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

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

The 390A-394DC is a two-row tapered roller bearing with a 2.5″ bore and 4.3307″ outer diameter, built from sturdy chrome steel. It handles combined loads with a dynamic radial capacity of 38700 lbf and operates smoothly 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, making it suitable for heavy-duty applications.

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

Weighing 4 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 390A-394DC
  • Brand TFL
  • Size 2.5" x 4.3307" x 0.866"
  • Bore Dia 2.5"
  • 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 2.87"
  • 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 390A
  • 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 lb

Features

Performance Features of 390A-394DC Bearing

390A-394DC Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 38,700 lbf, ensuring reliable performance in heavy-duty applications.

The double-row tapered roller design distributes loads evenly, enhancing durability and stability.
With a standard radial clearance, it provides smooth operation across various conditions.

390A-394DC Bearing operates efficiently within a temperature range of -30° to 110°C.
Its steel cage maintains roller alignment, reducing friction and extending service life.

The open seal design allows for easy lubrication, ensuring consistent performance.
This bearing is ideal for applications requiring robust load handling and long-term reliability.

Application

Industrial Uses of 390A-394DC Bearing
390A-394DC 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 effectively. The chrome steel construction ensures durability in harsh working conditions.

Where Is 390A-394DC Bearing Used?
You’ll often find 390A-394DC Bearing in agricultural machinery, supporting components like gearboxes and wheel hubs. Its inch sizing makes it a reliable choice for North American equipment manufacturers.

Built for Heavy-Duty Use: 390A-394DC Bearing
390A-394DC Bearing excels in industrial fans and pumps, where its tapered roller design manages high-speed rotations smoothly. The open seal type allows for easy lubrication, extending its service life.

Automotive vs Aerospace: Applications of 390A-394DC Bearing
In automotive applications, 390A-394DC Bearing is ideal for truck axles and differentials, providing stability under heavy loads. For aerospace, it’s used in auxiliary systems where precision and reliability are key.

Key Fields for 390A-394DC Bearing
390A-394DC Bearing is a go-to for railway applications, particularly in bogie assemblies, thanks to its robust construction. The standard radial clearance ensures consistent performance across varying temperatures.

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