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

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

The 399AS-394 is a single-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 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 1.7 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number 399AS-394
  • 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 0.8661"
  • 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 0.03"
  • Cone Frontface Backing Diameter 3.54"
  • Cone Backface Backing Diameter 3.27"
  • Cup Frontface Backing Diameter 4.21"
  • Cup Backface Backing Diameter 3.98"
  • 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 394
  • 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 1.7 lb

Features

Performance Features of 399AS-394 Bearing

399AS-394 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 demanding conditions.
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 various environments.

How Is 399AS-394 Bearing Engineered for Reliability?

399AS-394 Bearing features a single-row tapered roller design, optimised for combined load applications.
The chrome steel construction provides durability, while the standard radial clearance ensures smooth operation.
Its dynamic thrust rating of 3,970 lbf (Ca90) makes it suitable for high-load scenarios.
The open seal type allows for easy lubrication, maintaining performance over time.

Built for Durability: 399AS-394 Bearing

399AS-394 Bearing’s chrome steel components resist wear, even under heavy radial and thrust loads.
The precise cone and cup width tolerances ensure proper fit and alignment during installation.
With a static radial load capacity of 28,100 lbf, it handles demanding industrial applications.
Its ABEC-1 rating confirms consistent quality and performance standards.

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

399AS-394 Bearing uses chrome steel for both rollers and rings, balancing cost and performance.
This material choice provides excellent strength-to-weight ratio at 1.7 lb per unit.
The bearing’s C90 dynamic radial rating of 5,760 lbf ensures long service life.
Standard lubrication requirements make maintenance straightforward for most applications.

Application

Industrial Uses of 399AS-394 Bearing
The 399AS-394 Bearing is commonly used in heavy machinery, such as construction equipment and mining tools, where its tapered roller design handles combined loads efficiently. Its chrome steel construction ensures durability even in demanding environments.

In automotive applications, 399AS-394 Bearing fits well in wheel hubs and differential systems, providing reliable performance under both radial and thrust loads. The inch sizing makes it compatible with many North American vehicle models.

For industrial conveyor systems, 399AS-394 Bearing’s open design allows for easy lubrication, extending service life in high-load scenarios. The steel cage adds extra strength, making it suitable for continuous operation.

Where Is 399AS-394 Bearing Used?
You’ll often find 399AS-394 Bearing in agricultural machinery, like tractors and harvesters, where its robust design handles rough conditions. The tapered rollers distribute loads evenly, reducing wear over time.

In manufacturing plants, 399AS-394 Bearing supports heavy-duty gearboxes and pulleys, ensuring smooth operation. Its standard radial clearance makes it versatile for various industrial setups.

Built for Heavy-Duty Use: 399AS-394 Bearing
The 399AS-394 Bearing excels in applications like railway axles, where its combined load capacity and durability are crucial. The chrome steel rollers resist wear, even under constant stress.

For forestry equipment, 399AS-394 Bearing’s ability to handle misalignment and heavy loads makes it a reliable choice. Its steel cage ensures stability in rugged operating conditions.

Automotive vs Aerospace: Applications of 399AS-394 Bearing
In automotive systems, 399AS-394 Bearing is ideal for wheel bearings and transmissions, offering balanced performance. Its inch measurements align with many standard vehicle designs.

For aerospace ground support equipment, 399AS-394 Bearing provides dependable load handling, though it’s not typically used in-flight. Its temperature range suits most ground-based applications.

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