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

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

The 387-S-384ED is a double-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 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 works well in temperatures ranging from -30°C to 110°C, making it versatile for various environments.

This model is part of the 385 series and comes with standard radial clearance, though options like C3/C4/C5 are available. Ideal for heavy-duty applications such as industrial gearboxes or machinery where both radial and thrust loads are present.

Weighing 3.12 lb, it’s a robust choice for imperial-sized systems. Compliant with RoHS and REACH standards, it’s a reliable and safe option for replacement or new installations.

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Product Parameters

  • Part Number 387-S-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 2.52"
  • 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 387-S
  • 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 3.12 lb

Features

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

387-S-384ED 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 proper roller alignment, reducing friction and wear.
With a standard radial clearance, it offers reliable performance in various industrial applications.

387-S-384ED Bearing operates efficiently within a temperature range of -30° to 110°C.
Its open design allows for easy lubrication, ensuring smooth operation over extended periods.

Application

Industrial Uses of 387-S-384ED Bearing
The 387-S-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, 387-S-384ED Bearing supports wheel hubs and drivetrain components, providing reliable performance under high stress. The inch sizing makes it compatible with many North American vehicle models.

For industrial automation, 387-S-384ED Bearing’s tapered roller design offers smooth operation in conveyor systems and robotic arms. The open seal type allows for easy lubrication, extending its service life.

What Makes 387-S-384ED Bearing a Preferred Choice?
The 387-S-384ED Bearing is ideal for applications requiring robust load capacity, such as agricultural machinery and forestry equipment. Its standard radial clearance ensures consistent performance across various temperatures.

In power transmission systems, 387-S-384ED Bearing’s steel cage enhances stability, reducing wear over time. The ABEC-1 rating provides a good balance of precision and affordability for general industrial use.

Built for Heavy-Duty Use: 387-S-384ED Bearing
The 387-S-384ED Bearing excels in environments like steel mills and paper plants, where its double-row tapered rollers handle extreme loads. Its chrome steel rollers resist deformation under pressure.

For railway applications, 387-S-384ED Bearing’s durability ensures reliable performance in freight car axles. The inch measurements simplify replacements in older rolling stock.

Light-Duty vs Heavy-Duty: Best Uses for 387-S-384ED Bearing
In light-duty scenarios, 387-S-384ED Bearing works well in small industrial pumps and compressors, offering smooth rotation. Its standard lubrication requirements make maintenance straightforward.

For heavy-duty tasks, 387-S-384ED Bearing’s dynamic radial load capacity of 42,200 lbf makes it suitable for wind turbine gearboxes. The temperature range of -30° to 110°C ensures versatility in various climates.

Q&A

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