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

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

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

Its open design allows for easy lubrication, while the steel cage ensures reliable performance. The bearing operates smoothly in temperatures ranging from -30°C to 110°C, suitable for various industrial environments.

This model is interchangeable with Timken bearings, offering a practical replacement option. Ideal for use in gearboxes, axles, or machinery where combined loads are common.

Weighing 1.7 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

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Product Parameters

  • Part Number 399A-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 0.09"
  • Cup Backface ToClear Radius 0.03"
  • Cone Frontface Backing Diameter 3.54"
  • Cone Backface Backing Diameter 3.07"
  • 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 399A
  • 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

How Is 399A-394 Bearing Engineered for Reliability?

399A-394 Bearing is constructed with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 22,200 lbf, ensuring dependable performance in tough conditions.
The steel cage maintains roller alignment, reducing friction and enhancing durability.
With a temperature range of -30° to 110°C, it performs reliably in various environments.

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

399A-394 Bearing handles temperatures up to 110°C, making it ideal for demanding industrial settings.
The chrome steel construction ensures stability and strength even under thermal stress.
Its open design allows for easy lubrication, maintaining smooth operation in high-heat conditions.
The standard radial clearance options provide flexibility for different application needs.

Built for Durability: 399A-394 Bearing

399A-394 Bearing features a single-row tapered roller design, optimised for heavy combined loads.
The chrome steel rollers and rings enhance wear resistance, prolonging service life.
With a static radial load capacity of 28,100 lbf, it excels in high-stress environments.
Its ABEC-1 rating ensures consistent precision and reliability in various applications.

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

399A-394 Bearing uses chrome steel for both rollers and rings, balancing cost and performance.
This material choice provides excellent strength and durability for industrial applications.
The steel cage ensures proper roller alignment, reducing wear and maintenance needs.
Its dynamic thrust rating of 3,970 lbf makes it versatile for different load types.

Why Choose 399A-394 Bearing for Precision Tasks?

399A-394 Bearing offers standard radial clearance, suitable for precision applications.
The tapered roller design ensures accurate load distribution and smooth operation.
Its effective center location of -0.03″ enhances stability in precise machinery.
The ABEC-1 rating confirms its reliability for tasks requiring consistent performance.

Application

Industrial Uses of 399A-394 Bearing
The 399A-394 Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. Its chrome steel construction ensures durability even in demanding environments.

Where Is 399A-394 Bearing Used?
You’ll often find the 399A-394 Bearing in automotive applications, particularly in wheel hubs and differential systems. Its inch sizing makes it a good fit for American-made vehicles, offering reliable performance under stress.

Built for Heavy-Duty Use: 399A-394 Bearing
This bearing excels in industrial settings such as conveyor systems and mining equipment. The open design allows for easy lubrication, extending its lifespan in high-load scenarios.

Automotive vs Aerospace: Applications of 399A-394 Bearing
In automotive systems, the 399A-394 Bearing supports wheel assemblies, while in aerospace, it’s used in auxiliary gearboxes. Its ABEC-1 rating ensures consistent performance across different industries.

Essential Roles of 399A-394 Bearing
The 399A-394 Bearing is a go-to choice for machinery requiring precise radial and thrust load management. Its steel cage and chrome steel rollers provide a balance of strength and smooth operation.

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