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TS (Single Row Tapered Roller Bearings) (Imperial) 25581-25520

TS (Single Row Tapered Roller Bearings) (Imperial) 25581-25520

The 25581-25520 is a single-row tapered roller bearing with a 1.75″ bore and 3.265″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 20300 lbf radially and 3020 lbf thrust, making it versatile for various applications.

Its open design requires regular 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 1.2 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and eco-friendly use.

The standard radial clearance (also available in C3/C4/C5) provides flexibility for different setups. Its ABEC-1 rating ensures dependable performance for general applications.

Perfect for scenarios requiring a balance of radial and thrust load capacity, such as gearboxes or wheel hubs. Easy to maintain with regular greasing, it’s a practical choice for long-term use.

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Product Parameters

  • Part Number 25581-25520
  • Brand TFL
  • Interchangeable Timken
  • Size 1.75" x 3.265" x 0.9375"
  • Bore Dia 1.75"
  • 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 0.02"
  • Cup Backface ToClear Radius 0.03"
  • Cone Frontface Backing Diameter 1.97"
  • Cone Backface Backing Diameter 2.01"
  • 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 25581
  • 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 1.2 lb

Features

How Is 25581-25520 Bearing Engineered for Reliability?

25581-25520 Bearing features chrome steel rings and rollers, providing strong resistance to combined loads.
Its dynamic radial load capacity reaches 20,300 lbf, ensuring reliable performance in demanding applications.
The steel cage keeps the rollers aligned, reducing wear and extending service life.
With a temperature range of -30° to 110°C, it performs well in various conditions.

What Makes 25581-25520 Bearing Suitable for High-Temperature Applications?

25581-25520 Bearing withstands temperatures up to 110°C, maintaining performance in challenging environments.
Its chrome steel construction ensures durability and resistance to wear under high loads.
The open design allows for easy lubrication, keeping operations smooth.
With a standard radial clearance, it offers flexibility for different applications.

Designed for Durability: 25581-25520 Bearing

25581-25520 Bearing is built with chrome steel components, ensuring long-lasting performance.
Its tapered roller design handles both radial and thrust loads efficiently.
The steel cage provides stability, reducing friction and noise.
With an ABEC-1 rating, it balances precision and cost-effectiveness.

Steel vs Ceramic Bearings: Strengths of 25581-25520 Bearing

25581-25520 Bearing uses chrome steel for both rings and rollers, offering excellent strength.
Its dynamic thrust rating of 3,020 lbf ensures reliable operation under heavy loads.
The standard radial clearance allows for easy installation and maintenance.
With a weight of 1.2 lb, it provides a good balance of durability and portability.

Application

Industrial Uses of 25581-25520 Bearing
25581-25520 Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. The inch sizing makes it a straightforward fit for North American industrial standards.

In automotive applications, 25581-25520 Bearing works well in wheel hubs and differential systems, thanks to its robust chrome steel construction. Its open design simplifies lubrication, which is handy for maintenance in tough conditions.

For conveyor systems, 25581-25520 Bearing’s ability to manage radial and thrust loads ensures smooth operation over long periods. The steel cage adds durability, making it reliable for continuous use in factories or warehouses.

Where Is 25581-25520 Bearing Used?
You’ll often find 25581-25520 Bearing in mining equipment, where its high dynamic radial load capacity stands up to demanding environments. The standard radial clearance offers flexibility for various operational needs.

In power transmission systems, 25581-25520 Bearing supports shafts and gears with consistent performance. Its compatibility with Timken designs makes it a versatile choice for repairs or upgrades.

Built for Heavy-Duty Use: 25581-25520 Bearing
25581-25520 Bearing excels in forestry machinery, handling rough terrain and heavy loads without compromising stability. The tapered rollers distribute stress evenly, extending service life.

For industrial pumps, 25581-25520 Bearing’s temperature tolerance and lubrication requirements make it suitable for both high and low-speed operations. Its steel components resist wear, even in wet or dusty conditions.

Light-Duty vs Heavy-Duty: Best Uses for 25581-25520 Bearing
In light-duty scenarios like small gearboxes, 25581-25520 Bearing provides reliable support without over-engineering. Its ABEC-1 rating balances precision and cost-effectiveness for general machinery.

For heavy-duty tasks like crane rotations, 25581-25520 Bearing’s static radial load capacity ensures safety under extreme weights. The inch measurements simplify replacements in older equipment.

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