TS (Single Row Tapered Roller Bearings) (Imperial) 78255X-78537

The 78255X-78537 is a single-row tapered roller bearing with a 2.56″ bore and 5.38″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 45600 lbf radially and 17500 lbf thrust, making it versatile for heavy-duty use.

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

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for applications like truck axles or heavy machinery where robust performance is needed.

Weighing 4.9 lb, it’s built to last with standard radial clearance options. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Description

Features

Application

Q&A

Product Parameters

Part Number 78255X-78537
Brand TFL
Interchangeable Timken
Size 2.5586" x 5.375" x 1.4375"
Bore Dia 2.5586"
Bore Dia Tolerance +0.005" to 0
Outer Dia 5.375"
Outer Dia Tolerance +0.001" to 0
Cone Width 1.2962"
Cone Width Tolerance +0.003" to -0.01
Cup Width 0.926"
Cup Width Tolerance +0.002" to -0.01
Width 1.4375"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.14"
Cup Backface ToClear Radius 0.130"
Cone Frontface Backing Diameter 3.78"
Cone Backface Backing Diameter 3.5"
Cup Frontface Backing Diameter 5.16"
Cup Backface Backing Diameter 4.53"
Cage Cone Frontface Clearance 0.22"
Cage Cone Backface Clearance 0.24"
Effective Center Location 0.31"
System of Measurement Inch
Type Bearing
Cone Part Number 78255X
Cup Part Number 78537
Bearing Type Roller
Roller Bearing Type Tapered
For Load Direction Combined
Construction Single Row
Seal Type Open
Cups Type Standard
Series 78000
Ring Material Chrome Steel
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Load 45600 lbf
Static Radial Load 43400 lbf
Dynamic Radial Rating(90 Million Revolutions)(C90) 11800 lbf
Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 17500 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 4.900 lb

Features

Performance Features of 78255X-78537 Bearing

78255X-78537 Bearing is crafted with chrome steel rings and rollers, offering robust resistance to combined loads.
Its dynamic radial load capacity reaches 45,600 lbf, ensuring reliable operation in demanding conditions.
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 various environments.

Why Choose 78255X-78537 Bearing for Precision Tasks?

78255X-78537 Bearing features precise cone and cup dimensions, ensuring accurate alignment for combined load applications.
The tapered roller design distributes loads evenly, enhancing stability and reducing wear.
Its standard radial clearance allows for smooth operation in diverse settings.
The bearing’s ABEC-1 rating ensures consistent performance for precision tasks.

Engineered for Durability: 78255X-78537 Bearing

78255X-78537 Bearing’s chrome steel construction provides excellent resistance to wear and fatigue.
The single-row design simplifies installation while maintaining high load capacity.
With a static radial load rating of 43,400 lbf, it handles heavy-duty applications with ease.
The bearing’s effective center location ensures optimal load distribution for long-lasting performance.

Application

Industrial Uses of 78255X-78537 Bearing
78255X-78537 Bearing is commonly used in heavy machinery, such as construction equipment and mining tools, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability in tough working conditions.

Where Is 78255X-78537 Bearing Used?
In automotive applications, 78255X-78537 Bearing supports wheel hubs and drivetrains, providing reliable performance under high stress. Its inch sizing makes it compatible with many North American vehicle models.

Built for Heavy-Duty Use: 78255X-78537 Bearing
78255X-78537 Bearing excels in industrial gearboxes, where its single-row design simplifies installation and maintenance. The steel cage adds strength, making it suitable for long-term use.

Automotive vs Aerospace: Applications of 78255X-78537 Bearing
78255X-78537 Bearing is versatile enough for both automotive drivetrains and aerospace landing gear systems. Its dynamic load capacity ensures smooth operation in high-stress environments.

Key Fields for 78255X-78537 Bearing
78255X-78537 Bearing is ideal for agricultural machinery, such as tractors and harvesters, where its robust design handles dirt and debris. The open seal type allows for easy lubrication.