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TS (Single Row Tapered Roller Bearings) (Imperial) 3984-3919RB

TS (Single Row Tapered Roller Bearings) (Imperial) 3984-3919RB

The 3984-3919RB is a single-row tapered roller bearing with a 2.625″ bore and 4.4375″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 31200 lbf radially and 5570 lbf thrust, suitable for demanding 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.

This model is interchangeable with Timken bearings, making it a practical choice for replacements. Ideal for heavy-duty machinery or automotive systems where combined loads are common.

Weighing 2.5 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number 3984-3919RB
  • Brand TFL
  • Interchangeable Timken
  • Size 2.625" x 4.4375" x 1.1875"
  • Bore Dia 2.625"
  • 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 3.54"
  • Cone Backface Backing Diameter 3.15"
  • 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 3984
  • 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 2.5 lb

Features

How Does 3984-3919RB Bearing Handle Combined Loads?

3984-3919RB 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 heavy-duty applications.

The steel cage maintains proper roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs well in various environmental conditions.

3984-3919RB Bearing’s standard radial clearance allows for smooth operation under combined loads.
Its ABEC-1 rating ensures consistent precision for industrial applications.

Application

Industrial Uses of 3984-3919RB Bearing
The 3984-3919RB Bearing is commonly used in heavy machinery like construction equipment and mining gear, where its tapered roller design handles combined radial and thrust loads effectively.
Its chrome steel construction ensures durability in tough environments, making it a reliable choice for industrial applications.

Where Is 3984-3919RB Bearing Used?
You’ll often find the 3984-3919RB Bearing in automotive systems, particularly in wheel hubs and differentials, where its high load capacity supports smooth performance.
The imperial sizing makes it a good fit for North American vehicle models, ensuring easy compatibility.

Built for Heavy-Duty Use: 3984-3919RB Bearing
This bearing excels in agricultural machinery, such as tractors and harvesters, thanks to its robust steel cage and tapered roller design.
It’s also suitable for conveyor systems, where its ability to handle dynamic loads keeps operations running smoothly.

Automotive vs Aerospace: Applications of 3984-3919RB Bearing
In automotive settings, the 3984-3919RB Bearing is ideal for transmissions and axles, offering reliable performance under heavy loads.
While not typically used in aerospace, its precision makes it a solid choice for ground support equipment and other industrial uses.

Perfect Fit for Automation: 3984-3919RB Bearing
The 3984-3919RB Bearing works well in automated assembly lines, where its tapered rollers provide stability and reduce friction.
Its open design allows for easy lubrication, ensuring long service life in high-use scenarios.

Q&A

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