+86 15806631151 [email protected]
TFL BEARINGS
REQUEST A QUOTE
389-384D TDO (Two-Row Double-Outer Race) (Imperial)

389-384D TDO (Two-Row Double-Outer Race) (Imperial)

The 389-384D is a two-row tapered roller bearing with a 2.188″ bore and 3.937″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 42200 lbf and is designed for long-lasting performance in demanding conditions.

Its double-row construction provides extra stability, while the open design allows for easy lubrication. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

With standard radial clearance and ABEC-1 precision, it’s a reliable choice for heavy-duty applications like truck axles or industrial gearboxes. The steel cage ensures durability under high stress.

Weighing 3.41 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe and versatile option for various machinery needs.

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

Product Parameters

  • Part Number 389-384D
  • Brand TFL
  • Size 2.188" x 3.937" x 0.864"
  • Bore Dia 2.188"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.937"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 1.6875"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 0.864"
  • 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 2.56"
  • Cup Frontface Backing Diameter 3.68"
  • Cage Cone Backface Clearance 0.03"
  • Dynamic Radial Load 42200 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 389
  • Cup Part Number 384D
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 385
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 6280 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 3810 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 10900 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 3.41 lb

Features

Why Choose 389-384D Bearing for Combined Loads?

389-384D Bearing is built with chrome steel rings and rollers, offering robust performance under combined radial and thrust loads.
Its dynamic radial load capacity reaches 42,200 lbf, making it suitable for heavy-duty applications.
The double-row tapered roller design ensures stability and reduces wear over time.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

How Is 389-384D Bearing Engineered for Reliability?

389-384D Bearing features a steel cage that maintains roller alignment, enhancing durability.
The standard radial clearance options allow for flexibility in different operational settings.
Its open design simplifies lubrication, ensuring consistent performance.
The ABEC-1 rating confirms its precision and reliability for industrial use.

Built for Durability: 389-384D Bearing

389-384D Bearing’s chrome steel construction resists wear, extending its service life.
The double-row design distributes loads evenly, reducing stress on individual components.
It operates efficiently within a wide temperature range, from -30° to 110°C.
With a weight of 3.41 lb, it balances strength and manageability.

Steel vs Ceramic Bearings: Strengths of 389-384D Bearing

389-384D Bearing uses chrome steel for both rings and rollers, providing excellent strength and durability.
The steel cage ensures reliable performance under high dynamic radial loads.
Its tapered roller design is optimised for combined load applications.
The bearing’s standard radial clearance options offer versatility in various industrial settings.

Performance Features of 389-384D Bearing

389-384D Bearing delivers a dynamic radial load capacity of 42,200 lbf, ideal for demanding environments.
The double-row tapered roller design enhances load distribution and operational stability.
It requires regular lubrication to maintain peak performance.
With an ABEC-1 rating, it meets precision standards for industrial machinery.

Application

Industrial Uses of 389-384D Bearing
The 389-384D Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its double-row design handles combined radial and thrust loads efficiently. Its chrome steel construction ensures durability in tough working conditions.

Where Is 389-384D Bearing Used?
You’ll often find the 389-384D Bearing in automotive applications, particularly in wheel hubs and differential systems, where its tapered roller design provides smooth performance. The inch sizing makes it a good fit for American-made vehicles.

Built for Heavy-Duty Use: 389-384D Bearing
In industrial settings, the 389-384D Bearing supports conveyor systems and gearboxes, thanks to its high dynamic radial load capacity. The open seal type allows for easy lubrication, extending its service life.

Automotive vs Aerospace: Applications of 389-384D Bearing
While the 389-384D Bearing is popular in automotive systems for its reliability, it’s also found in aerospace ground support equipment. Its standard radial clearance offers flexibility for various operational needs.

Perfect Fit for Automation: 389-384D Bearing
The 389-384D Bearing works well in automated machinery, such as robotic arms, where precision and load capacity are key. Its steel cage adds stability, making it suitable for repetitive movements.

Q&A

SEND INQUIRY