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

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

The 387AS-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 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 even under heavy use.

This bearing is ideal for industrial machinery or vehicle axles where both radial and thrust loads are present. It comes in standard radial clearance but can also be ordered in C3, C4, or C5 options.

Weighing 3.28 lb, it’s a robust choice for demanding applications. Compliant with RoHS and REACH standards, it meets ABEC-1 precision requirements.

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Product Parameters

  • Part Number 387AS-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 2.87"
  • 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 387AS
  • 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 3.28 lb

Features

How Does 387AS-384D Bearing Handle Combined Loads?

387AS-384D Bearing features a double-row tapered roller design, providing excellent resistance to both radial and thrust loads.
Its dynamic radial load capacity reaches 42,200 lbf, ensuring reliable performance in heavy-duty applications.
The chrome steel construction enhances durability, while the steel cage maintains roller alignment.
With a temperature range of -30° to 110°C, it performs well in various operating conditions.

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

387AS-384D Bearing is built with chrome steel rollers and rings, offering high strength and wear resistance.
The double-row design distributes loads evenly, extending the bearing’s service life.
Its standard radial clearance ensures smooth operation, even under combined loads.
The open seal type allows for easy lubrication, maintaining optimal performance.

Engineered for Precision: 387AS-384D Bearing

387AS-384D Bearing’s tapered roller design ensures precise load distribution, reducing friction and wear.
The ABEC-1 rating guarantees consistent performance in industrial applications.
With a dynamic thrust rating of 3,810 lbf, it handles demanding conditions with ease.
The steel cage provides stability, keeping rollers in place during operation.

Structural Advantages of 387AS-384D Bearing

387AS-384D Bearing’s double-row construction enhances load capacity and stability.
The chrome steel materials resist wear, ensuring long-lasting performance.
Its standard radial clearance allows for smooth rotation under various loads.
The bearing’s design simplifies installation and maintenance, reducing downtime.

Application

Industrial Uses of 387AS-384D Bearing
387AS-384D Bearing is commonly used in heavy machinery like construction equipment, where its double-row design handles combined radial and thrust loads efficiently. The chrome steel construction ensures durability in demanding environments.

In automotive applications, 387AS-384D Bearing supports wheel hubs and axles, providing reliable performance under varying loads. Its inch sizing makes it a preferred choice for American and British vehicle models.

For industrial conveyor systems, 387AS-384D Bearing’s tapered roller design offers smooth operation and easy maintenance. The open seal type allows for straightforward lubrication, extending service life.

Where Is 387AS-384D Bearing Used?
You’ll often find 387AS-384D Bearing in agricultural machinery, where its robust design withstands harsh conditions. The standard radial clearance ensures consistent performance even with temperature fluctuations.

Built for Heavy-Duty Use: 387AS-384D Bearing
387AS-384D Bearing excels in mining equipment, thanks to its high dynamic radial load capacity. The steel cage adds extra strength, making it suitable for continuous operation.

Automotive vs Aerospace: Applications of 387AS-384D Bearing
In automotive settings, 387AS-384D Bearing handles wheel loads, while in aerospace, it’s used in landing gear systems. Its ABEC-1 rating ensures reliable precision for both industries.

Q&A

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