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

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

The 389AS-384XD is a double-row tapered roller bearing with a 2.125″ bore and 3.937″ outer diameter, built from sturdy chrome steel for long-lasting performance. It handles combined loads with a dynamic radial capacity of 42200 lbf and operates smoothly in temperatures from -30°C to 110°C.

Its open design allows for easy lubrication, while the steel cage ensures durability under heavy use. The bearing is designed for standard radial clearance but can also be ordered in C3, C4, or C5 configurations for specific needs.

This model is part of the 385 series, featuring a double outer race for enhanced load distribution. Ideal for industrial machinery, gearboxes, or heavy equipment where combined radial and thrust loads are common.

Weighing 5.76 lb, it’s a robust choice for demanding applications. Compliant with RoHS and REACH standards, it meets ABEC-1 precision requirements for reliable operation.

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Product Parameters

  • Part Number 389AS-384XD
  • 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 3.764"
  • 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 4.1389"
  • 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 384XD
  • 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 5.76 lb

Features

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

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

The precision tolerances on bore and outer diameters enhance alignment, reducing wear during operation.
With a standard radial clearance, it offers reliable performance in various industrial applications.

Designed for a temperature range of -30° to 110°C, 389AS-384XD Bearing performs well in diverse environments.
The steel cage maintains roller alignment, contributing to extended service life.

Lubrication is required for optimal performance, ensuring smooth operation under heavy loads.
Its ABEC-1 rating balances precision and cost-effectiveness for general industrial use.

Application

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

In automotive applications, 389AS-384XD Bearing supports wheel hubs and differential systems, providing reliable performance under varying loads. The imperial sizing makes it a good fit for North American vehicle models.

For industrial automation, 389AS-384XD Bearing works well in conveyor systems and robotic arms, thanks to its open design and easy lubrication. The standard radial clearance allows for smooth operation in high-speed scenarios.

Where Is 389AS-384XD Bearing Used?
You’ll often find 389AS-384XD Bearing in agricultural machinery, such as tractors and harvesters, where its tapered roller design handles heavy loads with ease. The steel cage adds extra strength for long-term use.

In manufacturing plants, 389AS-384XD Bearing is a go-to for gearboxes and pulleys, offering consistent performance even under continuous operation. Its ABEC-1 rating ensures reliable precision for general industrial needs.

Built for Heavy-Duty Use: 389AS-384XD Bearing
The 389AS-384XD Bearing excels in applications like crane systems and lifting equipment, where its dynamic radial load capacity of 42,200 lbf comes in handy. The double-row construction distributes stress evenly for extended lifespan.

For railway and transportation systems, 389AS-384XD Bearing provides stability in axle boxes and bogies. Its temperature range of -30° to 110°C makes it suitable for diverse climates.

Automotive vs Aerospace: Applications of 389AS-384XD Bearing
In automotive settings, 389AS-384XD Bearing is ideal for drivetrain components, balancing radial and thrust loads effectively. Its inch measurements align well with standard automotive designs.

For aerospace ground support equipment, 389AS-384XD Bearing offers reliable performance in loading systems and maintenance tools. The chrome steel rollers ensure minimal wear even with frequent use.

Q&A

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