choice for demanding environments. The standard radial clearance can be adjusted to C3, C4, or C5 if needed.

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Product Parameters

  • Part Number 18685-18620D
  • Brand TFL
  • Size 1.75" x 3.125" x 0.6875"
  • Bore Dia 1.75"
  • 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 2.13"
  • 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 18685
  • 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 1.66 lb

Features

How Is 18685-18620D Bearing Engineered for Reliability?

18685-18620D Bearing features a double-row tapered roller design, providing strong resistance to combined radial and thrust loads.
Its chrome steel construction ensures durability, even under heavy dynamic radial loads up to 20,400 lbf.

The precision-engineered cage keeps rollers aligned, reducing friction and extending service life.
With a standard radial clearance, it offers reliable performance in various industrial applications.

Designed for temperatures from -30° to 110°C, 18685-18620D Bearing performs well in demanding conditions.
Its open seal type allows for easy lubrication, ensuring smooth operation over time.

Application

Industrial Uses of 18685-18620D Bearing
18685-18620D 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 efficiently. The chrome steel construction ensures durability in demanding environments.

Where Is 18685-18620D Bearing Used?
You’ll often find 18685-18620D Bearing in automotive applications like truck wheel hubs, where its tapered roller design provides stability under heavy loads. The inch sizing makes it a popular choice for North American vehicles.

Built for Heavy-Duty Use: 18685-18620D Bearing
18685-18620D Bearing excels in industrial gearboxes, offering reliable performance even under continuous operation. Its open design allows for easy lubrication, extending service life in high-temperature conditions.

Automotive vs Aerospace: Applications of 18685-18620D Bearing
In automotive systems, 18685-18620D Bearing supports wheel hubs and axles, while in aerospace, it’s used in auxiliary gearboxes. The ABEC-1 rating ensures consistent performance in both fields.

Perfect Fit for Automation: 18685-18620D Bearing
18685-18620D Bearing is ideal for automated conveyor systems, where its double-row construction reduces maintenance needs. The standard radial clearance ensures smooth operation in repetitive motion applications.

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