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TS (Single Row Tapered Roller Bearings) (Imperial) 28980-28921

TS (Single Row Tapered Roller Bearings) (Imperial) 28980-28921

The 28980-28921 is a single-row tapered roller bearing with a 2.36″ bore and 3.94″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 23800 lbf radially and 4500 lbf thrust, making it versatile for various applications.

Its open design allows easy lubrication, while the steel cage ensures durability under heavy use. 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 or automotive systems where combined loads are common.

Weighing 1.7 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and sustainable use.

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Product Parameters

  • Part Number 28980-28921
  • Brand TFL
  • Interchangeable Timken
  • Size 2.3613" x 3.937" x 1"
  • Bore Dia 2.3613"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.937"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.7813"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 2.64"
  • Cone Backface Backing Diameter 2.87"
  • Cup Frontface Backing Diameter 3.82"
  • Cup Backface Backing Diameter 3.50"
  • Cage Cone Frontface Clearance 0.09"
  • Cage Cone Backface Clearance 0.05"
  • Effective Center Location -0.1"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 28980
  • Cup Part Number 28921
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 28900
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 23800 lbf
  • Static Radial Load 33500 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 6180 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 4500 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 1.7 lb

Features

Performance Features of 28980-28921 Bearing

28980-28921 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 23,800 lbf, ensuring reliable performance in demanding conditions.

The tapered roller design distributes loads evenly, reducing stress and extending service life.
With a temperature range of -30° to 110°C, it performs well in various environments.

The steel cage maintains roller alignment, enhancing stability and reducing wear.
Its standard radial clearance options provide flexibility for different applications.

Application

Industrial Uses of 28980-28921 Bearing
This bearing is commonly used in heavy machinery like construction equipment, where its tapered roller design handles combined radial and thrust loads effectively. The chrome steel construction ensures durability even in demanding environments.

Where Is 28980-28921 Bearing Used?
You’ll often find 28980-28921 Bearing in agricultural machinery, particularly in gearboxes and wheel hubs. Its inch sizing makes it a reliable choice for North American equipment manufacturers.

Built for Heavy-Duty Use: 28980-28921 Bearing
28980-28921 Bearing works well in mining applications, supporting conveyor systems and crushers. The open design allows for easy lubrication, extending its service life under constant load.

Automotive vs Aerospace: Applications of 28980-28921 Bearing
In automotive settings, 28980-28921 Bearing fits well in truck differentials due to its robust load capacity. For aerospace, it’s less common but can be found in ground support equipment.

Essential Roles of 28980-28921 Bearing
This bearing is a go-to for industrial fans and pumps, where its standard radial clearance ensures smooth operation. The steel cage adds stability during high-speed rotations.

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