TS (Single Row Tapered Roller Bearings) (Imperial) 399A-393A

The 399A-393A is a single-row tapered roller bearing with a 2.6875″ bore and 4.4375″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 22200 lbf radially and 3970 lbf in 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.

The standard radial clearance ensures easy installation, with options for C3, C4, or C5 available. Its tapered roller design provides stable performance under varying load conditions.

Suitable for applications requiring precise alignment and long service life. The ABEC-1 rating ensures consistent performance for general industrial use.

Maintenance is straightforward, with regular lubrication needed to keep it running smoothly. A practical choice for engineers and maintenance teams alike.

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Description

Features

Application

Q&A

Product Parameters

Part Number 399A-393A
Brand TFL
Interchangeable Timken
Size 2.6875" x 4.4375" x 0.8751"
Bore Dia 2.6875"
Bore Dia Tolerance +0.005" to 0
Outer Dia 4.4375"
Outer Dia Tolerance +0.001" to 0
Cone Width 0.866"
Cone Width Tolerance +0.003" to -0.01
Cup Width 0.625"
Cup Width Tolerance +0.002" to -0.01
Width 0.8751"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.09"
Cup Backface ToClear Radius 0.130"
Cone Frontface Backing Diameter 3.54"
Cone Backface Backing Diameter 3.07"
Cup Frontface Backing Diameter 4.15"
Cup Backface Backing Diameter 3.94"
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 393A
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 399A-393A Bearing

399A-393A 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 399A-393A Bearing Engineered for Reliability?

399A-393A Bearing features a single-row tapered roller design, optimised for combined load applications.
The chrome steel construction enhances durability, while the standard radial clearance allows for smooth operation.
Its dynamic thrust rating of 3,970 lbf ensures consistent performance under heavy loads.
This bearing is interchangeable with Timken models, providing flexibility in replacements.

Built for Durability: 399A-393A Bearing

399A-393A Bearing’s robust chrome steel components withstand high static radial loads up to 28,100 lbf.
The tapered roller design efficiently distributes stress, minimising wear over time.
With an ABEC-1 rating, it maintains precision in various industrial applications.
Its open seal type simplifies lubrication, ensuring proper maintenance for extended use.

Application

Industrial Uses of 399A-393A Bearing
The 399A-393A Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads efficiently. Its chrome steel construction ensures durability even in tough working conditions.

In automotive applications, 399A-393A Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. The imperial sizing makes it a convenient choice for older or custom vehicle models.

For industrial conveyor systems, 399A-393A Bearing’s open design allows for easy lubrication, reducing downtime. The steel cage adds extra strength, making it suitable for high-load scenarios.

What Makes 399A-393A Bearing a Preferred Choice?
The 399A-393A Bearing stands out in applications like gearboxes and drivetrains due to its balanced load capacity and smooth operation. Its standard radial clearance offers flexibility for different installation needs.

In robotics, 399A-393A Bearing’s precise engineering ensures accurate movement in robotic arms and automation systems. The ABEC-1 rating provides a good balance of performance and cost for most industrial uses.

Built for Heavy-Duty Use: 399A-393A Bearing
The 399A-393A Bearing excels in mining equipment, where its robust design withstands extreme loads and harsh environments. The tapered rollers distribute stress evenly, extending service life.

For wind turbines, 399A-393A Bearing’s ability to handle dynamic radial and thrust loads makes it a reliable component. The temperature range ensures performance in both hot and cold climates.

Automotive vs Aerospace: Applications of 399A-393A Bearing
In automotive systems, 399A-393A Bearing is often found in axles and transmissions, offering durability and ease of maintenance. The inch measurements align with many US-made vehicle specifications.

For aerospace ground support equipment, 399A-393A Bearing provides dependable performance in load-handling mechanisms. Its compliance with RoHS and REACH standards ensures environmental safety.