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25821 Single Cups (Imperial)
25821 Single Cups (Imperial)

25821 Single Cups (Imperial)

The 25821 is a single cup bearing with dimensions of 2.56″ x 2.875″ x 0.75″, made from sturdy chrome steel for long-lasting performance. It fits well with tapered roller bearings and is interchangeable with Timken models, making it a versatile choice.

Its standard cup design ensures easy installation and reliable operation in temperatures ranging from -30°C to 110°C. The ABEC-1 rating provides a good balance of precision and durability for most industrial uses.

This cup is part of the 25800 series and works seamlessly with bearings like 25877 and 25880. Ideal for machinery where tapered roller bearings are needed, such as automotive or heavy equipment applications.

Compliant with RoHS and REACH standards, it’s a safe and dependable option for various engineering needs. The precise tolerances ensure a snug fit and smooth performance.

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Product Parameters

  • Part Number 25821
  • Brand TFL
  • Interchangeable Timken
  • Size 2.56" x 2.875" x 0.75"
  • Outer Dia 2.875"
  • Outer Dia Tolerance +0.001" to 0
  • Cup Width 0.75"
  • Cup Width Tolerance +0.002" to -0.01
  • Cup Backface ToClear Radius 0.03"
  • Cup Frontface Backing Diameter 2.72"
  • Cup Backface Backing Diameter 2.56"
  • System of Measurement Inch
  • Roller Bearing Type Tapered
  • Type Cups
  • Bearing Part Number 25877-25821 , 25877A-25821 , 25878-25821 , 25880-25821
  • Cups Type Standard
  • Series 25800
  • Ring Material Chrome Steel
  • Temperature Range -30° to 110 °C
  • ABEC Rating ABEC-1
  • RoHS Compliant
  • REACH Compliant

Features

How Is 25821 Bearing Engineered for Reliability?

25821 Bearing is crafted from chrome steel, offering durability and resistance to wear in various applications.
Its tapered roller design ensures efficient load distribution, enhancing performance under stress.

The cup width tolerance of +0.002″ to -0.01″ allows for precise fitting, reducing installation errors.
With a temperature range of -30° to 110°C, it performs reliably in diverse environmental conditions.

25821 Bearing meets ABEC-1 standards, ensuring consistent quality and smooth operation.
Its interchangeable design with Timken models provides flexibility and ease of replacement.

Application

Common Applications of 25821 Bearing
25821 Bearing is widely used in industrial machinery, especially in conveyor systems and heavy-duty gearboxes, where its tapered design handles radial and axial loads efficiently. The chrome steel construction ensures durability in demanding environments.

In automotive applications, 25821 Bearing fits well in wheel hubs and differential systems, providing reliable performance under constant stress. Its inch sizing makes it compatible with many North American vehicle models.

For agricultural equipment, 25821 Bearing’s robust design supports machinery like tractors and harvesters, where it withstands rough conditions. The standard cup type simplifies installation and maintenance.

Where Is 25821 Bearing Used?
25821 Bearing is a common choice in construction equipment, such as bulldozers and cranes, due to its ability to handle heavy loads. The tapered rollers ensure smooth operation even under uneven stress.

In mining machinery, 25821 Bearing’s durability shines in crushers and drills, where it endures harsh conditions. The ABEC-1 rating balances precision and cost-effectiveness for these applications.

Built for Heavy-Duty Use: 25821 Bearing
25821 Bearing excels in forestry equipment like log splitters and sawmills, where its strength and reliability are crucial. The chrome steel rings resist wear from constant friction.

For railway applications, 25821 Bearing supports axle boxes and bogies, ensuring stable performance over long distances. Its temperature range suits both cold and moderate climates.

Automotive vs Industrial: Applications of 25821 Bearing
In automotive settings, 25821 Bearing is ideal for transmissions and drivetrains, offering smooth power transfer. Its inch measurements align with standard US automotive parts.

In industrial contexts, 25821 Bearing is favoured for pumps and compressors, where its tapered rollers manage varying loads. The easy interchangeability with Timken models adds to its practicality.

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