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31521 Single Cups (Imperial)
31521 Single Cups (Imperial)

31521 Single Cups (Imperial)

The 31521 is a single cup bearing with a 3-inch outer diameter and a width of 0.9375 inches, crafted from durable chrome steel. It fits well with tapered roller bearings and is interchangeable with Timken models.

Its standard design ensures easy installation and reliable performance in temperatures ranging from -30°C to 110°C. The cup’s precise tolerances help maintain stability under load.

This bearing is part of the 31500 series, making it a versatile choice for various industrial applications. It’s compliant with RoHS and REACH standards, ensuring safe and eco-friendly use.

Ideal for machinery requiring tapered roller bearings, such as automotive or heavy equipment, where durability and precision are key. Its robust construction handles demanding conditions with ease.

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Product Parameters

  • Part Number 31521
  • Brand TFL
  • Interchangeable Timken
  • Size 2.60" x 3" x 0.9375"
  • Outer Dia 3"
  • Outer Dia Tolerance +0.001" to 0
  • Cup Width 0.9375"
  • Cup Width Tolerance +0.002" to -0.01
  • Cup Backface ToClear Radius 0.05"
  • Cup Frontface Backing Diameter 2.87"
  • Cup Backface Backing Diameter 2.60"
  • System of Measurement Inch
  • Roller Bearing Type Tapered
  • Type Cups
  • Bearing Part Number 31590-31521 , 31593-31521 , 31594-31521 , 31597-31521
  • Cups Type Standard
  • Series 31500
  • Ring Material Chrome Steel
  • Temperature Range -30° to 110 °C
  • ABEC Rating ABEC-1
  • RoHS Compliant
  • REACH Compliant

Features

How Is 31521 Bearing Engineered for Reliability?

31521 Bearing features chrome steel construction, ensuring durability and resistance to wear.
Its tapered roller design efficiently handles both radial and thrust loads for versatile use.

The precise outer diameter tolerance of +0.001″ to 0 guarantees a secure fit in applications.
With a temperature range of -30° to 110°C, it performs reliably in various environments.

The standard cup type and ABEC-1 rating make it suitable for general industrial use.
Its interchangeable design with Timken bearings offers flexibility in maintenance and replacement.

Application

Industrial Uses of 31521 Bearing
31521 Bearing is commonly used in heavy machinery, such as construction equipment and agricultural tools, where its tapered design handles radial and axial loads efficiently. The chrome steel construction ensures durability in demanding environments.

Where Is 31521 Bearing Used?
You’ll often find 31521 Bearing in automotive applications like wheel hubs and differential systems, thanks to its reliable performance under varying loads. Its inch sizing makes it a popular choice for North American machinery.

Built for Heavy-Duty Use: 31521 Bearing
31521 Bearing excels in industrial gearboxes and conveyor systems, where its standard cup design simplifies installation. The ABEC-1 rating provides a good balance of precision and cost-effectiveness for general machinery.

Automotive vs Industrial: Applications of 31521 Bearing
In automotive settings, 31521 Bearing supports smooth rotation in drivetrains, while in industrial settings, it’s trusted for its load-bearing capacity in pumps and compressors. The temperature range suits most operating conditions.

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