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TS (Single Row Tapered Roller Bearings) (Imperial) 25578-25520

TS (Single Row Tapered Roller Bearings) (Imperial) 25578-25520

The 25578-25520 is a single-row tapered roller bearing with a 1.6875″ bore and 3.265″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 20300 lbf radially and 3020 lbf in thrust, making it versatile for various applications.

Its open design allows easy lubrication, while the steel cage ensures durability under heavy use. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for industrial machinery or automotive systems where combined loads are common.

Weighing 1.3 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for most environments.

The standard radial clearance and ABEC-1 rating ensure consistent performance. Suitable for setups requiring precise alignment and long service life.

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Product Parameters

  • Part Number 25578-25520
  • Brand TFL
  • Interchangeable Timken
  • Size 1.6875" x 3.265" x 0.9375"
  • Bore Dia 1.6875"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.265"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.75"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 0.9375"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.09"
  • Cup Backface ToClear Radius 0.03"
  • Cone Frontface Backing Diameter 1.95"
  • Cone Backface Backing Diameter 2.09"
  • Cup Frontface Backing Diameter 3.05"
  • Cup Backface Backing Diameter 2.91"
  • Cage Cone Frontface Clearance 0.06"
  • Cage Cone Backface Clearance 0.01"
  • Effective Center Location -0.25"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 25578
  • Cup Part Number 25520
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 25500
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 20300 lbf
  • Static Radial Load 24900 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 5270 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 3020 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 1.3 lb

Features

Performance Features of 25578-25520 Bearing

25578-25520 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 20,300 lbf, ensuring reliable performance in various applications.
The steel cage maintains roller alignment, reducing friction and extending service life.
With a temperature range of -30° to 110°C, it performs well in diverse conditions.

How Does 25578-25520 Bearing Reduce Friction?

25578-25520 Bearing’s tapered roller design minimises friction, allowing smooth operation under heavy loads.
The chrome steel construction ensures durability while maintaining efficient performance.
Its standard radial clearance provides balanced operation, reducing wear over time.
This design makes it suitable for applications requiring both radial and thrust load support.

Engineered for Precision: 25578-25520 Bearing

25578-25520 Bearing features precise dimensions, with bore and outer diameter tolerances ensuring accurate fit.
The effective center location of -0.25″ enhances stability in mounted applications.
Its ABEC-1 rating confirms consistent quality for general precision needs.
The bearing’s design promotes reliable operation in industrial and automotive settings.

Steel vs Ceramic Bearings: Strengths of 25578-25520 Bearing

25578-25520 Bearing uses chrome steel for both rings and rollers, providing excellent strength-to-weight ratio.
This material choice offers good wear resistance while remaining cost-effective for most applications.
The steel cage further enhances durability without compromising performance.
With proper lubrication, it delivers long service life in demanding environments.

Application

Industrial Uses of 25578-25520 Bearing
25578-25520 Bearing is commonly used in heavy machinery, such as construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in demanding environments.
In automotive applications, 25578-25520 Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its imperial sizing makes it a straightforward replacement for Timken bearings in many vehicles.
For industrial conveyor systems, 25578-25520 Bearing’s open design allows for easy lubrication, extending service life in continuous operation. The standard radial clearance offers flexibility for different load conditions.

What Makes 25578-25520 Bearing a Preferred Choice?
25578-25520 Bearing stands out in applications requiring precise radial and thrust load management, like gearboxes and power transmission systems. Its steel cage adds robustness while maintaining smooth operation.
The bearing’s ABEC-1 rating ensures consistent performance in general machinery, balancing cost and reliability. Users appreciate its compatibility with Timken parts, simplifying maintenance and replacements.

Built for Heavy-Duty Use: 25578-25520 Bearing
25578-25520 Bearing excels in mining equipment, where its high dynamic radial load capacity handles intense vibrations and shocks. The tapered rollers distribute stress evenly, reducing wear.
In forestry machinery, 25578-25520 Bearing’s temperature resilience (-30° to 110°C) ensures reliability in harsh outdoor conditions. Its standard lubrication requirement keeps maintenance straightforward.

Automotive vs Aerospace: Applications of 25578-25520 Bearing
In automotive settings, 25578-25520 Bearing is ideal for drivetrain components, offering a balance of strength and precision. The inch measurements align with many North American vehicle standards.
For aerospace ground support equipment, 25578-25520 Bearing provides dependable performance in load-handling tools. Its compliance with RoHS and REACH regulations meets environmental standards without compromising durability.

Where Is 25578-25520 Bearing Used?
25578-25520 Bearing frequently appears in pump systems, where its tapered rollers manage axial and radial forces efficiently. The open seal design allows for easy inspection and relubrication.
In material handling equipment, 25578-25520 Bearing’s static radial load capacity ensures stability under heavy weights. Users value its interchangeability with Timken for streamlined inventory management.

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