TS (Single Row Tapered Roller Bearings) (Imperial) 780-772A

The 780-772A is a single-row tapered roller bearing with a 4″ bore and 6.875″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 77800 lbf and is designed for smooth operation in various conditions.

Its open design allows for easy lubrication, while the steel cage ensures durability. The bearing works well in temperatures from -30°C to 110°C, making it versatile for different environments.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for heavy-duty applications like industrial machinery or vehicle axles where combined loads are common.

Weighing 9.9 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for various industries.

The bearing comes with standard radial clearance, but options like C3, C4, or C5 are available for specific needs. Its ABEC-1 rating ensures dependable performance for most applications.

With its tapered roller design, it effectively manages both radial and thrust loads. The precise tolerances and durable materials make it a long-lasting solution for demanding tasks.

Easy to maintain and install, this bearing is a practical choice for engineers and maintenance teams. Its compatibility with Timken parts adds to its convenience and reliability.

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Description

Features

Application

Q&A

Product Parameters

Part Number 780-772A
Brand TFL
Interchangeable Timken
Size 4" x 6.875" x 1.8751"
Bore Dia 4"
Bore Dia Tolerance +0.001" to 0
Outer Dia 6.875"
Outer Dia Tolerance +0.001" to 0
Cone Width 1.89"
Cone Width Tolerance +0.003" to -0.01
Cup Width 1.5"
Cup Width Tolerance +0.002" to -0.01
Width 1.8751"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.14"
Cup Backface ToClear Radius 0.130"
Cone Frontface Backing Diameter 5.24"
Cone Backface Backing Diameter 4.69"
Cup Frontface Backing Diameter 6.61"
Cup Backface Backing Diameter 6.22"
Cage Cone Frontface Clearance 0.07"
Cage Cone Backface Clearance 0.13"
Effective Center Location -0.32"
System of Measurement Inch
Type Bearing
Cone Part Number 780
Cup Part Number 772A
Bearing Type Roller
Roller Bearing Type Tapered
For Load Direction Combined
Construction Single Row
Seal Type Open
Cups Type Standard
Series 775
Ring Material Chrome Steel
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Load 77800 lbf
Static Radial Load 111000 lbf
Dynamic Radial Rating(90 Million Revolutions)(C90) 20200 lbf
Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 13300 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 9.9 lb

Features

Performance Features of 780-772A Bearing

780-772A Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 77,800 lbf, ensuring reliable performance in heavy-duty applications.
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 environmental conditions.

How Is 780-772A Bearing Engineered for Reliability?

780-772A Bearing features precise cone and cup width tolerances, ensuring consistent performance under stress.
The tapered roller design efficiently handles both radial and thrust loads, making it versatile for different applications.
Its chrome steel construction resists wear, providing long-lasting durability.
The standard radial clearance options allow for flexibility in installation and use.

Designed for Durability: 780-772A Bearing

780-772A Bearing’s single-row construction simplifies installation while maintaining high load capacity.
The open seal type allows for easy lubrication, ensuring smooth operation over time.
With an ABEC-1 rating, it balances precision and cost-effectiveness.
The bearing’s effective center location enhances stability during operation.

Steel vs Ceramic Bearings: Strengths of 780-772A Bearing

780-772A Bearing uses chrome steel for both rings and rollers, offering excellent strength and wear resistance.
Its dynamic thrust rating of 13,300 lbf makes it suitable for applications requiring combined load handling.
The steel cage provides reliable roller guidance, reducing maintenance needs.
This bearing is RoHS and REACH compliant, meeting international environmental standards.

Application

Industrial Uses of 780-772A Bearing
780-772A Bearing is commonly used in heavy machinery like construction equipment and mining gear, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in tough working conditions.

In automotive applications, 780-772A Bearing fits well in truck wheel hubs and differential systems, providing reliable performance under high radial and thrust loads. Its imperial sizing makes it a go-to choice for North American vehicle manufacturers.

For industrial conveyor systems, 780-772A Bearing’s open design allows for easy lubrication, extending its service life in continuous operation. The steel cage adds stability, making it suitable for high-speed environments.

Where Is 780-772A Bearing Used?
You’ll often find 780-772A Bearing in agricultural machinery, such as tractors and harvesters, where its robust design withstands heavy loads and rough terrain. The ABEC-1 rating ensures consistent performance without over-engineering.

In wind turbine systems, 780-772A Bearing supports the main shaft, handling both radial and axial forces. Its temperature range of -30° to 110°C makes it adaptable to varying weather conditions.

Built for Heavy-Duty Use: 780-772A Bearing
780-772A Bearing excels in railway applications, particularly in axle boxes where its tapered rollers manage dynamic loads efficiently. The standard radial clearance option offers flexibility for different installation needs.

For pulp and paper processing equipment, 780-772A Bearing’s steel cage and chrome steel rollers resist wear in high-moisture environments. Its compatibility with Timken models simplifies replacements and maintenance.

Automotive vs Aerospace: Applications of 780-772A Bearing
In automotive settings, 780-772A Bearing is ideal for heavy-duty trucks and off-road vehicles, thanks to its high static radial load capacity. The inch measurements align with standard US manufacturing specs.

While not typically used in aerospace, 780-772A Bearing finds its place in ground support equipment like cargo loaders. Its balance of strength and precision meets the demands of frequent, heavy use.