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

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

The 387A-384DC 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, making it suitable for heavy-duty applications. The open design allows for easy lubrication and maintenance.

Its double-row construction provides stability under radial and thrust loads, with a dynamic radial rating of 10900 lbf for two rows. The steel cage ensures smooth operation even at high loads.

This bearing works in temperatures from -30°C to 110°C, ideal for industrial machinery or vehicle axles. It comes with standard radial clearance but is also available in C3/C4/C5 options.

Weighing 3.3 lb, it’s a robust choice for demanding environments. Compliant with RoHS and REACH standards, it offers reliable performance in various applications.

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Product Parameters

  • Part Number 387A-384DC
  • 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 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 2.76"
  • 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 387A
  • Cup Part Number 384DC
  • 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 3.3 lb

Features

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

387A-384DC Bearing is built with chrome steel rings and rollers, offering strong resistance to both radial and thrust loads.
Its dynamic radial load capacity reaches 42,200 lbf, making it suitable for heavy-duty applications.
The steel cage ensures proper roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

How Is 387A-384DC Bearing Engineered for Reliability?

387A-384DC Bearing features a double-row tapered roller design, providing stability under combined loads.
The chrome steel construction enhances durability, while the steel cage maintains roller positioning.
Its dynamic radial rating for two rows reaches 10,900 lbf, ensuring long-term performance.
The standard radial clearance options allow for flexibility in different applications.

Built for Durability: 387A-384DC Bearing

387A-384DC Bearing’s chrome steel rollers and rings are designed to withstand high stress and wear.
The double-row construction distributes loads evenly, improving reliability and lifespan.
With a dynamic thrust rating of 3,810 lbf, it handles demanding operational conditions.
Its ABEC-1 rating ensures consistent precision in various industrial settings.

Steel vs Ceramic Bearings: Strengths of 387A-384DC Bearing

387A-384DC Bearing uses chrome steel for both rollers and rings, offering excellent strength and durability.
The steel construction provides reliable performance under heavy combined loads and high temperatures.
Its dynamic radial load capacity of 42,200 lbf makes it a robust choice for industrial applications.
The steel cage ensures smooth operation and reduces maintenance needs over time.

Application

Industrial Uses of 387A-384DC Bearing
The 387A-384DC Bearing is commonly used in heavy machinery, such as construction equipment and agricultural vehicles, where its double-row design handles combined radial and thrust loads effectively. Its chrome steel construction ensures durability in demanding environments.

Where Is 387A-384DC Bearing Used?
You’ll often find the 387A-384DC Bearing in automotive applications, particularly in wheel hubs and differential systems. Its tapered roller design provides smooth performance under high stress and varying load conditions.

Built for Heavy-Duty Use: 387A-384DC Bearing
This bearing excels in industrial gearboxes and conveyor systems, thanks to its robust steel cage and high dynamic load capacity. The open seal type allows for easy lubrication, extending its service life.

Automotive vs Aerospace: Applications of 387A-384DC Bearing
In automotive settings, the 387A-384DC Bearing supports heavy loads in truck axles and drivetrains. While not typically used in aerospace, its precision makes it suitable for certain ground support equipment.

Key Fields for 387A-384DC Bearing
The 387A-384DC Bearing is a reliable choice for mining equipment, where its ability to handle shock loads and harsh conditions is crucial. Its standard radial clearance ensures consistent performance over time.

Q&A

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