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

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

The 385A-384DRB is a double-row tapered roller bearing with a 2″ bore and 4.125″ outer diameter, built from sturdy chrome steel for long-lasting performance.
It handles combined loads with a dynamic radial capacity of 42,200 lbf and a thrust rating of 3,810 lbf per row, making it suitable for heavy-duty applications.
The open design allows for easy lubrication, while the steel cage ensures smooth operation even under high stress.
Ideal for industrial machinery or vehicle axles where robust load-bearing is needed, it works in temperatures from -30°C to 110°C.

This bearing features standard radial clearance and meets ABEC-1 precision standards, offering reliable performance without unnecessary complexity.
Its double-row construction provides extra stability, distributing loads evenly across both rows of rollers.
Weighing 4.04 lb, it’s a solid choice for applications requiring durability in imperial-sized equipment.
Compliant with RoHS and REACH, it’s a safe option for various industrial environments.

With its tapered roller design, this bearing efficiently manages both radial and thrust loads in one compact unit.
The precise tolerances on cup and cone widths ensure a secure fit in demanding setups.
Perfect for gearboxes or heavy equipment where space and strength are key considerations.

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Product Parameters

  • Part Number 385A-384DRB
  • Brand TFL
  • Size 2" x 4.1250" x 0.864"
  • Bore Dia 2"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.1250"
  • 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 2.4"
  • 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 385A
  • 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 4.04 lb

Features

How Is 385A-384DRB Bearing Engineered for Reliability?

385A-384DRB Bearing features a double-row tapered roller design, providing strong resistance to combined radial and thrust loads.
Its chrome steel construction ensures durability, with a dynamic radial load capacity of 42,200 lbf.
The steel cage maintains roller alignment, reducing friction and extending operational life.
With a standard radial clearance, it offers reliable performance in various industrial applications.

What Makes 385A-384DRB Bearing Suitable for High-Temperature Applications?

385A-384DRB Bearing operates effectively within a temperature range of -30° to 110°C, making it suitable for demanding environments.
Its chrome steel rings and rollers resist heat-induced wear, ensuring consistent performance.
The open seal design allows for easy lubrication, maintaining smooth operation under high temperatures.
This bearing is ideal for applications where thermal stability is crucial.

Built for Durability: 385A-384DRB Bearing

385A-384DRB Bearing is constructed with high-quality chrome steel, offering excellent wear resistance.
Its double-row design distributes loads evenly, enhancing longevity and reducing maintenance needs.
The steel cage ensures proper roller alignment, minimising friction and noise.
With a weight of 4.04 lb, it balances strength and practicality for heavy-duty use.

Steel vs Ceramic Bearings: Strengths of 385A-384DRB Bearing

385A-384DRB Bearing uses chrome steel for both rings and rollers, providing superior strength and cost-effectiveness.
Its dynamic radial load rating of 42,200 lbf makes it reliable for heavy industrial applications.
The steel cage design ensures stability and reduces operational noise.
This bearing is a practical choice where durability and performance are prioritised.

Application

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

Where Is 385A-384DRB Bearing Used?
You’ll often find 385A-384DRB Bearing in automotive applications like truck wheel hubs, where its tapered roller design supports both radial and thrust loads. The inch sizing makes it a popular choice for North American vehicles.

Built for Heavy-Duty Use: 385A-384DRB Bearing
385A-384DRB Bearing excels in industrial gearboxes, providing reliable performance under high stress. Its open design allows for easy lubrication, extending service life in continuous operation.

Automotive vs Aerospace: Applications of 385A-384DRB Bearing
In automotive systems, 385A-384DRB Bearing is ideal for axles and differentials, while its precision also suits aerospace landing gear components. The standard radial clearance offers flexibility for various load conditions.

Key Fields for 385A-384DRB Bearing
385A-384DRB Bearing is a go-to for agricultural machinery, such as tractors and harvesters, thanks to its robust construction. The steel cage adds stability, ensuring smooth rotation under heavy loads.

Q&A

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