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

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

The 390-393A is a single-row tapered roller bearing with a 2.25″ 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 2.1 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it meets environmental and safety requirements.

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Product Parameters

  • Part Number 390-393A
  • Brand TFL
  • Interchangeable Timken
  • Size 2.25" x 4.4375" x 0.8751"
  • Bore Dia 2.25"
  • 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 2.6"
  • Cone Backface Backing Diameter 2.76"
  • 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 390
  • 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 2.1 lb

Features

Performance Features of 390-393A Bearing

390-393A Bearing is crafted with chrome steel rings and rollers, offering robust performance under combined loads.
Its dynamic radial load capacity reaches 22,200 lbf, making it suitable for heavy-duty applications.
The steel cage ensures proper roller alignment, enhancing durability and reducing friction.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

How Is 390-393A Bearing Engineered for Reliability?

390-393A Bearing features a single-row tapered roller design, optimised for combined load handling.
The chrome steel construction provides excellent resistance to wear and fatigue.
Its dynamic thrust rating of 3,970 lbf ensures consistent performance in demanding environments.
The standard radial clearance options allow for flexibility in different applications.

Built for Durability: 390-393A Bearing

390-393A Bearing’s tapered roller design distributes loads evenly, extending its service life.
The chrome steel materials resist wear, maintaining performance under high radial loads up to 28,100 lbf.
Its open seal type simplifies lubrication, ensuring smooth operation.
With an ABEC-1 rating, it balances precision and affordability.

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

390-393A Bearing uses chrome steel for both rollers and rings, offering a cost-effective solution.
The steel construction provides reliable performance under heavy loads and high temperatures.
Its tapered roller design ensures efficient load distribution, reducing stress on components.
With a weight of 2.1 lb, it maintains a good balance between strength and portability.

Application

Essential Roles of 390-393A Bearing
390-393A Bearing is commonly used in industrial machinery, especially where combined radial and thrust loads are present, like gearboxes and heavy-duty conveyor systems. Its chrome steel construction ensures durability in demanding environments.

In automotive applications, 390-393A Bearing supports wheel hubs and differential systems, providing reliable performance under varying loads. The inch sizing makes it compatible with many North American vehicle models.

For automation equipment, 390-393A Bearing’s tapered roller design offers stability in robotic arms and assembly line machinery. The open seal type allows for easy lubrication, extending its service life.

Where Is 390-393A Bearing Used?
You’ll often find 390-393A Bearing in agricultural machinery, where it handles heavy loads in equipment like tractors and harvesters. Its robust design withstands harsh outdoor conditions.

The bearing also works well in construction equipment, such as cranes and excavators, thanks to its high dynamic radial load capacity. The steel cage adds extra strength for long-term use.

Built for Heavy-Duty Use: 390-393A Bearing
390-393A Bearing excels in mining equipment, where its tapered rollers manage extreme loads and vibrations. The chrome steel rollers resist wear even in abrasive environments.

In forestry machinery, this bearing supports log splitters and sawmill components, ensuring smooth operation under heavy stress. The standard radial clearance offers flexibility for different applications.

Automotive vs Aerospace: Applications of 390-393A Bearing
In automotive systems, 390-393A Bearing is ideal for drivetrain components, balancing radial and thrust loads efficiently. Its ABEC-1 rating ensures consistent performance.

For aerospace ground support equipment, the bearing provides reliability in tow tractors and loading systems. The temperature range suits both cold and moderately warm operating conditions.

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