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

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

The 387AS-384ED is a double-row tapered roller bearing with a 2.25″ 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 temperatures from -30°C to 110°C.
The open design allows easy lubrication, while the steel cage ensures durability under heavy radial and thrust loads.
Ideal for industrial machinery or vehicle applications where robust performance is needed.

This bearing features standard radial clearance and meets ABEC-1 precision standards for reliable use.
Its double-row construction provides extra stability, making it suitable for high-load scenarios.
Weighing 3.08 lb, it offers a solid balance of strength and manageable size.
Compliant with RoHS and REACH regulations for safe operation in various environments.

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

Product Parameters

  • Part Number 387AS-384ED
  • 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 1.562"
  • 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 2.87"
  • 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 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 3.08 lb

Features

How Is 387AS-384ED Bearing Engineered for Reliability?

387AS-384ED 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 steel cage maintains roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

Built for Durability: 387AS-384ED Bearing

387AS-384ED Bearing is crafted with precision to handle heavy loads, thanks to its tapered roller design.
The chrome steel rings and rollers enhance wear resistance, ensuring long-term performance.
Its standard radial clearance options (C3/C4/C5) allow for flexibility in different applications.
The open seal type simplifies maintenance while keeping lubrication requirements straightforward.

What Makes 387AS-384ED Bearing Suitable for High-Temperature Applications?

387AS-384ED Bearing operates efficiently in temperatures ranging from -30° to 110°C.
Its chrome steel components resist thermal deformation, maintaining stability under stress.
The double-row design distributes loads evenly, reducing heat buildup during operation.
With a dynamic radial rating of 10,900 lbf for two rows, it ensures reliable performance in demanding environments.

Application

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

In automotive applications, 387AS-384ED Bearing supports wheel hubs and differential systems, providing reliable performance under varying loads. Its inch sizing makes it a good fit for American and British vehicle models.

For industrial automation, 387AS-384ED Bearing’s open design allows for easy lubrication, maintaining smooth operation in conveyor systems and robotic arms. The standard radial clearance offers flexibility for different operational needs.

Where Is 387AS-384ED Bearing Used?
387AS-384ED Bearing finds its place in agricultural machinery, particularly in tractors and harvesters, where its tapered roller design manages heavy loads effortlessly. The steel cage adds to its longevity in dusty conditions.

In material handling systems, 387AS-384ED Bearing ensures smooth rotation in pulley assemblies and gearboxes. Its ABEC-1 rating provides sufficient precision for general industrial applications.

Built for Heavy-Duty Use: 387AS-384ED Bearing
387AS-384ED Bearing excels in forestry equipment, such as log splitters and sawmills, thanks to its robust construction. The dynamic radial load capacity of 42200 lbf makes it suitable for high-stress scenarios.

For railway applications, 387AS-384ED Bearing supports axle boxes, where its temperature range of -30° to 110 °C ensures reliability in varying climates. The standard lubrication requirement simplifies maintenance.

Automotive vs Aerospace: Applications of 387AS-384ED Bearing
In automotive systems, 387AS-384ED Bearing is ideal for heavy-duty trucks and buses, handling combined loads with ease. The inch measurements align well with North American manufacturing standards.

For aerospace ground equipment, 387AS-384ED Bearing is used in cargo loaders and tow tractors, where its durability and ease of maintenance are valued. The open seal type allows for quick inspections and servicing.

Q&A

SEND INQUIRY