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

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

The 389A-384XD is a two-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 42,200 lbf and operates smoothly in temperatures from -30°C to 110°C.

Its double-row design provides extra stability, while the open seal allows for easy lubrication. The steel cage ensures durability, making it suitable for heavy-duty applications.

This bearing is ideal for industrial machinery or vehicle axles where high radial and thrust loads are common. It comes in standard radial clearance but is also available in C3, C4, or C5 options for different needs.

Weighing 5.76 lb, it’s a robust choice for demanding environments. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

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Product Parameters

  • Part Number 389A-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 2.4"
  • 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 389A
  • 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

Performance Features of 389A-384XD Bearing

389A-384XD 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 heavy-duty applications.

The double-row tapered roller design of 389A-384XD Bearing enhances stability and load distribution.
This construction allows it to handle both radial and thrust loads efficiently.

389A-384XD Bearing operates within a temperature range of -30° to 110°C, suitable for various environments.
The steel cage maintains roller alignment, reducing wear and extending service life.

With standard radial clearance options, 389A-384XD Bearing provides flexibility for different applications.
Its open design simplifies lubrication, ensuring smooth operation over time.

Application

Industrial Uses of 389A-384XD Bearing
The 389A-384XD Bearing is commonly used in heavy machinery, such as construction equipment and mining vehicles, where its double-row design handles combined radial and thrust loads effectively. Its chrome steel construction ensures durability in tough working conditions.

What Makes 389A-384XD Bearing a Preferred Choice?
In automotive applications, 389A-384XD Bearing is often found in wheel hubs and differential systems, providing reliable performance under high stress. The inch sizing makes it a good fit for American-made vehicles and machinery.

Built for Heavy-Duty Use: 389A-384XD Bearing
This bearing excels in industrial gearboxes and conveyor systems, where its tapered roller design manages high dynamic loads. The open seal type allows for easy lubrication, extending its service life in demanding environments.

Automotive vs Aerospace: Applications of 389A-384XD Bearing
While 389A-384XD Bearing is popular in truck axles and off-road vehicles, it also finds use in aerospace landing gear systems. Its standard radial clearance and ABEC-1 rating balance precision and durability for varied applications.

Perfect Fit for Automation: 389A-384XD Bearing
In automated production lines, 389A-384XD Bearing supports robotic arms and assembly systems with smooth, consistent motion. The steel cage adds stability, making it suitable for high-precision tasks.

Q&A

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