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

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

The 386-384D is a two-row tapered roller bearing with a 2.184″ bore and 3.937″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 35600 lbf and is designed for long-lasting performance in demanding conditions.

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

This double-row construction provides extra stability, ideal for heavy-duty applications like industrial gearboxes or vehicle axles. The standard radial clearance ensures reliable performance under different load conditions.

Weighing 3.41 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for many engineering projects. Its ABEC-1 rating ensures consistent quality for general industrial use.

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Product Parameters

  • Part Number 386-384D
  • Brand TFL
  • Size 2.184" x 3.937" x 0.864"
  • Bore Dia 2.184"
  • 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 2.56"
  • Cup Frontface Backing Diameter 3.68"
  • Cage Cone Backface Clearance 0.03"
  • Dynamic Radial Load 35600 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 386
  • Cup Part Number 384D
  • 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 3.41 lb

Features

Performance Features of 386-384D Bearing

386-384D Bearing is built 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 heavy-duty applications.

The double-row tapered roller design enhances stability and load distribution.
This construction allows 386-384D Bearing to handle both radial and thrust loads efficiently.

386-384D Bearing operates smoothly within a temperature range of -30° to 110°C.
Its standard radial clearance options provide flexibility for various operational needs.

With a weight of 3.41 lb, 386-384D Bearing balances durability and ease of handling.
The steel cage ensures proper roller alignment, reducing wear and extending service life.

Application

Industrial Uses of 386-384D Bearing
386-384D Bearing is commonly used in heavy machinery, such as construction equipment and agricultural vehicles, where its double-row design handles combined radial and thrust loads effectively. The chrome steel construction ensures durability even in demanding environments.

In automotive applications, 386-384D Bearing supports axle systems and wheel hubs, providing reliable performance under varying load conditions. Its inch sizing makes it compatible with many North American vehicle models.

For industrial automation, 386-384D Bearing is a solid choice for conveyor systems and robotic arms, thanks to its open design and easy lubrication. The standard radial clearance allows for smooth operation in high-speed scenarios.

Where Is 386-384D Bearing Used?
You’ll often find 386-384D Bearing in mining equipment, where its tapered roller design handles heavy loads and harsh conditions. The steel cage adds extra strength, making it suitable for prolonged use.

In manufacturing plants, 386-384D Bearing is ideal for gearboxes and power transmission systems. Its ABEC-1 rating ensures consistent performance without unnecessary precision costs.

Built for Heavy-Duty Use: 386-384D Bearing
386-384D Bearing excels in forestry machinery, where its combined load capacity and robust construction withstand rough terrain. The open seal type simplifies maintenance in dusty environments.

For railway applications, 386-384D Bearing provides reliable support in bogies and traction systems. Its temperature range of -30° to 110°C ensures performance in diverse climates.

Automotive vs Aerospace: Applications of 386-384D Bearing
In automotive systems, 386-384D Bearing is trusted for drivetrain components, balancing durability and cost-effectiveness. The inch measurements align well with standard automotive designs.

For aerospace ground equipment, 386-384D Bearing offers dependable performance in tow tractors and loading systems. Its weight of 3.41 lb strikes a balance between strength and portability.

Q&A

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