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TS (Single Row Tapered Roller Bearings) (Imperial) 6381-6321

TS (Single Row Tapered Roller Bearings) (Imperial) 6381-6321

The 6381-6321 is a single-row tapered roller bearing with a 2.1649″ bore and 5.1875″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 72300 lbf radially and 10400 lbf thrust, making it robust for heavy-duty use.

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

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for industrial machinery or automotive applications where high radial and thrust loads are common.

Weighing 8.3 lb, it’s built to last while meeting RoHS and REACH standards for safety and compliance. The ABEC-1 rating ensures dependable performance for general industrial use.

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Product Parameters

  • Part Number 6381-6321
  • Brand TFL
  • Interchangeable Timken
  • Size 2.1649" x 5.1875" x 2.125"
  • Bore Dia 2.1649"
  • 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 2.76"
  • Cone Backface Backing Diameter 2.99"
  • 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 6381
  • 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 8.3 lb

Features

Performance Features of 6381-6321 Bearing

6381-6321 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 72,300 lbf, making it suitable for heavy-duty applications.

The steel cage maintains roller alignment, reducing friction and wear during operation.
With a standard radial clearance, it ensures smooth performance in various conditions.

6381-6321 Bearing operates effectively within a temperature range of -30° to 110°C.
Its tapered roller design provides reliable handling of both radial and thrust loads.

The bearing requires lubrication to maintain optimal performance over time.
Its ABEC-1 rating ensures consistent precision for industrial applications.

Application

Industrial Uses of 6381-6321 Bearing
The 6381-6321 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 6381-6321 Bearing Used?
You’ll often find the 6381-6321 Bearing in automotive applications, particularly in wheel hubs and differential systems. Its inch sizing makes it a reliable choice for older or custom-built vehicles.

Built for Heavy-Duty Use: 6381-6321 Bearing
In industrial settings, the 6381-6321 Bearing supports conveyor systems and gearboxes, thanks to its high dynamic radial load capacity. The open design allows for easy lubrication, extending its service life.

Automotive vs Aerospace: Applications of 6381-6321 Bearing
While the 6381-6321 Bearing excels in automotive wheel assemblies, it’s also suitable for aerospace ground support equipment. Its ABEC-1 rating ensures consistent performance without over-engineering.

Perfect Fit for Automation: 6381-6321 Bearing
The 6381-6321 Bearing works well in automated machinery like packaging lines, where its tapered rollers manage both radial and thrust loads smoothly. Steel cage construction adds stability during high-speed operations.

Q&A

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