TS (Single Row Tapered Roller Bearings) (Imperial) 25581-25521

The 25581-25521 is a single-row tapered roller bearing with a 1.75″ bore and 3.27″ 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 from -30°C to 110°C, suitable for demanding environments.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for machinery like gearboxes or wheel hubs where combined loads are common.

Weighing just 1.2 lb, it’s lightweight yet robust. Compliant with RoHS and REACH standards for safe and eco-friendly use.

The tapered roller design provides effective load distribution, enhancing longevity. Its standard radial clearance ensures easy installation and reliable performance.

Perfect for industrial equipment or automotive applications, this bearing balances strength and precision. The ABEC-1 rating confirms its consistent quality for general-purpose use.

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Description

Features

Application

Q&A

Product Parameters

Part Number 25581-25521
Brand TFL
Interchangeable Timken
Size 1.75" x 3.27" x 0.9375"
Bore Dia 1.75"
Bore Dia Tolerance +0.005" to 0
Outer Dia 3.27"
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 0.130"
Cone Frontface Backing Diameter 1.97"
Cone Backface Backing Diameter 2.01"
Cup Frontface Backing Diameter 3.05"
Cup Backface Backing Diameter 2.83"
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 25521
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

Performance Features of 25581-25521 Bearing

25581-25521 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 20,300 lbf, making it suitable for heavy-duty applications.

The steel cage ensures proper roller alignment, reducing friction and wear.
With a standard radial clearance, it provides reliable performance in various conditions.

25581-25521 Bearing operates within a temperature range of -30° to 110°C, ensuring versatility.
Its tapered roller design efficiently handles both radial and thrust loads.

The bearing requires lubrication to maintain smooth operation and extend service life.
Its ABEC-1 rating ensures consistent performance for general industrial use.

Application

Industrial Uses of 25581-25521 Bearing
25581-25521 Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in tough working conditions.

In automotive applications, 25581-25521 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, 25581-25521 Bearing’s open design allows for easy lubrication, extending service life in high-use environments. The steel cage adds stability, making it suitable for continuous operation.

What Makes 25581-25521 Bearing a Preferred Choice?
25581-25521 Bearing stands out in applications requiring precise radial and thrust load management, such as gearboxes and pumps. Its standard radial clearance offers flexibility for different operational needs.

The bearing’s compatibility with Timken models simplifies maintenance in existing setups. With a temperature range of -30° to 110°C, it performs reliably in both hot and cold environments.

Built for Heavy-Duty Use: 25581-25521 Bearing
25581-25521 Bearing excels in mining equipment, where its robust design withstands extreme loads and vibrations. The tapered rollers distribute stress evenly, reducing wear over time.

In forestry machinery, this bearing’s steel cage and chrome steel components resist corrosion and abrasion. Its ABEC-1 rating ensures consistent performance without unnecessary precision overhead.

Automotive vs Aerospace: Applications of 25581-25521 Bearing
In automotive systems, 25581-25521 Bearing is often found in drivetrains, offering a balance of strength and ease of maintenance. Its imperial measurements align with many North American vehicle standards.

For aerospace ground support equipment, this bearing provides reliable performance without the need for high-precision alternatives. Its weight and load capacity make it practical for heavy-duty ground applications.