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

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

The 389AS-384DRB is a double-row tapered roller bearing with a 2.125″ bore and 4.125″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 42200 lbf and is designed for long-lasting performance.

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

This model is part of the 385 series, with standard radial clearance and ABEC-1 precision. Ideal for heavy-duty applications like truck axles or industrial gearboxes where combined loads are common.

Weighing 3.85 lb, 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 389AS-384DRB
  • Brand TFL
  • Size 2.125" x 4.125" x 0.864"
  • Bore Dia 2.125"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.125"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 1.562"
  • 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 1.9369"
  • 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 3.74"
  • Cage Cone Backface Clearance 0.03"
  • Dynamic Radial Load 42200 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 389AS
  • Cup Part Number 384DRB
  • 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 3.85 lb

Features

How Is 389AS-384DRB Bearing Engineered for Reliability?

389AS-384DRB Bearing features a double-row tapered roller design, providing robust support for combined radial and thrust loads.
Its chrome steel construction ensures durability, with a dynamic radial load capacity of 42,200 lbf.

The steel cage maintains roller alignment, reducing friction and extending the bearing’s operational life.
With a standard radial clearance, it offers reliable performance in various industrial applications.

Designed for temperatures from -30° to 110°C, 389AS-384DRB Bearing performs consistently in diverse environments.
Its open seal type allows for easy lubrication, ensuring smooth operation over time.

Application

Industrial Uses of 389AS-384DRB Bearing
389AS-384DRB Bearing is commonly used in heavy machinery, such as construction equipment and mining tools, 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, 389AS-384DRB Bearing supports axle systems and wheel hubs, providing reliable performance under high stress. Its inch sizing makes it compatible with many American-made vehicles.

For industrial automation, 389AS-384DRB Bearing is ideal for conveyor systems and robotic arms, where precision and load capacity are key. The open seal design allows for easy lubrication, extending its service life.

Where Is 389AS-384DRB Bearing Used?
389AS-384DRB Bearing can be found in agricultural machinery, such as tractors and harvesters, where its tapered roller design manages heavy loads smoothly. The steel cage adds extra strength for long-term use.

In material handling equipment, 389AS-384DRB Bearing ensures smooth operation in forklifts and cranes. Its standard radial clearance offers flexibility for various load conditions.

Built for Heavy-Duty Use: 389AS-384DRB Bearing
389AS-384DRB Bearing excels in forestry equipment, like log splitters, thanks to its robust construction and high dynamic load ratings. The double-row setup distributes stress evenly.

For railway applications, 389AS-384DRB Bearing is used in bogies and drivetrains, where reliability is critical. Its temperature range suits both cold and moderate climates.

Q&A

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