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TS (Single Row Tapered Roller Bearings) (Imperial) 6554-6521

TS (Single Row Tapered Roller Bearings) (Imperial) 6554-6521

The 6554-6521 is a single-row tapered roller bearing with a 3-inch bore and 6.3125-inch outer diameter, built from sturdy chrome steel. It handles combined loads up to 83,300 lbf radially and 14,800 lbf thrust, making it suitable 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 industrial machinery, gearboxes, or automotive systems where combined loads are common.

Weighing 12.8 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

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Product Parameters

  • Part Number 6554-6521
  • Brand TFL
  • Interchangeable Timken
  • Size 3" x 6.3125" x 2.4687"
  • Bore Dia 3"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 6.3125"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 2.513"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 1.75"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 2.4687"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 4.41"
  • Cone Backface Backing Diameter 3.9"
  • Cup Frontface Backing Diameter 6.08"
  • Cup Backface Backing Diameter 5.55"
  • Cage Cone Frontface Clearance 0.06"
  • Cage Cone Backface Clearance 0.49"
  • Effective Center Location -0.86"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 6554
  • Cup Part Number 6521
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 6500
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 83300 lbf
  • Static Radial Load 118000 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 21600 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 14800 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 12.800 lb

Features

How Is 6554-6521 Bearing Engineered for Reliability?

6554-6521 Bearing is crafted from chrome steel, ensuring strength and durability under combined loads.
Its dynamic radial load capacity reaches 83,300 lbf, making it suitable for heavy-duty applications.

The tapered roller design distributes loads evenly, reducing stress and extending service life.
With a standard radial clearance, it offers reliable performance in various operating conditions.

6554-6521 Bearing operates efficiently within a temperature range of -30° to 110°C.
Its steel cage maintains roller alignment, ensuring smooth and consistent operation.

The open design simplifies lubrication, helping to maintain optimal performance over time.
This bearing is interchangeable with Timken models, providing flexibility for replacements.

Application

Industrial Uses of 6554-6521 Bearing
The 6554-6521 Bearing is a reliable choice for heavy machinery like construction equipment and mining gear, where combined radial and thrust loads are common. Its chrome steel construction ensures durability even in demanding environments.

Where Is 6554-6521 Bearing Used?
You’ll often find 6554-6521 Bearing in agricultural machinery, such as tractors and harvesters, where its tapered roller design handles uneven loads smoothly. The open seal type allows for easy lubrication, extending its service life.

Built for Heavy-Duty Use: 6554-6521 Bearing
In industrial fans and pumps, 6554-6521 Bearing provides stable performance thanks to its robust steel cage and precise tolerances. Its inch sizing makes it a versatile option for older machinery still using imperial measurements.

Automotive vs Aerospace: Applications of 6554-6521 Bearing
While 6554-6521 Bearing is popular in truck wheel hubs for its load capacity, it’s also suitable for aerospace ground support equipment. The ABEC-1 rating ensures consistent performance without over-engineering for less critical applications.

Perfect Fit for Automation: 6554-6521 Bearing
In conveyor systems and automated assembly lines, 6554-6521 Bearing’s single-row design simplifies installation and maintenance. The standard radial clearance option balances precision with adaptability for varying operational conditions.

Q&A

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