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28921A Single Cups (Imperial)

28921A Single Cups (Imperial)

The 28921A is a single cup tapered roller bearing with an outer diameter of 3.937 inches and a width of 0.7813 inches, crafted from durable chrome steel. It fits well in imperial-sized applications and operates smoothly in temperatures from -30°C to 110°C.

Designed as a standard cup, it’s part of the 28900 series and is interchangeable with Timken models, making it a versatile choice for replacements. The ABEC-1 rating ensures reliable precision for general industrial use.

Its sturdy construction handles moderate loads, while the chrome steel material offers good wear resistance. Ideal for machinery like gearboxes or conveyors where tapered roller bearings are needed.

Compliant with RoHS and REACH standards, it’s a safe and practical option for various engineering applications. The compact design fits neatly into assemblies without taking up much space.

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Product Parameters

  • Part Number 28921A
  • Brand TFL
  • Interchangeable Timken
  • Size 3.58" x 3.937" x 0.7813"
  • Outer Dia 3.937"
  • Outer Dia Tolerance +0.001" to 0
  • Cup Width 0.7813"
  • Cup Width Tolerance +0.002" to -0.01
  • Cup Backface ToClear Radius 0.03"
  • Cup Frontface Backing Diameter 3.82"
  • Cup Backface Backing Diameter 3.58"
  • System of Measurement Inch
  • Roller Bearing Type Tapered
  • Type Cups
  • Bearing Part Number 28980-28921A , 28985-28921A , 28990-28921A , 28995-28921A
  • Cups Type Standard
  • Series 28900
  • Ring Material Chrome Steel
  • Temperature Range -30° to 110 °C
  • ABEC Rating ABEC-1
  • RoHS Compliant
  • REACH Compliant

Features

Why Choose 28921A Bearing for Precision Tasks?

28921A Bearing is crafted from chrome steel, offering durability and resistance to wear in tapered roller applications.
Its precise outer diameter tolerance of +0.001″ to 0 ensures a snug fit, enhancing stability.

The standard cup design simplifies installation, making it compatible with various tapered roller bearings.
With a temperature range of -30° to 110°C, it performs reliably in diverse conditions.

ABEC-1 rating confirms its suitability for applications requiring consistent precision.
The chrome steel construction also resists corrosion, extending its service life.

Application

Industrial Uses of 28921A Bearing
28921A Bearing is commonly used in heavy machinery, such as construction equipment and agricultural gear, where its tapered design handles radial and axial loads efficiently. The chrome steel construction ensures durability in tough working conditions.

What Makes 28921A Bearing a Preferred Choice?
In automotive applications, 28921A Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its inch sizing makes it a go-to for older or imperial-based vehicle models.

Built for Heavy-Duty Use: 28921A Bearing
For industrial conveyor systems, 28921A Bearing’s standard cup design offers easy installation and maintenance. The ABEC-1 rating ensures sufficient precision for most general-purpose applications.

Automotive vs Industrial: Applications of 28921A Bearing
In automotive settings, 28921A Bearing supports high-load components like axles, while in industrial use, it excels in pulley systems. Its compatibility with Timken models adds to its versatility.

Where Is 28921A Bearing Used?
You’ll often find 28921A Bearing in mining equipment, where its robust design handles harsh environments. The temperature range of -30° to 110°C makes it suitable for diverse climates.

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