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TS (Single Row Tapered Roller Bearings) (Imperial) 389A-383X

TS (Single Row Tapered Roller Bearings) (Imperial) 389A-383X

The 389A-383X is a single-row tapered roller bearing with a 2.125″ bore and 3.937″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 24200 lbf radially and 3810 lbf thrust, making it versatile for various applications.

Its open design allows easy lubrication, while the steel cage ensures durability. The bearing operates smoothly in temperatures ranging from -30°C to 110°C, suitable for demanding environments.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for use in gearboxes, axles, or industrial machinery where combined loads are present.

Weighing 1.8 lb, it balances strength and manageability. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

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Product Parameters

  • Part Number 389A-383X
  • Brand TFL
  • Interchangeable Timken
  • Size 2.125" x 3.937" x 1.0001"
  • Bore Dia 2.125"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.937"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 0.864"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.875"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.0001"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.03"
  • Cup Backface ToClear Radius 0.050"
  • Cone Frontface Backing Diameter 2.36"
  • Cone Backface Backing Diameter 2.4"
  • Cup Frontface Backing Diameter 3.68"
  • Cup Backface Backing Diameter 3.50"
  • Cage Cone Frontface Clearance 0.11"
  • Cage Cone Backface Clearance 0.03"
  • Effective Center Location -0.12"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 389A
  • Cup Part Number 383X
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 385
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 24200 lbf
  • Static Radial Load 24100 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 6280 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 3810 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

Why Choose 389A-383X Bearing for Precision Tasks?

389A-383X Bearing is crafted from chrome steel, offering excellent resistance to combined loads.
Its dynamic radial load capacity of 24,200 lbf ensures reliable performance in demanding conditions.

The tapered roller design enhances stability and reduces friction during operation.
With a temperature range of -30° to 110°C, it performs well in various environments.

The steel cage maintains roller alignment, extending the bearing’s service life.
Its standard radial clearance options provide flexibility for different applications.

Application

Industrial Uses of 389A-383X Bearing
The 389A-383X Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads efficiently. Its chrome steel construction ensures durability even in demanding environments.

In automotive applications, 389A-383X Bearing supports wheel hubs and drivetrain components, providing reliable performance under high radial and thrust loads. The inch sizing makes it a practical choice for North American vehicle models.

For industrial conveyor systems, 389A-383X Bearing’s open design allows for easy lubrication, extending service life in continuous operation. The steel cage adds stability, reducing wear during high-speed rotations.

Where Is 389A-383X Bearing Used?
You’ll often find 389A-383X Bearing in mining equipment, where its robust design withstands harsh conditions like dust and heavy vibrations. The tapered rollers distribute loads evenly, preventing premature failure.

In manufacturing plants, 389A-383X Bearing is ideal for gearboxes and pulley systems, thanks to its precise tolerances and smooth operation. The ABEC-1 rating ensures consistent performance without unnecessary complexity.

Built for Heavy-Duty Use: 389A-383X Bearing
The 389A-383X Bearing excels in forestry machinery, handling uneven loads and shocks with ease. Its chrome steel rollers and rings resist deformation under extreme pressure.

For railway applications, 389A-383X Bearing provides reliable support in axle boxes, where its combined load capacity is crucial. The standard radial clearance offers a balance between performance and ease of installation.

Automotive vs Aerospace: Applications of 389A-383X Bearing
In automotive systems, 389A-383X Bearing is a go-to for differentials and transmissions, offering a balance of strength and precision. The inch measurements simplify replacements in older vehicles.

For aerospace ground equipment, 389A-383X Bearing handles heavy loads in tow tractors and loading platforms. Its temperature range ensures reliability in varying weather conditions.

Q&A

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