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TS (Single Row Tapered Roller Bearings) (Imperial) 390A-393

TS (Single Row Tapered Roller Bearings) (Imperial) 390A-393

The 390A-393 is a single-row tapered roller bearing with a 2.5″ bore and 4.3307″ 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 2.1 lb, it balances strength and manageability. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number 390A-393
  • Brand TFL
  • Interchangeable Timken
  • Size 2.5" x 4.3307" x 1.063"
  • Bore Dia 2.5"
  • 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 1.063"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.063"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.06"
  • Cup Backface ToClear Radius 0.03"
  • Cone Frontface Backing Diameter 2.76"
  • Cone Backface Backing Diameter 2.87"
  • Cup Frontface Backing Diameter 4.21"
  • 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 390A
  • Cup Part Number 393
  • 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 2.1 lb

Features

Performance Features of 390A-393 Bearing

390A-393 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 22,200 lbf, making it suitable for demanding industrial applications.
The steel cage ensures proper roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs reliably in various environments.

How Is 390A-393 Bearing Engineered for Reliability?

390A-393 Bearing features a single-row tapered roller design, optimised for handling both radial and thrust loads.
The chrome steel construction enhances durability, while the standard radial clearance allows for smooth operation.
Its effective centre location of -0.03″ ensures precise alignment in machinery.
With ABEC-1 rating, it balances performance and cost-effectiveness for industrial use.

Built for Durability: 390A-393 Bearing

390A-393 Bearing’s robust chrome steel components withstand heavy loads up to 28,100 lbf static radial capacity.
The tapered roller design distributes stress evenly, reducing wear and prolonging service life.
Its open seal type facilitates easy lubrication maintenance when required.
Weighing just 2.1 lb, it combines strength with manageable size for various applications.

Steel vs Ceramic Bearings: Strengths of 390A-393 Bearing

390A-393 Bearing utilises chrome steel for both rollers and rings, offering excellent strength-to-weight ratio.
This material choice provides good resistance to wear while maintaining affordability compared to ceramic options.
The bearing’s 4.3307″ outer diameter and 2.5″ bore accommodate substantial shaft sizes.
Its standard C3/C4/C5 radial clearance options allow for flexibility in different operating conditions.

Application

How Does 390A-393 Bearing Improve Performance?
390A-393 Bearing is commonly used in industrial equipment like conveyor systems and gearboxes, where its tapered roller design efficiently handles combined loads. The chrome steel construction ensures durability even in demanding environments.
In automotive applications, 390A-393 Bearing supports heavy-duty components such as wheel hubs and differentials, providing reliable performance under high stress. Its inch sizing makes it a preferred choice for American-made vehicles.
For automation systems, 390A-393 Bearing’s open design allows easy lubrication, maintaining smooth operation in robotic arms and assembly lines. The steel cage adds stability during high-speed movements.
Medical devices benefit from 390A-393 Bearing’s precise radial clearance, ensuring accuracy in imaging equipment. The standard ABEC-1 rating meets the needs of most diagnostic machines.

Built for Heavy-Duty Use: 390A-393 Bearing
390A-393 Bearing excels in construction machinery, where its dynamic radial load capacity supports excavators and cranes. The tapered rollers distribute weight evenly, reducing wear.
Farm equipment like tractors rely on 390A-393 Bearing for its ability to handle dirt and debris. The open seal type simplifies cleaning and maintenance in rough conditions.
In railway applications, 390A-393 Bearing’s temperature tolerance ensures performance in varying climates. Its steel cage withstands constant vibrations on tracks.

Automotive vs Aerospace: Applications of 390A-393 Bearing
In automotive settings, 390A-393 Bearing is ideal for drivetrains, offering smooth power transmission. The inch measurements align with standard US automotive parts.
For aerospace ground equipment, 390A-393 Bearing provides reliable support in loading systems. Its chrome steel rollers resist corrosion from outdoor exposure.

Where Is 390A-393 Bearing Used?
390A-393 Bearing fits well in mining equipment, where its robust design handles extreme loads. The standard radial clearance allows for slight misalignments.
Printing presses use 390A-393 Bearing for its consistent performance at moderate speeds. The steel cage keeps rollers aligned during repetitive motions.
In food processing machinery, 390A-393 Bearing’s open design permits easy cleaning. The temperature range suits both hot and cold production lines.

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