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389-384ED TDO (Two-Row Double-Outer Race) (Imperial)

389-384ED TDO (Two-Row Double-Outer Race) (Imperial)

The 389-384ED is a two-row tapered roller bearing with a 2.188″ bore and 3.937″ outer diameter, built from sturdy chrome steel for long-lasting performance.
It handles combined loads up to 42200 lbf and is designed for smooth operation in demanding conditions. The open seal type allows for easy lubrication and maintenance.

This double-row design offers excellent radial and thrust capacity, with dynamic ratings of 10900 lbf (radial) and 3810 lbf (thrust) for two-row operation. The steel cage ensures durability under heavy use.

Ideal for industrial gearboxes or heavy machinery where combined loads are common. Works in temperatures from -30°C to 110°C and meets RoHS/REACH standards. Weighs 3.21 lb for its robust size.

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Product Parameters

  • Part Number 389-384ED
  • Brand TFL
  • Size 2.188" x 3.937" x 0.864"
  • Bore Dia 2.188"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.937"
  • 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 3.68"
  • Cage Cone Backface Clearance 0.03"
  • Dynamic Radial Load 42200 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 389
  • Cup Part Number 384ED
  • 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 3.21 lb

Features

Performance Features of 389-384ED Bearing

389-384ED Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 42,200 lbf, ensuring reliable performance in heavy-duty applications.

The double-row tapered roller design distributes loads evenly, enhancing durability and reducing wear.
With a standard radial clearance, it provides smooth operation across various conditions.

389-384ED Bearing operates efficiently within a temperature range of -30° to 110°C.
Its steel cage maintains roller alignment, contributing to extended service life.

The open seal design allows for easy lubrication, ensuring consistent performance.
This bearing is ideal for applications requiring robust load handling and reliability.

Application

Industrial Uses of 389-384ED Bearing
The 389-384ED Bearing is commonly used in heavy machinery like construction equipment and mining tools, where its double-row design handles combined radial and thrust loads efficiently. Its chrome steel construction ensures durability in demanding environments.

In automotive applications, 389-384ED Bearing supports wheel hubs and drivetrains, providing reliable performance under varying load conditions. The inch sizing makes it a preferred choice for American and British vehicle manufacturers.

For industrial automation, 389-384ED Bearing’s tapered roller design offers smooth operation in conveyor systems and robotic arms. The open seal type allows for easy lubrication, extending its service life in high-use scenarios.

Where Is 389-384ED Bearing Used?
You’ll often find 389-384ED Bearing in agricultural machinery, where its robust design withstands dirt and debris. The standard radial clearance ensures consistent performance even in rough conditions.

In material handling systems, 389-384ED Bearing’s high dynamic radial load capacity makes it ideal for forklifts and cranes. The steel cage adds extra strength, reducing wear over time.

Built for Heavy-Duty Use: 389-384ED Bearing
The 389-384ED Bearing excels in forestry equipment, handling heavy loads with ease. Its tapered rollers distribute stress evenly, preventing premature failure.

For railway applications, 389-384ED Bearing’s temperature range (-30° to 110°C) ensures reliability in extreme weather. The ABEC-1 rating guarantees consistent precision for smooth rides.

Automotive vs Aerospace: Applications of 389-384ED Bearing
In automotive settings, 389-384ED Bearing is trusted for differential systems due to its load-sharing capability. The inch measurements simplify replacements in older models.

For aerospace ground equipment, 389-384ED Bearing’s chrome steel rollers provide durability without excessive weight. Its open design allows for quick inspections and maintenance.

Q&A

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