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

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

The 389AS-384D is a two-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.

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 385 series and comes with standard radial clearance, though C3/C4/C5 options are available. Ideal for heavy-duty applications like industrial gearboxes or vehicle axles.

Weighing 3.52 lb, it’s a robust choice for demanding environments. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number 389AS-384D
  • 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 384D
  • 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

Why Choose 389AS-384D Bearing for Combined Loads?

389AS-384D 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 42,200 lbf.

The steel cage maintains roller alignment, reducing friction and extending service life.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

389AS-384D Bearing’s standard radial clearance options provide flexibility for different applications.
Its open design simplifies lubrication, ensuring smooth operation over time.

Application

Industrial Uses of 389AS-384D Bearing
389AS-384D Bearing is commonly used in heavy machinery like construction equipment, where its double-row design handles combined radial and thrust loads effectively. The chrome steel construction ensures durability in demanding environments.

Where Is 389AS-384D Bearing Used?
You’ll often find 389AS-384D Bearing in agricultural machinery, supporting components like gearboxes and axles. Its inch sizing makes it a reliable choice for North American equipment manufacturers.

Built for Heavy-Duty Use: 389AS-384D Bearing
389AS-384D Bearing excels in mining applications, where its tapered roller design manages high dynamic loads. The open seal type allows for easy lubrication in dusty conditions.

Automotive vs Aerospace: Applications of 389AS-384D Bearing
In automotive systems, 389AS-384D Bearing supports heavy-duty truck axles, while in aerospace, it’s used in landing gear assemblies. The ABEC-1 rating provides sufficient precision for both applications.

Essential Roles of 389AS-384D Bearing
389AS-384D Bearing plays a key role in industrial fans, where its standard radial clearance accommodates thermal expansion. The steel cage offers good wear resistance for continuous operation.

Q&A

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