+86 15806631151 [email protected]
TFL BEARINGS
REQUEST A QUOTE
387-384D TDO (Two-Row Double-Outer Race) (Imperial)

387-384D TDO (Two-Row Double-Outer Race) (Imperial)

The 387-384D is a two-row tapered roller bearing with a 2.25″ bore and 3.937″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 42200 lbf and is designed for long-lasting performance.

Its double-row construction provides extra stability, while the open design allows for easy lubrication. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is part of the 385 series and comes with standard radial clearance. It’s ideal for heavy-duty applications like truck axles or industrial gearboxes.

Weighing 3.31 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a reliable choice for various mechanical setups.

Get A Free Quote
    Description Features Application Q&A Featured Products Our Process

Product Parameters

  • Part Number 387-384D
  • Brand TFL
  • Size 2.25" x 3.937" x 0.864"
  • Bore Dia 2.25"
  • 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 2.64"
  • 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 387
  • 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) 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 3.31 lb

Features

How Is 387-384D Bearing Engineered for Reliability?

387-384D 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 open seal type allows for easy lubrication, maintaining smooth operation in various conditions.
With a temperature range of -30° to 110°C, it performs reliably in diverse environments.

Built for Durability: 387-384D Bearing

387-384D Bearing is constructed with chrome steel rollers and rings, enhancing its wear resistance.
The double-row design distributes loads evenly, extending the bearing’s service life.
Its standard radial clearance options (including C3/C4/C5) allow for flexibility in different applications.
Weighing just 3.31 lb, it offers a balance of strength and manageable size.

What Makes 387-384D Bearing Suitable for Heavy-Duty Applications?

387-384D Bearing handles dynamic radial loads up to 42,200 lbf, making it ideal for heavy machinery.
The tapered roller design ensures efficient load distribution, reducing stress on individual components.
Its steel cage maintains roller alignment, preventing premature wear.
Operating between -30° and 110°C, it adapts to both cold and moderately hot environments.

Application

Industrial Uses of 387-384D Bearing
The 387-384D Bearing is commonly used in heavy machinery, such as construction equipment and mining rigs, where its double-row design handles combined radial and thrust loads effectively.
Its chrome steel construction ensures durability in demanding environments, making it a reliable choice for long-term use.

Where Is 387-384D Bearing Used?
You’ll often find the 387-384D Bearing in automotive applications, particularly in wheel hubs and differential systems, where its tapered roller design provides smooth performance.
The inch sizing makes it a good fit for North American machinery, offering easy compatibility with existing systems.

Built for Heavy-Duty Use: 387-384D Bearing
In industrial gearboxes, the 387-384D Bearing excels due to its high dynamic radial load capacity, ensuring stable operation under heavy stress.
The open seal type allows for straightforward lubrication, which is essential for maintaining performance in continuous-use scenarios.

Automotive vs Aerospace: Applications of 387-384D Bearing
While the 387-384D Bearing is popular in automotive systems like truck axles, it also finds use in aerospace ground support equipment.
Its standard radial clearance and ABEC-1 rating make it versatile enough for both precision and general-purpose applications.

Key Fields for 387-384D Bearing
The 387-384D Bearing is ideal for agricultural machinery, such as tractors and harvesters, where its robust design withstands rough conditions.
The steel cage adds extra strength, ensuring the bearing can handle the vibrations and shocks common in farming equipment.

Q&A

SEND INQUIRY