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

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

The 399AS-394DC is a two-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 double-row construction provides extra stability, while the open design allows for easy lubrication. The bearing operates smoothly in temperatures from -30°C to 110°C.

This model features standard radial clearance and is ABEC-1 rated, making it a practical choice for industrial use. Ideal for heavy-duty applications like gearboxes or conveyor systems where combined loads are common.

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

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Product Parameters

  • Part Number 399AS-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 3.27"
  • 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 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 3.53 lb

Features

How Is 399AS-394DC Bearing Engineered for Reliability?

399AS-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 service life.
Designed for standard radial clearance, it operates efficiently within a temperature range of -30° to 110°C.

What Makes 399AS-394DC Bearing Suitable for High-Temperature Applications?

399AS-394DC Bearing is built with chrome steel rings and rollers, capable of withstanding temperatures up to 110°C.
Its open design allows for effective lubrication, ensuring smooth operation in demanding conditions.
The double-row construction distributes loads evenly, enhancing performance under stress.
With a dynamic radial rating of 10,000 lbf for two rows, it offers reliable performance in high-temperature environments.

Built for Durability: 399AS-394DC Bearing

399AS-394DC Bearing’s tapered roller design ensures long-lasting performance, even under heavy combined loads.
The chrome steel materials resist wear, while the steel cage keeps rollers properly aligned.
Its standard radial clearance and ABEC-1 rating provide consistent precision.
Weighing 3.53 lb, it balances strength and efficiency for industrial applications.

Application

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

What Makes 399AS-394DC Bearing a Preferred Choice?
In automotive applications, 399AS-394DC Bearing supports wheel hubs and differential systems, providing reliable performance under radial and thrust loads. The standard radial clearance makes it adaptable to various vehicle designs.

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

Light-Duty vs Heavy-Duty: Best Uses for 399AS-394DC Bearing
In light-duty applications like agricultural machinery, 399AS-394DC Bearing offers smooth operation with minimal maintenance. For heavy-duty uses, its dynamic radial rating ensures longevity even under extreme loads.

Where Is 399AS-394DC Bearing Used?
You’ll find 399AS-394DC Bearing in wind turbines and gearboxes, where its tapered roller design manages high radial and axial forces. The inch sizing makes it compatible with many North American industrial standards.

Q&A

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