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25578-25520DC TDO (Two-Row Double-Outer Race) (Imperial)

25578-25520DC TDO (Two-Row Double-Outer Race) (Imperial)

The 25578-25520DC is a double-row tapered roller bearing with a 1.6875″ bore and 3.265″ outer diameter, built from sturdy chrome steel. It handles combined loads well, with a dynamic radial load capacity of 35400 lbf.

Its open design allows for easy lubrication, while the steel cage ensures durability. The bearing operates smoothly in temperatures from -30°C to 110°C, making it versatile for various conditions.

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

Weighing 2.93 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 25578-25520DC
  • Brand TFL
  • Size 1.6875" x 3.265" x 1"
  • Bore Dia 1.6875"
  • 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 2.09"
  • 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 25578
  • Cup Part Number 25520DC
  • 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 2.930 lb

Features

Performance Features of 25578-25520DC Bearing

25578-25520DC 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 enhances stability and load distribution.
This construction allows 25578-25520DC Bearing to handle both radial and thrust forces effectively.

With a standard radial clearance, it suits various industrial applications.
The open seal type simplifies lubrication and maintenance procedures.

25578-25520DC Bearing operates within a temperature range of -30° to 110°C.
Its robust steel cage maintains roller alignment, extending service life.

Application

Industrial Uses of 25578-25520DC Bearing
25578-25520DC 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 effectively. The chrome steel construction ensures durability in demanding environments.

In automotive applications, 25578-25520DC Bearing supports wheel hubs and drivetrain components, providing reliable performance under high stress. Its inch sizing makes it compatible with many North American vehicle models.

For industrial automation, 25578-25520DC Bearing is ideal for conveyor systems and robotic arms, where precision and load capacity are key. The open seal design allows for easy lubrication and maintenance.

What Makes 25578-25520DC Bearing a Preferred Choice?
25578-25520DC Bearing stands out in agricultural machinery, like tractors and harvesters, due to its robust tapered roller design. The standard radial clearance ensures smooth operation even under varying loads.

In material handling equipment, 25578-25520DC Bearing excels in forklifts and cranes, where its high dynamic radial load rating is essential. The steel cage adds extra strength for long-term use.

Built for Heavy-Duty Use: 25578-25520DC Bearing
25578-25520DC Bearing is a reliable choice for railway applications, such as axle boxes, where its combined load capacity is crucial. The ABEC-1 rating balances precision and cost-effectiveness.

For power transmission systems, 25578-25520DC Bearing handles high-speed rotations in gearboxes and pulleys. Its temperature range of -30° to 110°C ensures performance in diverse climates.

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