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25581-25520D TDO (Two-Row Double-Outer Race) (Imperial)

25581-25520D TDO (Two-Row Double-Outer Race) (Imperial)

The 25581-25520D is a double-row tapered roller bearing with a 1.75″ bore and 3.265″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 35400 lbf and is designed for long-lasting performance in demanding conditions.

Its open design allows for easy lubrication, while the steel cage ensures smooth operation. The bearing works well in temperatures ranging from -30°C to 110°C, making it versatile for various environments.

This model is part of the 25500 series and comes with standard cups for straightforward installation. Ideal for heavy-duty applications like truck axles or industrial gearboxes where combined loads are common.

Weighing 2.85 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a reliable choice for replacements or new installations.

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Product Parameters

  • Part Number 25581-25520D
  • Brand TFL
  • Size 1.75" x 3.265" x 1"
  • Bore Dia 1.75"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.265"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 1.875"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 1"
  • Cone Width Tolerance +0.002" to -0.01
  • Bearing Width Across Cups 2.25"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.03"
  • Cone Backface Backing Diameter 2.01"
  • Cup Frontface Backing Diameter 3.05"
  • Cage Cone Backface Clearance 0.01"
  • Dynamic Radial Load 35400 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 25581
  • Cup Part Number 25520D
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 25500
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 5270 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 3020 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 9180 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 2.85 lb

Features

Performance Features of 25581-25520D Bearing

25581-25520D Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 35,400 lbf, ensuring reliable performance in heavy-duty applications.

The double-row tapered roller design distributes loads evenly, enhancing durability and reducing wear.
With a standard radial clearance, it provides smooth operation across various conditions.

25581-25520D Bearing operates efficiently within a temperature range of -30° to 110°C.
Its steel cage maintains roller alignment, contributing to extended service life.

The open seal design allows for easy lubrication, ensuring consistent performance.
This bearing is ideal for applications requiring both radial and thrust load support.

Application

Industrial Uses of 25581-25520D Bearing
The 25581-25520D Bearing is commonly used in heavy machinery, such as construction equipment and mining tools, where its double-row design handles combined radial and thrust loads efficiently. Its chrome steel construction ensures durability in demanding environments.

What Makes 25581-25520D Bearing a Preferred Choice?
In automotive applications, 25581-25520D Bearing is ideal for wheel hubs and differential systems, thanks to its robust tapered roller design. The inch sizing makes it a practical fit for many North American vehicle models.

Built for Heavy-Duty Use: 25581-25520D Bearing
For industrial conveyor systems, 25581-25520D Bearing offers reliable performance under continuous operation. Its open seal type allows for easy lubrication, extending service life in high-load scenarios.

Automotive vs Aerospace: Applications of 25581-25520D Bearing
While 25581-25520D Bearing is widely used in truck axles, its precision also suits aerospace landing gear components. The standard radial clearance ensures smooth operation in both sectors.

Where Is 25581-25520D Bearing Used?
In agricultural machinery, 25581-25520D Bearing supports heavy loads in tractors and harvesters. Its steel cage provides stability, even in dusty or high-vibration conditions.

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