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399AS-394D TDO (Two-Row Double-Outer Race) (Imperial)

399AS-394D TDO (Two-Row Double-Outer Race) (Imperial)

The 399AS-394D 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 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 395 series, with standard radial clearance and ABEC-1 precision. Ideal for heavy-duty applications like truck axles or industrial gearboxes where combined loads are common.

Weighing 3.53 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number 399AS-394D
  • 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 3.27"
  • 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 399AS
  • Cup Part Number 394D
  • 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 3.53 lb

Features

Performance Features of 399AS-394D Bearing

399AS-394D Bearing is built with chrome steel rings and rollers, offering robust performance under combined 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 efficient load distribution.
With a standard radial clearance, it provides reliable operation in various conditions.

399AS-394D Bearing operates within a temperature range of -30° to 110°C, ensuring versatility.
The steel cage maintains roller alignment, reducing friction and extending service life.

This bearing requires lubrication but offers durability and consistent performance.
Its imperial measurements make it compatible with a wide range of machinery.

Application

Industrial Uses of 399AS-394D Bearing
The 399AS-394D Bearing is commonly used in heavy machinery, such as construction equipment and mining rigs, where its double-row design handles combined radial and thrust loads effectively. Its chrome steel construction ensures durability in tough working conditions.

What Makes 399AS-394D Bearing a Preferred Choice?
In automotive applications, 399AS-394D Bearing supports wheel hubs and differential systems, providing reliable performance under varying loads. The imperial sizing makes it a practical fit for North American vehicle designs.

Built for Heavy-Duty Use: 399AS-394D Bearing
For industrial automation, 399AS-394D Bearing is ideal for conveyor systems and robotic arms, where its open design allows for easy lubrication and maintenance. The steel cage adds stability during high-speed operations.

Light-Duty vs Heavy-Duty: Best Uses for 399AS-394D Bearing
In lighter applications like agricultural machinery, 399AS-394D Bearing offers consistent performance with minimal maintenance. For heavier tasks, its dynamic load rating ensures longevity even under extreme stress.

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