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TS (Single Row Tapered Roller Bearings) (Imperial) 3980-3919RB

TS (Single Row Tapered Roller Bearings) (Imperial) 3980-3919RB

The 3980-3919RB is a single-row tapered roller bearing with a 2.375″ bore and 4.4375″ outer diameter, crafted from sturdy chrome steel. It manages combined loads up to 31200 lbf radially and 5570 lbf thrust, suitable for demanding applications.

Its open design simplifies lubrication, while the steel cage ensures durability. The bearing operates smoothly in temperatures ranging from -30°C to 110°C, making it versatile for various conditions.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for heavy-duty machinery or automotive systems where combined loads are common.

Weighing 2.8 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 3980-3919RB
  • Brand TFL
  • Interchangeable Timken
  • Size 2.375" x 4.4375" x 1.1875"
  • Bore Dia 2.375"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.4375"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.183"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.9687"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.1875"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 2.68"
  • Cone Backface Backing Diameter 2.95"
  • Cup Frontface Backing Diameter 4.18"
  • Cup Backface Backing Diameter 3.90"
  • Cage Cone Frontface Clearance 0.08"
  • Cage Cone Backface Clearance 0.06"
  • Effective Center Location -0.18"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 3980
  • Cup Part Number 3919RB
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 3900
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 31200 lbf
  • Static Radial Load 43000 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 8090 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 5570 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 2.8 lb

Features

How Does 3980-3919RB Bearing Handle Combined Loads?

3980-3919RB Bearing is built with chrome steel rings and rollers, offering strong resistance to both radial and thrust loads.
Its dynamic radial load capacity reaches 31,200 lbf, ensuring reliable performance in demanding conditions.
The steel cage keeps the tapered rollers aligned, reducing friction and extending service life.
With a temperature range of -30° to 110°C, it performs well in various environments.

Designed for Durability: 3980-3919RB Bearing

3980-3919RB Bearing features a single-row tapered roller design, ideal for combined load applications.
The chrome steel construction provides excellent wear resistance, enhancing its longevity.
Its standard radial clearance ensures smooth operation, while the open design simplifies maintenance.
Weighing just 2.8 lb, it balances strength and ease of handling.

Structural Advantages of 3980-3919RB Bearing

3980-3919RB Bearing’s precise cone and cup dimensions ensure optimal load distribution.
The tapered roller design minimises friction, making it suitable for high-speed applications.
With a static radial load capacity of 43,000 lbf, it handles heavy-duty tasks with ease.
Its ABEC-1 rating guarantees consistent performance in industrial settings.

Application

Industrial Uses of 3980-3919RB Bearing
The 3980-3919RB 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.

Where Is 3980-3919RB Bearing Used?
You’ll often find 3980-3919RB Bearing in automotive axles and wheel hubs, where its ABEC-1 rating provides reliable performance. The open design simplifies lubrication, making it a practical choice for maintenance-heavy applications.

Built for Heavy-Duty Use: 3980-3919RB Bearing
3980-3919RB Bearing excels in industrial fans and conveyor systems, thanks to its high dynamic radial load capacity. The steel cage adds stability, ensuring smooth operation under continuous stress.

Automotive vs Aerospace: Applications of 3980-3919RB Bearing
In automotive settings, 3980-3919RB Bearing supports drivetrain components, while its inch sizing suits older machinery. Though not typically used in aerospace, its precision makes it versatile for other high-load scenarios.

Perfect Fit for Automation: 3980-3919RB Bearing
3980-3919RB Bearing works well in automated assembly lines, where its tapered rollers manage radial and thrust loads seamlessly. The standard radial clearance option balances performance and ease of installation.

Q&A

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