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TS (Single Row Tapered Roller Bearings) (Imperial) 6391-6321

TS (Single Row Tapered Roller Bearings) (Imperial) 6391-6321

The 6391-6321 is a single-row tapered roller bearing with a 2.36″ bore and 5.19″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 72,300 lbf radially and 10,400 lbf thrust, making it a robust choice for heavy-duty applications.

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

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

Weighing 7.9 lb, it’s built to last while meeting RoHS and REACH standards for safety and compliance. The standard radial clearance ensures easy installation and maintenance.

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Product Parameters

  • Part Number 6391-6321
  • Brand TFL
  • Interchangeable Timken
  • Size 2.3617" x 5.1875" x 2.125"
  • Bore Dia 2.3617"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 5.1875"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 2.205"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 1.75"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 2.125"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 2.91"
  • Cone Backface Backing Diameter 3.15"
  • Cup Frontface Backing Diameter 4.96"
  • Cup Backface Backing Diameter 4.53"
  • Cage Cone Frontface Clearance 0.05"
  • Cage Cone Backface Clearance 0.13"
  • Effective Center Location -0.76"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 6391
  • Cup Part Number 6321
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 6300
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 72300 lbf
  • Static Radial Load 90900 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 18700 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 10400 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 7.9 lb

Features

Why Choose 6391-6321 Bearing for Precision Tasks?

6391-6321 Bearing is crafted with chrome steel rings and rollers, ensuring strength and durability for combined load applications.
Its dynamic radial load capacity reaches 72,300 lbf, making it suitable for demanding industrial environments.

The single-row tapered roller design provides effective load distribution, enhancing performance and longevity.
With a standard radial clearance, it offers reliable operation across a temperature range of -30° to 110°C.

The steel cage maintains roller alignment, reducing friction and wear over time.
This bearing is compatible with Timken models, ensuring easy replacement and interchangeability.

Application

Industrial Uses of 6391-6321 Bearing
The 6391-6321 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 6391-6321 Bearing Used?
You’ll often find the 6391-6321 Bearing in automotive applications, such as wheel hubs and differential systems, thanks to its ability to manage both radial and thrust loads. The inch sizing makes it a fit for many North American vehicle models.

Built for Heavy-Duty Use: 6391-6321 Bearing
In industrial settings, the 6391-6321 Bearing excels in conveyor systems and gearboxes, where its open design simplifies lubrication and maintenance. The steel cage adds extra strength for long-lasting performance.

Automotive vs Aerospace: Applications of 6391-6321 Bearing
While the 6391-6321 Bearing is popular in automotive wheel assemblies, it’s also suitable for aerospace ground support equipment. Its ABEC-1 rating ensures reliable precision for less critical aerospace applications.

Perfect Fit for Automation: 6391-6321 Bearing
The 6391-6321 Bearing works well in automated machinery, particularly in robotic arms and assembly lines, where smooth rotation is key. Its standard radial clearance offers flexibility for various operational needs.

Q&A

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