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389AS-384DC TDO (Two-Row Double-Outer Race) (Imperial)

389AS-384DC TDO (Two-Row Double-Outer Race) (Imperial)

The 389AS-384DC is a double-row tapered roller bearing with a 2.125″ bore and 3.937″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 42200 lbf and is designed for long-lasting performance in demanding conditions.

Its open design allows for easy lubrication, while the steel cage ensures smooth operation. The bearing works well in temperatures ranging from -30°C to 110°C, making it versatile for various environments.

This model is part of the 385 series and comes with standard radial clearance, though options like C3/C4/C5 are available. Ideal for heavy-duty applications such as industrial gearboxes or machinery where combined loads are common.

Weighing 3.52 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a reliable choice for replacements or new installations.

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Product Parameters

  • Part Number 389AS-384DC
  • Brand TFL
  • Size 2.125" x 3.937" x 0.864"
  • Bore Dia 2.125"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.937"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 1.6875"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 0.864"
  • Cone Width Tolerance +0.002" to -0.01
  • Bearing Width Across Cups 2.0624"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.03"
  • Cone Backface Backing Diameter 2.44"
  • Cup Frontface Backing Diameter 3.68"
  • Cage Cone Backface Clearance 0.03"
  • Dynamic Radial Load 42200 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 389AS
  • Cup Part Number 384DC
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 385
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 6280 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 3810 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 10900 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 3.52 lb

Features

Performance Features of 389AS-384DC Bearing

389AS-384DC Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 42,200 lbf, ensuring reliable performance in demanding conditions.

The double-row tapered roller design enhances stability and load distribution.
With a standard radial clearance, it provides smooth operation across various applications.

389AS-384DC Bearing operates efficiently within a temperature range of -30° to 110°C.
Its steel cage maintains roller alignment, reducing wear and extending service life.

The open seal design allows for easy lubrication, ensuring consistent performance.
This bearing is ideal for heavy-duty applications requiring durability and precision.

Application

Industrial Uses of 389AS-384DC Bearing
389AS-384DC Bearing is commonly used in heavy machinery, such as construction equipment and mining rigs, where its double-row design handles combined radial and thrust loads effectively. The chrome steel construction ensures durability in harsh operating conditions.

In automotive applications, 389AS-384DC Bearing supports axle systems and wheel hubs, providing reliable performance under high stress. Its inch sizing makes it a preferred choice for American and British vehicle manufacturers.

For industrial automation, 389AS-384DC Bearing excels in conveyor systems and robotic arms, where precision and load capacity are key. The open seal design allows for easy lubrication, extending service life in continuous operation.

Where Is 389AS-384DC Bearing Used?
You’ll often find 389AS-384DC Bearing in agricultural machinery, like tractors and harvesters, where its tapered roller design manages heavy loads smoothly. The standard radial clearance ensures consistent performance in varying temperatures.

In material handling equipment, 389AS-384DC Bearing proves useful for forklifts and cranes, thanks to its high dynamic radial rating. The steel cage adds extra strength, making it suitable for repetitive heavy lifting.

Built for Heavy-Duty Use: 389AS-384DC Bearing
389AS-384DC Bearing is ideal for railway applications, particularly in bogie systems, where its double-row construction distributes loads evenly. The ABEC-1 rating ensures reliable precision for such critical uses.

In wind turbines, 389AS-384DC Bearing handles the demanding conditions of rotor shafts, combining durability with ease of maintenance. The open seal type simplifies lubrication in hard-to-reach locations.

Automotive vs Aerospace: Applications of 389AS-384DC Bearing
In automotive drivetrains, 389AS-384DC Bearing supports differential systems, offering a balance of strength and smooth operation. Its inch measurements align well with standard automotive components.

For aerospace ground equipment, 389AS-384DC Bearing is used in aircraft tow tractors and loading systems, where its combined load capacity meets rigorous demands. The temperature range suits both indoor and outdoor applications.

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