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387W-384ED TDO (Two-Row Double-Outer Race) (Imperial)

387W-384ED TDO (Two-Row Double-Outer Race) (Imperial)

The 387W-384ED is a double-row tapered roller bearing with a 2.25″ bore and 3.937″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 42200 lbf and works well 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 comes in standard radial clearance but is also available in C3, C4, or C5 options for different fits.

This model is part of the 385 series, featuring a two-row design for increased load capacity. Ideal for industrial machinery or automotive applications where combined radial and thrust loads are common.

Weighing 3.13 lb, it’s a robust choice for demanding environments. Compliant with RoHS and REACH standards for safe and reliable performance.

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Product Parameters

  • Part Number 387W-384ED
  • 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 1.562"
  • 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 1.9369"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.03"
  • Cone Backface Backing Diameter 2.6"
  • 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 387W
  • Cup Part Number 384ED
  • 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 3.13 lb

Features

Performance Features of 387W-384ED Bearing

387W-384ED Bearing is built with chrome steel rings and rollers, offering robust performance under combined 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 standard radial clearance, it provides reliable operation in various conditions.

387W-384ED Bearing operates efficiently within a temperature range of -30° to 110°C.
The steel cage maintains roller alignment, reducing wear and extending service life.

This bearing requires regular lubrication to maintain optimal performance.
Its ABEC-1 rating ensures consistent precision for industrial applications.

Application

Industrial Uses of 387W-384ED Bearing
The 387W-384ED 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 environments.

In automotive applications, 387W-384ED Bearing supports wheel hubs and differential systems, providing reliable performance under varying loads. The inch sizing makes it compatible with many North American vehicle models.

For industrial conveyor systems, 387W-384ED Bearing’s tapered roller design offers smooth operation and long service life. The open seal type allows for easy lubrication, reducing maintenance downtime.

Where Is 387W-384ED Bearing Used?
You’ll often find 387W-384ED Bearing in agricultural machinery, like tractors and harvesters, where its robust design withstands heavy loads and harsh conditions. The steel cage adds extra strength.

In material handling equipment, 387W-384ED Bearing ensures reliable performance in forklifts and cranes. Its standard radial clearance makes it versatile for various operational demands.

Built for Heavy-Duty Use: 387W-384ED Bearing
The 387W-384ED Bearing excels in forestry equipment, such as log splitters and sawmills, thanks to its high dynamic radial load capacity. The tapered rollers distribute stress evenly.

For railway applications, 387W-384ED Bearing provides stability in axle boxes, handling both radial and axial forces. Its temperature range suits diverse climatic conditions.

Automotive vs Aerospace: Applications of 387W-384ED Bearing
In automotive systems, 387W-384ED Bearing is ideal for drivetrains, offering smooth power transmission. Its inch measurements align with many US-made components.

For aerospace ground support equipment, 387W-384ED Bearing handles heavy loads with precision. The chrome steel rollers ensure consistent performance under stress.

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