+86 15806631151 [email protected]
TFL BEARINGS
REQUEST A QUOTE
390A-394D TDO (Two-Row Double-Outer Race) (Imperial)

390A-394D TDO (Two-Row Double-Outer Race) (Imperial)

The 390A-394D is a two-row tapered roller bearing with a 2.5″ bore and 4.3307″ outer diameter, built from sturdy chrome steel for long-lasting performance. It handles combined loads with a dynamic radial capacity of 38700 lbf and operates smoothly in temperatures from -30°C to 110°C.

Its double-row design provides extra stability, while the open seal allows for easy lubrication. The bearing is ABEC-1 rated and comes with standard radial clearance, though C3/C4/C5 options are available.

This model is ideal for heavy-duty applications like truck axles or industrial gearboxes where combined loads are common. Weighing 4 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a reliable choice for replacements or new installations.

Get A Free Quote
    Description Features Application Q&A Featured Products Our Process

Product Parameters

  • Part Number 390A-394D
  • Brand TFL
  • Size 2.5" x 4.3307" x 0.866"
  • Bore Dia 2.5"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.3307"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 1.8125"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 0.866"
  • Cone Width Tolerance +0.002" to -0.01
  • Bearing Width Across Cups 2.0624"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.03"
  • Cone Backface Backing Diameter 2.87"
  • Cup Frontface Backing Diameter 4.12"
  • Cage Cone Backface Clearance 0.05"
  • Dynamic Radial Load 38700 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 390A
  • Cup Part Number 394D
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 395
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 5760 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 3970 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 10000 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 4 lb

Features

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

390A-394D Bearing features a double-row tapered roller design, providing strong resistance to combined radial and thrust loads.
Its chrome steel construction ensures durability, with a dynamic radial load capacity of 38,700 lbf.
The steel cage maintains roller alignment, reducing wear and extending service life.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

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

390A-394D Bearing is built with chrome steel rings and rollers, offering excellent heat resistance up to 110°C.
Its double-row design distributes loads evenly, enhancing performance under stress.
The standard radial clearance options allow for flexibility in different operating conditions.
This bearing is ideal for applications requiring consistent performance in varying temperatures.

Designed for Durability: 390A-394D Bearing

390A-394D Bearing’s tapered roller design ensures long-lasting performance in demanding environments.
The chrome steel components resist wear, while the steel cage provides stability.
With a dynamic radial rating of 10,000 lbf for two rows, it handles heavy loads efficiently.
Its robust construction makes it a reliable choice for industrial applications.

Flanged vs Non-Flanged: Benefits of 390A-394D Bearing

390A-394D Bearing’s standard cup design simplifies installation and maintenance.
The double-row configuration offers superior load distribution compared to single-row bearings.
Its chrome steel rollers and rings ensure smooth operation under combined loads.
This bearing is a practical solution for applications requiring durability and ease of use.

Application

Industrial Uses of 390A-394D Bearing
The 390A-394D Bearing is commonly used in heavy machinery, such as construction equipment and mining vehicles, where its double-row design handles combined radial and thrust loads effectively. Its chrome steel construction ensures durability in demanding environments.

Where Is 390A-394D Bearing Used?
You’ll often find the 390A-394D Bearing in agricultural machinery, like tractors and harvesters, where its robust design supports high loads and rough terrain. The open seal type allows for easy lubrication, extending its service life.

Built for Heavy-Duty Use: 390A-394D Bearing
In industrial gearboxes, the 390A-394D Bearing provides reliable performance under constant stress, thanks to its tapered roller design. The standard radial clearance makes it versatile for various applications.

Automotive vs Aerospace: Applications of 390A-394D Bearing
In automotive systems, the 390A-394D Bearing is ideal for wheel hubs and differentials, offering stability under heavy loads. For aerospace, its precision and durability make it suitable for landing gear components.

Key Fields for 390A-394D Bearing
The 390A-394D Bearing is a go-to choice for railway applications, where its ability to handle dynamic loads ensures smooth operation. Its inch sizing makes it compatible with many North American industrial standards.

Q&A

SEND INQUIRY