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399A-394DC TDO (Two-Row Double-Outer Race) (Imperial)

399A-394DC TDO (Two-Row Double-Outer Race) (Imperial)

The 399A-394DC is a double-row tapered roller bearing with a 2.6875″ 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 ranging from -30°C to 110°C.

This model is part of the 395 series, offering standard radial clearance with options for C3, C4, or C5. Ideal for heavy-duty applications like industrial gearboxes or vehicle axles.

Weighing 3.61 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, making it a reliable choice for various industries.

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Product Parameters

  • Part Number 399A-394DC
  • Brand TFL
  • Size 2.6875" x 4.3307" x 0.866"
  • Bore Dia 2.6875"
  • 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 3.07"
  • 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 399A
  • 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 3.61 lb

Features

Why Choose 399A-394DC Bearing for Combined Loads?

399A-394DC Bearing is built with chrome steel rings and rollers, offering robust performance under combined radial and thrust loads.
Its dynamic radial load capacity reaches 38,700 lbf, making it suitable for heavy-duty applications.
The double-row tapered roller design ensures stability and even load distribution.
With a temperature range of -30° to 110°C, it performs reliably in various environments.

Application

Industrial Uses of 399A-394DC Bearing
The 399A-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. Its chrome steel construction ensures durability in tough working conditions.

Where Is 399A-394DC Bearing Used?
You’ll often find the 399A-394DC Bearing in agricultural machinery, like tractors and harvesters, where its tapered roller design provides reliable performance under varying loads. The inch sizing makes it a good fit for North American equipment standards.

Built for Heavy-Duty Use: 399A-394DC Bearing
In industrial gearboxes, the 399A-394DC Bearing supports smooth operation thanks to its robust steel cage and high dynamic load capacity. Its open design allows for easy lubrication, extending service life in demanding applications.

Automotive vs Aerospace: Applications of 399A-394DC Bearing
In automotive applications, the 399A-394DC Bearing is ideal for wheel hubs and differentials, offering stability under heavy loads. For aerospace, its precision and reliability make it suitable for auxiliary systems requiring consistent performance.

Perfect Fit for Automation: 399A-394DC Bearing
The 399A-394DC Bearing works well in automated conveyor systems, where its double-row construction ensures smooth movement of heavy loads. Its standard radial clearance options provide flexibility for different operational needs.

Q&A

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