385-384DRB TDO (Two-Row Double-Outer Race) (Imperial)

The 385-384DRB is a double-row tapered roller bearing with a 2.1654″ bore and 4.125″ outer diameter, crafted from sturdy chrome steel. 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 open design allows for easy lubrication, while the steel cage ensures durability. The bearing is built to last, with standard radial clearance and ABEC-1 precision for reliable performance.

This model is ideal for heavy-duty applications like truck axles or industrial gearboxes where combined loads are common. Its double-row construction provides extra stability under high stress.

Weighing 3.78 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for various industrial uses.

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Description

Features

Application

Q&A

Product Parameters

Part Number 385-384DRB
Brand TFL
Size 2.1654" x 4.125" x 0.864"
Bore Dia 2.1654"
Bore Dia Tolerance +0.005" to 0
Outer Dia 4.125"
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 2.56"
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 385
Cup Part Number 384DRB
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 3.78 lb

Features

Performance Features of 385-384DRB Bearing

385-384DRB 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 temperature range of -30° to 110°C, it performs reliably in various conditions.

How Is 385-384DRB Bearing Engineered for Reliability?

385-384DRB Bearing features a steel cage that maintains roller alignment, reducing friction and wear.
The standard radial clearance options (C3/C4/C5) allow for flexibility in different operational needs.
Its double-row construction enhances load-bearing capacity and longevity.
The open seal design simplifies lubrication, ensuring smooth operation.

Built for Durability: 385-384DRB Bearing

385-384DRB Bearing’s chrome steel components resist wear, extending its service life.
The tapered roller design efficiently handles both radial and thrust loads.
With an ABEC-1 rating, it provides consistent precision in various applications.
The bearing’s construction ensures reliable performance even in demanding environments.

Application

Industrial Uses of 385-384DRB Bearing
The 385-384DRB Bearing is commonly used in heavy machinery, such as construction equipment and mining tools, where its double-row design handles combined radial and thrust loads effectively. Its chrome steel construction ensures durability in demanding environments.

In automotive applications, 385-384DRB Bearing supports axle systems and wheel hubs, providing reliable performance under varying loads. The imperial sizing makes it a preferred choice for North American vehicle manufacturers.

For industrial automation, 385-384DRB Bearing’s open design allows for easy lubrication, ensuring smooth operation in conveyor systems and robotic arms. The steel cage enhances stability during high-speed rotations.

What Makes 385-384DRB Bearing a Preferred Choice?
The 385-384DRB Bearing’s tapered roller design offers excellent load distribution, making it ideal for gearboxes and power transmission systems. Its standard radial clearance ensures compatibility with a wide range of machinery.

In agricultural equipment, 385-384DRB Bearing withstands harsh conditions, such as dust and moisture, while maintaining performance. The ABEC-1 rating provides sufficient precision for most farming applications.

Built for Heavy-Duty Use: 385-384DRB Bearing
The 385-384DRB Bearing excels in applications like crane booms and heavy-duty presses, where its dynamic radial load capacity of 42,200 lbf is crucial. The double-row construction enhances stability under uneven loads.

For railway systems, 385-384DRB Bearing ensures reliable performance in bogies and axle boxes, thanks to its robust chrome steel rollers. The temperature range of -30° to 110°C suits various climatic conditions.

Automotive vs Aerospace: Applications of 385-384DRB Bearing
In automotive systems, 385-384DRB Bearing is often found in differentials and drivetrains, where its combined load capacity is essential. The inch measurements align with standard automotive components.

For aerospace ground equipment, 385-384DRB Bearing supports landing gear testing rigs and maintenance tools. Its compliance with RoHS and REACH standards ensures environmental safety.