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386-384DRB TDO (Two-Row Double-Outer Race) (Imperial)

386-384DRB TDO (Two-Row Double-Outer Race) (Imperial)

The 386-384DRB is a double-row tapered roller bearing with a 2.184″ bore and 4.125″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 35600 lbf and is designed for long-lasting performance in tough conditions.

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 environments.

This model features a standard radial clearance and is ABEC-1 rated for reliable precision. Ideal for heavy-duty applications like industrial gearboxes or vehicle axles where combined loads are common.

Weighing 3.74 lb, it’s a robust choice for machinery requiring durable, high-capacity bearings. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number 386-384DRB
  • Brand TFL
  • Size 2.184" x 4.125" x 0.864"
  • Bore Dia 2.184"
  • 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 35600 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 386
  • 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) 5300 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 3210 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 9230 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 3.74 lb

Features

Performance Features of 386-384DRB Bearing

386-384DRB Bearing is constructed with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 35,600 lbf, ensuring reliable performance in demanding applications.

The double-row tapered roller design of 386-384DRB Bearing provides stability and even load distribution.
This reduces wear and extends the bearing’s service life under heavy-duty conditions.

386-384DRB Bearing operates efficiently within a temperature range of -30° to 110°C.
Its standard radial clearance and ABEC-1 rating make it suitable for various industrial applications.

With a weight of 3.74 lb, 386-384DRB Bearing balances durability and ease of installation.
The steel cage ensures proper roller alignment, enhancing overall performance and reliability.

Application

Industrial Uses of 386-384DRB Bearing
The 386-384DRB Bearing is commonly used in heavy machinery like construction equipment and mining drills, where its double-row design handles combined radial and thrust loads efficiently. Its chrome steel construction ensures durability in tough working conditions.

Where Is 386-384DRB Bearing Used?
You’ll often find the 386-384DRB Bearing in agricultural machinery, such as tractors and harvesters, where its tapered roller design provides reliable performance under varying loads. The inch sizing makes it a good fit for North American equipment standards.

Built for Heavy-Duty Use: 386-384DRB Bearing
In industrial gearboxes, the 386-384DRB Bearing offers smooth operation thanks to its standard radial clearance and open design. The steel cage adds extra strength, making it suitable for high-load applications.

Automotive vs Aerospace: Applications of 386-384DRB Bearing
The 386-384DRB Bearing works well in truck wheel hubs, balancing radial and thrust loads effectively. While not typically used in aerospace, its precision makes it ideal for ground vehicles requiring robust performance.

Perfect Fit for Automation: 386-384DRB Bearing
For automated conveyor systems, the 386-384DRB Bearing provides consistent movement with minimal maintenance. Its ABEC-1 rating ensures reliable precision for industrial automation needs.

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