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

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

The 387AS-384XD 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 works well in temperatures from -30°C to 110°C.

Its double-row design provides extra stability, while the open seal allows for easy lubrication. The steel cage ensures durability, making it suitable for heavy-duty use.

This bearing is ideal for industrial machinery or vehicle axles where high radial and thrust loads are common. It comes in standard radial clearance but is also available in C3, C4, or C5 options.

Weighing 5.52 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a reliable choice for replacements or new installations.

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Product Parameters

  • Part Number 387AS-384XD
  • 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 3.764"
  • 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 4.1389"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.03"
  • Cone Backface Backing Diameter 2.87"
  • 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 387AS
  • Cup Part Number 384XD
  • 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 5.52 lb

Features

Performance Features of 387AS-384XD Bearing

387AS-384XD Bearing is built with chrome steel rings and rollers, offering robust performance under combined loads.
Its dynamic radial load capacity reaches 42,200 lbf, making it suitable for heavy-duty applications.

The double-row tapered roller design ensures stability and efficient load distribution.
This construction enhances durability while maintaining smooth operation in various conditions.

387AS-384XD Bearing operates within a temperature range of -30° to 110°C, ensuring reliability in diverse environments.
The steel cage keeps rollers aligned, reducing wear and extending service life.

With standard radial clearance options, this bearing provides flexibility for different operational needs.
Its open design simplifies maintenance, though lubrication is required for optimal performance.

Application

Industrial Uses of 387AS-384XD Bearing
The 387AS-384XD Bearing is commonly used in heavy machinery, such as construction equipment and mining vehicles, where its double-row design handles combined radial and thrust loads efficiently. Its chrome steel construction ensures durability in tough working conditions.

Where Is 387AS-384XD Bearing Used?
You’ll often find the 387AS-384XD Bearing in agricultural machinery, like tractors and harvesters, where its robust design supports high loads. The open seal type allows for easy lubrication, extending its service life.

Built for Heavy-Duty Use: 387AS-384XD Bearing
The 387AS-384XD Bearing excels in industrial gearboxes, providing reliable performance under continuous operation. Its tapered roller design ensures smooth rotation even under significant stress.

Automotive vs Aerospace: Applications of 387AS-384XD Bearing
In automotive applications, the 387AS-384XD Bearing is ideal for wheel hubs and differentials, offering stability under varying loads. For aerospace, its precision makes it suitable for auxiliary systems requiring consistent performance.

Key Fields for 387AS-384XD Bearing
The 387AS-384XD Bearing is a go-to choice for railway applications, where its ability to handle dynamic loads ensures safe and efficient operation. Its standard radial clearance makes it versatile for various setups.

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