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TS (Single Row Tapered Roller Bearings) (Imperial) 399AS-394AS

TS (Single Row Tapered Roller Bearings) (Imperial) 399AS-394AS

The 399AS-394AS is a single-row tapered roller bearing with a 2.6875″ bore and 4.3307″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 22200 lbf radially and 3970 lbf thrust, making it versatile for various applications.

Its open design allows for easy lubrication, while the steel cage ensures durability under heavy use. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for industrial machinery or automotive systems where combined loads are common.

Weighing 1.6 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and eco-friendly use.

The standard radial clearance ensures consistent performance, while the ABEC-1 rating provides reliable precision. Suitable for applications requiring long-lasting performance under demanding conditions.

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Product Parameters

  • Part Number 399AS-394AS
  • Brand TFL
  • Interchangeable Timken
  • Size 2.6875" x 4.3307" x 0.8661"
  • Bore Dia 2.6875"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.3307"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 0.866"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.7411"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 0.8661"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.2"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 3.54"
  • Cone Backface Backing Diameter 3.27"
  • Cup Frontface Backing Diameter 4.12"
  • Cup Backface Backing Diameter 3.90"
  • Cage Cone Frontface Clearance 0.11"
  • Cage Cone Backface Clearance 0.05"
  • Effective Center Location -0.03"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 399AS
  • Cup Part Number 394AS
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 395
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 22200 lbf
  • Static Radial Load 28100 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 5760 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 3970 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 1.6 lb

Features

Performance Features of 399AS-394AS Bearing

399AS-394AS Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 22,200 lbf, ensuring reliable performance in various applications.
The steel cage maintains roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs well in diverse environments.

Why Choose 399AS-394AS Bearing for Precision Tasks?

399AS-394AS Bearing features a single-row tapered roller design, ideal for handling combined loads with precision.
The chrome steel construction provides durability and resistance to wear under heavy radial and thrust loads.
Its standard radial clearance ensures smooth operation, suitable for ABEC-1 rated applications.
The effective center location of -0.03″ enhances stability in mounted assemblies.

Engineered for Reliability: 399AS-394AS Bearing

399AS-394AS Bearing’s tapered roller design ensures efficient load distribution, reducing stress on components.
The chrome steel rollers and rings enhance durability, even under high dynamic thrust loads of 3,970 lbf.
Its open design allows for easy lubrication, maintaining performance over extended periods.
With a static radial load capacity of 28,100 lbf, it is reliable for heavy-duty applications.

Steel vs Ceramic Bearings: Strengths of 399AS-394AS Bearing

399AS-394AS Bearing uses chrome steel for both rollers and rings, providing excellent strength and wear resistance.
This material choice ensures it can handle dynamic radial loads up to 22,200 lbf without compromising performance.
The steel cage further enhances durability, making it suitable for demanding industrial environments.
Its standard radial clearance and ABEC-1 rating make it a practical choice for many applications.

Application

Industrial Uses of 399AS-394AS Bearing
The 399AS-394AS Bearing is commonly used in heavy machinery, such as construction equipment and mining tools, where its tapered roller design handles combined loads effectively. Its chrome steel construction ensures durability in tough working conditions.
In automotive applications, 399AS-394AS Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. The imperial sizing makes it a preferred choice for North American vehicle models.

Where Is 399AS-394AS Bearing Used?
You’ll often find 399AS-394AS Bearing in agricultural machinery, supporting components like tractor axles and harvesters. Its open design allows for easy lubrication, extending service life in dusty environments.
The bearing also works well in industrial gearboxes, where its standard radial clearance ensures smooth operation under heavy radial and thrust loads.

Built for Heavy-Duty Use: 399AS-394AS Bearing
399AS-394AS Bearing excels in applications like conveyor systems, where its steel cage and chrome steel rollers withstand continuous use. The ABEC-1 rating ensures consistent performance without over-engineering.
For general machinery maintenance, this bearing’s compatibility with Timken models makes it a versatile replacement option. Its temperature range suits most industrial environments.

Automotive vs Aerospace: Applications of 399AS-394AS Bearing
In automotive settings, 399AS-394AS Bearing is ideal for drivetrain components, balancing radial and thrust loads efficiently. The inch measurements align with many US-made parts.
While not typically used in aerospace, this bearing serves well in ground support equipment, where reliability and ease of maintenance are key. Its weight-to-load ratio is practical for mobile applications.

Key Fields for 399AS-394AS Bearing
399AS-394AS Bearing is a go-to choice for rail and transport equipment, handling the dynamic loads of freight car axles. The standard radial clearance adapts well to varying operational conditions.
In manufacturing plants, it supports machinery like presses and rollers, where its combined load capacity reduces the need for multiple bearing types. The steel cage adds stability during high-use periods.

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