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390-394DC TDO (Two-Row Double-Outer Race) (Imperial)

390-394DC TDO (Two-Row Double-Outer Race) (Imperial)

The 390-394DC is a double-row tapered roller bearing with a 2.25″ bore and 4.3307″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 38700 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 well in temperatures from -30°C to 110°C, making it versatile for various conditions.

This model is part of the 395 series, with standard radial clearance and ABEC-1 precision. Ideal for heavy-duty applications like industrial gearboxes or vehicle axles where combined loads are common.

Weighing 4.45 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe use in most environments.

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Product Parameters

  • Part Number 390-394DC
  • Brand TFL
  • Size 2.25" x 4.3307" x 0.866"
  • Bore Dia 2.25"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.3307"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 1.8125"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 0.866"
  • 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 2.76"
  • Cup Frontface Backing Diameter 4.12"
  • Cage Cone Backface Clearance 0.05"
  • Dynamic Radial Load 38700 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 390
  • Cup Part Number 394DC
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 395
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 5760 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 3970 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 10000 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 4.450 lb

Features

How Is 390-394DC Bearing Engineered for Reliability?

390-394DC 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 38,700 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.

390-394DC Bearing’s standard radial clearance offers flexibility for different applications.
Its precise tolerances ensure smooth operation and easy integration into existing systems.

Application

Industrial Uses of 390-394DC Bearing
390-394DC 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.

What Makes 390-394DC Bearing a Preferred Choice?
In automotive applications, 390-394DC Bearing supports wheel hubs and differential systems, providing reliable performance under varying loads. Its inch sizing makes it compatible with many North American vehicle models.

Built for Heavy-Duty Use: 390-394DC Bearing
For industrial automation, 390-394DC 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.

Automotive vs Aerospace: Applications of 390-394DC Bearing
In automotive systems, 390-394DC Bearing excels in transmissions and axles, while in aerospace, it’s used in landing gear mechanisms. Its high dynamic load rating ensures performance in both fields.

Essential Roles of 390-394DC Bearing
390-394DC Bearing is found in agricultural machinery, such as tractors and harvesters, where its robust design withstands harsh conditions. The steel cage adds extra strength for long-term use.

Q&A

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