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387A-384XD TDO (Two-Row Double-Outer Race) (Imperial)

387A-384XD TDO (Two-Row Double-Outer Race) (Imperial)

The 387A-384XD is a two-row tapered roller bearing with a 2.25″ bore and 3.937″ outer diameter, built from sturdy chrome steel for long-lasting performance. It handles combined loads up to 42200 lbf and is designed for smooth operation in demanding conditions.

Its double-row construction provides extra stability, while the open design allows for easy lubrication and maintenance. 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 cups for straightforward installation. Ideal for heavy-duty applications like industrial gearboxes or machinery where both radial and thrust loads are present.

Weighing 5.53 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, ensuring safe and reliable use. The ABEC-1 rating ensures consistent performance for general industrial needs.

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Product Parameters

  • Part Number 387A-384XD
  • Brand TFL
  • Size 2.25" x 3.937" x 0.864"
  • Bore Dia 2.25"
  • 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 2.76"
  • 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 387A
  • 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 5.53 lb

Features

Why Choose 387A-384XD Bearing for Combined Loads?

387A-384XD Bearing is built with chrome steel rings and rollers, offering robust performance under combined radial and thrust loads.
Its dynamic radial load capacity reaches 42,200 lbf, making it suitable for heavy-duty applications.
The double-row tapered roller design ensures stability and even load distribution.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

Application

Industrial Uses of 387A-384XD Bearing
387A-384XD Bearing is commonly used in heavy machinery like construction equipment, where its double-row design handles combined radial and thrust loads efficiently. The chrome steel construction ensures durability in demanding environments.

In automotive applications, 387A-384XD Bearing supports wheel hubs and differential systems, providing reliable performance under varying loads. Its inch sizing makes it a fit for many American and British vehicle models.

For industrial automation, 387A-384XD Bearing’s open design allows for easy lubrication, maintaining smooth operation in conveyor systems. The standard radial clearance offers flexibility for different operational needs.

Where Is 387A-384XD Bearing Used?
You’ll often find 387A-384XD Bearing in agricultural machinery, where its tapered roller design manages heavy loads effortlessly. The steel cage adds extra strength for long-term use.

In mining equipment, 387A-384XD Bearing’s robust construction withstands harsh conditions, ensuring consistent performance. The ABEC-1 rating provides a good balance of precision and affordability.

Built for Heavy-Duty Use: 387A-384XD Bearing
387A-384XD Bearing excels in forestry equipment, handling uneven loads with ease. Its double-row setup distributes stress evenly, reducing wear.

The bearing’s temperature range makes it suitable for outdoor applications, from cold winters to hot summers. Regular lubrication keeps it running smoothly in high-stress scenarios.

Automotive vs Aerospace: Applications of 387A-384XD Bearing
In automotive systems, 387A-384XD Bearing is ideal for axles, offering stability under heavy loads. Its inch measurements align well with standard vehicle designs.

For aerospace ground equipment, the bearing’s combined load capacity ensures reliability in maintenance tools. The chrome steel rollers provide consistent performance over time.

Q&A

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