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

The 387W-384DC 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 is designed for long-lasting performance.

Its open design allows for easy lubrication, while the steel cage ensures smooth operation. The bearing works well in temperatures from -30°C to 110°C, making it versatile for various conditions.

This model is part of the 385 series and comes with standard radial clearance, though C3/C4/C5 options are available. Ideal for heavy-duty applications like truck axles or industrial gearboxes where combined loads are common.

Weighing 3.33 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a reliable choice for replacements or new installations.

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Description

Features

Application

Q&A

Product Parameters

Part Number 387W-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 2.6"
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 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 3.33 lb

Features

Performance Features of 387W-384DC Bearing

387W-384DC 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 efficient load distribution.
With a standard radial clearance, it provides reliable operation in various industrial settings.

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

Application

Industrial Uses of 387W-384DC Bearing
387W-384DC 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. The chrome steel construction ensures durability in tough working conditions.

In automotive applications, 387W-384DC Bearing supports axle systems and wheel hubs, providing reliable performance under high stress. Its inch sizing makes it compatible with many North American vehicle models.

For industrial conveyor systems, 387W-384DC Bearing’s tapered roller design offers smooth operation and long service life. The open seal type allows for easy lubrication, which is essential for continuous use.

What Makes 387W-384DC Bearing a Preferred Choice?
387W-384DC Bearing is ideal for agricultural machinery, where its robust construction withstands dust and debris. The standard radial clearance ensures consistent performance in varying temperatures.

In material handling equipment, 387W-384DC Bearing’s high dynamic load capacity makes it suitable for heavy lifting. The steel cage adds extra strength, reducing wear over time.

Built for Heavy-Duty Use: 387W-384DC Bearing
387W-384DC Bearing excels in forestry equipment, handling uneven loads and rough terrain with ease. Its ABEC-1 rating provides sufficient precision for most industrial needs.

For railway applications, 387W-384DC Bearing’s tapered rollers ensure smooth rotation under heavy loads. The inch measurements simplify replacements in older systems.

Automotive vs Aerospace: Applications of 387W-384DC Bearing
In automotive settings, 387W-384DC Bearing is often found in drivetrains, where its combined load capacity is crucial. The open design allows for regular maintenance.

For aerospace ground support equipment, 387W-384DC Bearing’s temperature range suits various climates. Its chrome steel rollers resist wear, even with frequent use.