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388A-384ED TDO (Two-Row Double-Outer Race) (Imperial)

388A-384ED TDO (Two-Row Double-Outer Race) (Imperial)

The 388A-384ED is a double-row tapered roller bearing with a 2.265″ 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 open design allows for easy lubrication, while the steel cage ensures smooth operation. The bearing works in temperatures from -30°C to 110°C, making it versatile for various conditions.

This model is part of the 385 series and comes with standard radial clearance. It’s ideal for heavy-duty applications like industrial gearboxes or vehicle axles where both radial and thrust loads are present.

Weighing 3.07 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 388A-384ED
  • Brand TFL
  • Size 2.265" x 3.937" x 0.864"
  • Bore Dia 2.265"
  • 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 2.76"
  • 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 388A
  • 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 3.07 lb

Features

How Is 388A-384ED Bearing Engineered for Reliability?

388A-384ED Bearing features a double-row tapered roller design, providing robust support for combined 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 wear.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

388A-384ED Bearing’s standard radial clearance options offer flexibility for different applications.
Its open design simplifies lubrication, ensuring smooth operation over extended periods.

Application

Industrial Uses of 388A-384ED Bearing
The 388A-384ED 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 demanding environments.

In automotive applications, 388A-384ED Bearing supports wheel hubs and differential systems, providing reliable performance under varying loads. The inch sizing makes it compatible with many North American vehicle models.

For industrial automation, 388A-384ED Bearing is ideal for conveyor systems and robotic arms, where its tapered roller design offers smooth operation. The open seal type allows for easy lubrication and maintenance.

Where Is 388A-384ED Bearing Used?
You’ll often find 388A-384ED Bearing in agricultural machinery, like tractors and harvesters, where its robust design withstands harsh conditions. The standard radial clearance ensures consistent performance over time.

In material handling equipment, 388A-384ED Bearing excels in forklifts and cranes, thanks to its high dynamic radial load capacity. The steel cage adds extra strength for heavy-duty use.

Built for Heavy-Duty Use: 388A-384ED Bearing
The 388A-384ED Bearing is a go-to choice for railway applications, such as axle boxes, where its tapered rollers handle high speeds and loads. Its ABEC-1 rating balances precision and cost-effectiveness.

In power transmission systems, 388A-384ED Bearing supports gearboxes and driveshafts, ensuring smooth power delivery. The chrome steel rollers reduce wear, extending the bearing’s lifespan.

Automotive vs Aerospace: Applications of 388A-384ED Bearing
In automotive settings, 388A-384ED Bearing is used in drivetrains and steering systems, offering reliable performance. Its inch measurements align with many vehicle standards.

For aerospace ground equipment, 388A-384ED Bearing is found in landing gear test rigs and maintenance tools. The bearing’s temperature range suits various operational conditions.

Q&A

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