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TS (Single Row Tapered Roller Bearings) (Imperial) 28985-28921A

TS (Single Row Tapered Roller Bearings) (Imperial) 28985-28921A

The 28985-28921A is a single-row tapered roller bearing with a 2.375″ bore and 3.937″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 23800 lbf radially and 4500 lbf in thrust, making it versatile for various applications.

Its open design allows for 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 28985-28921A
  • Brand TFL
  • Interchangeable Timken
  • Size 2.375" x 3.937" x 1"
  • Bore Dia 2.375"
  • 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 0.03"
  • Cone Frontface Backing Diameter 2.64"
  • Cone Backface Backing Diameter 2.87"
  • Cup Frontface Backing Diameter 3.82"
  • Cup Backface Backing Diameter 3.58"
  • 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 28985
  • Cup Part Number 28921A
  • 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

How Does 28985-28921A Bearing Handle Combined Loads?

28985-28921A Bearing is built with chrome steel rings and rollers, offering strong resistance to both radial and thrust loads.
Its dynamic radial load capacity reaches 23,800 lbf, ensuring reliable performance in demanding conditions.
The steel cage keeps the rollers aligned, reducing wear and extending the bearing’s service life.
With a temperature range of -30° to 110°C, it performs well in various environments.

Structural Advantages of 28985-28921A Bearing

28985-28921A Bearing features a single-row tapered roller design, optimised for combined load applications.
The chrome steel construction enhances durability and resistance to wear under heavy loads.
Its standard radial clearance ensures smooth operation, while the open seal type allows for easy lubrication.
The bearing’s effective centre location of -0.1″ helps maintain stability during operation.

Why Choose 28985-28921A Bearing for Precision Tasks?

28985-28921A Bearing’s tapered roller design provides precise load distribution, reducing friction and heat generation.
The chrome steel rollers and rings ensure consistent performance even under high radial and thrust loads.
With an ABEC-1 rating, it meets precision standards for various industrial applications.
The bearing’s temperature range and standard radial clearance make it versatile for different operating conditions.

Application

Industrial Uses of 28985-28921A Bearing
The 28985-28921A Bearing is widely used in heavy machinery, such as construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. Its chrome steel construction ensures durability even in demanding environments.

In automotive applications, 28985-28921A Bearing supports wheel hubs and drivetrain components, providing reliable performance under radial and thrust loads. The inch sizing makes it compatible with many North American vehicle models.

For industrial conveyor systems, 28985-28921A Bearing’s open design simplifies maintenance, while its steel cage enhances longevity. It’s a solid choice for high-load scenarios where consistent operation is key.

What Makes 28985-28921A Bearing a Preferred Choice?
The 28985-28921A Bearing excels in applications like gearboxes and pumps, where its tapered rollers manage both radial and axial forces smoothly. Its ABEC-1 rating ensures dependable precision for general industrial use.

In mining equipment, 28985-28921A Bearing’s robust design withstands harsh conditions, thanks to its chrome steel rollers and rings. The standard radial clearance offers flexibility for various load requirements.

Built for Heavy-Duty Use: 28985-28921A Bearing
The 28985-28921A Bearing is ideal for forestry machinery, where its single-row tapered rollers handle heavy combined loads with ease. The steel cage adds resilience, making it suitable for rough terrain.

In material handling systems, 28985-28921A Bearing’s inch dimensions and open design simplify installation and upkeep. Its temperature range of -30° to 110°C ensures performance in diverse climates.

Automotive vs Aerospace: Applications of 28985-28921A Bearing
In automotive settings, 28985-28921A Bearing is commonly found in truck axles, offering reliable load support. Its inch sizing aligns with many commercial vehicle standards.

For aerospace ground equipment, 28985-28921A Bearing provides sturdy performance in tow tractors and loading systems. The chrome steel components resist wear, even with frequent use.

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