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TS (Single Row Tapered Roller Bearings) (Imperial) 390A-394A

TS (Single Row Tapered Roller Bearings) (Imperial) 390A-394A

The 390A-394A 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 1.8 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for diverse environments.

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Product Parameters

  • Part Number 390A-394A
  • Brand TFL
  • Interchangeable Timken
  • Size 2.5" x 4.3307" x 0.8661"
  • 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 0.7411"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 0.8661"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.06"
  • Cup Backface ToClear Radius 0.050"
  • Cone Frontface Backing Diameter 2.76"
  • Cone Backface Backing Diameter 2.87"
  • Cup Frontface Backing Diameter 4.15"
  • 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 390A
  • Cup Part Number 394A
  • 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 1.8 lb

Features

How Is 390A-394A Bearing Engineered for Reliability?

390A-394A Bearing features chrome steel rings and rollers, ensuring strength and durability under combined loads.
Its dynamic radial load capacity reaches 22,200 lbf, making it suitable for demanding industrial applications.
The steel cage maintains roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs reliably in various environments.

What Makes 390A-394A Bearing Suitable for High-Temperature Applications?

390A-394A Bearing is built with chrome steel components, which resist heat and maintain performance up to 110°C.
The open design allows for effective lubrication, preventing overheating during prolonged use.
Its standard radial clearance options ensure smooth operation even under thermal expansion.
This bearing is ideal for machinery operating in challenging thermal conditions.

Built for Durability: 390A-394A Bearing

390A-394A Bearing’s tapered roller design distributes loads evenly, enhancing its longevity.
The chrome steel construction provides excellent resistance to wear and fatigue.
With a static radial load capacity of 28,100 lbf, it handles heavy-duty applications with ease.
Its robust design reduces the need for frequent maintenance, saving time and costs.

Steel vs Ceramic Bearings: Strengths of 390A-394A Bearing

390A-394A Bearing uses high-quality chrome steel for both rollers and rings, offering superior strength.
This material choice ensures reliable performance under high radial and thrust loads.
The steel cage further enhances durability, making it a practical choice for industrial use.
Its compliance with RoHS and REACH standards adds to its environmental and safety benefits.

Application

Industrial Uses of 390A-394A Bearing
390A-394A Bearing is commonly used in heavy machinery, such as construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in demanding environments.

In automotive applications, 390A-394A Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its imperial sizing makes it a preferred choice for North American vehicle models.

For industrial conveyor systems, 390A-394A Bearing’s open design allows for easy lubrication, extending its service life in high-use scenarios. The steel cage adds stability, making it suitable for continuous operation.

Where Is 390A-394A Bearing Used?
390A-394A Bearing can be found in mining equipment, where its robust design withstands heavy radial and thrust loads. The standard radial clearance ensures smooth operation even under stress.

In power transmission systems, 390A-394A Bearing supports shafts and gears, thanks to its tapered roller construction. The ABEC-1 rating provides sufficient precision for most industrial needs.

Built for Heavy-Duty Use: 390A-394A Bearing
390A-394A Bearing excels in applications like forklifts and cranes, where its dynamic load capacity ensures reliable performance. The chrome steel rollers resist wear, even under constant use.

For railway applications, 390A-394A Bearing’s combined load capability makes it ideal for axle boxes. The steel cage maintains roller alignment, enhancing longevity.

Automotive vs Aerospace: Applications of 390A-394A Bearing
In automotive systems, 390A-394A Bearing is often used in drivetrains, where its tapered rollers manage varying loads efficiently. The imperial sizing simplifies integration with existing designs.

For aerospace ground equipment, 390A-394A Bearing provides dependable performance in landing gear mechanisms. Its temperature range suits both cold and moderate climates.

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