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TS (Single Row Tapered Roller Bearings) (Imperial) 25578-25547RB

TS (Single Row Tapered Roller Bearings) (Imperial) 25578-25547RB

The 25578-25547RB is a single-row tapered roller bearing with a 1.6875″ bore and 3.9368″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 20300 lbf radially and 3020 lbf thrust, suitable for demanding 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, making it a practical choice for replacements. Ideal for use in gearboxes, axles, or industrial machinery where combined loads are present.

Weighing 2.3 lb, it offers a balance of strength and manageability. Compliant with RoHS and REACH standards for safe and reliable performance.

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Product Parameters

  • Part Number 25578-25547RB
  • Brand TFL
  • Interchangeable Timken
  • Size 1.6875" x 3.9368" x 1.0001"
  • Bore Dia 1.6875"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.9368"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.8125"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.0001"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.09"
  • Cup Backface ToClear Radius 0.02"
  • Cone Frontface Backing Diameter 1.95"
  • Cone Backface Backing Diameter 2.09"
  • Cup Frontface Backing Diameter 3.85"
  • Cup Backface Backing Diameter 3.19"
  • 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 25547RB
  • 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 2.3 lb

Features

Performance Features of 25578-25547RB Bearing

25578-25547RB 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 demanding conditions.
The steel cage maintains proper roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs well in various environments.

Why Choose 25578-25547RB Bearing for Precision Tasks?

25578-25547RB Bearing features precise tolerances, with bore diameter accuracy within +0.005″ to 0.
Its tapered roller design ensures smooth operation under both radial and thrust loads.
The standard radial clearance option provides flexibility for different applications.
This bearing is interchangeable with Timken models, offering easy replacement options.

Designed for Durability: 25578-25547RB Bearing

25578-25547RB Bearing’s chrome steel construction resists wear, even under heavy loads.
The single-row design simplifies installation while maintaining high load capacity.
With a static radial load rating of 24,900 lbf, it handles demanding industrial applications.
Proper lubrication ensures long service life and consistent performance.

Application

Industrial Uses of 25578-25547RB Bearing
25578-25547RB 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 in tough working conditions.

In automotive applications, 25578-25547RB Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its imperial sizing makes it a convenient choice for North American vehicle models.

For industrial conveyor systems, 25578-25547RB Bearing’s open design allows for easy lubrication, extending its service life in high-load scenarios. The steel cage adds extra strength, making it suitable for continuous operation.

Where Is 25578-25547RB Bearing Used?
You’ll often find 25578-25547RB Bearing in mining equipment, where its ability to handle radial and thrust loads is crucial. The standard radial clearance ensures smooth operation even under heavy stress.

In railway applications, 25578-25547RB Bearing supports axle boxes, offering stability and reducing wear over time. The ABEC-1 rating provides a good balance of precision and cost-effectiveness for these uses.

Built for Heavy-Duty Use: 25578-25547RB Bearing
25578-25547RB Bearing excels in forestry machinery, where its robust design withstands shocks and vibrations. The tapered rollers distribute loads evenly, enhancing longevity.

For pump systems, 25578-25547RB Bearing’s temperature range (-30° to 110°C) ensures reliable performance in both hot and cold environments. The steel cage further boosts its resistance to wear.

Automotive vs Aerospace: Applications of 25578-25547RB Bearing
In automotive drivetrains, 25578-25547RB Bearing handles high torque and variable speeds efficiently. Its compatibility with Timken models makes it a versatile option for repairs.

For aerospace ground equipment, 25578-25547RB Bearing’s precision and load capacity are valuable, though it’s typically reserved for less critical applications due to its ABEC-1 rating.

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