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

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

The 387W-384DRB is a double-row tapered roller bearing with a 2.25″ bore and 4.125″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 42200 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 can withstand temperatures from -30°C to 110°C, making it versatile for various environments.

With standard radial clearance and ABEC-1 rating, it offers reliable precision for industrial applications. Ideal for heavy machinery or equipment where combined radial and thrust loads are common.

Weighing 3.65 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for most industrial uses.

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Product Parameters

  • Part Number 387W-384DRB
  • Brand TFL
  • Size 2.25" x 4.125" x 0.864"
  • Bore Dia 2.25"
  • 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 2.6"
  • 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 387W
  • 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 3.65 lb

Features

How Is 387W-384DRB Bearing Engineered for Reliability?

387W-384DRB Bearing features a double-row tapered roller design, providing robust support for combined radial and thrust loads.
Its chrome steel construction ensures durability, with a dynamic radial load capacity of 42,200 lbf.

The precision-engineered cage maintains roller alignment, reducing friction and extending service life.
With a standard radial clearance, it offers reliable performance in various industrial applications.

387W-384DRB Bearing operates efficiently within a temperature range of -30° to 110°C.
Its open design simplifies lubrication, ensuring smooth operation under heavy loads.

Application

Industrial Uses of 387W-384DRB Bearing
The 387W-384DRB 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.

Where Is 387W-384DRB Bearing Used?
You’ll often find the 387W-384DRB Bearing in agricultural machinery, like tractors and harvesters, where its robust design supports high loads and rough terrain. The inch sizing makes it a fit for many North American equipment standards.

Built for Heavy-Duty Use: 387W-384DRB Bearing
In automotive applications, the 387W-384DRB Bearing works well in wheel hubs and differentials, thanks to its tapered roller design. It’s a reliable choice for vehicles that face constant stress and variable loads.

Automotive vs Aerospace: Applications of 387W-384DRB Bearing
While the 387W-384DRB Bearing excels in automotive systems, it’s also suitable for aerospace ground support equipment. Its precision and load capacity make it versatile for both industries.

Key Fields for 387W-384DRB Bearing
The 387W-384DRB Bearing is ideal for industrial fans and pumps, where its open design allows for easy lubrication. Its temperature range ensures performance in both hot and cold conditions.

Q&A

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