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TS (Single Row Tapered Roller Bearings) (Imperial) 778-772A

TS (Single Row Tapered Roller Bearings) (Imperial) 778-772A

The 778-772A is a single-row tapered roller bearing with a 3.625″ bore and 6.875″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 77800 lbf radially and 13300 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 11.1 lb, it’s built to last with standard radial clearance and ABEC-1 precision. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number 778-772A
  • Brand TFL
  • Interchangeable Timken
  • Size 3.625" x 6.875" x 1.8751"
  • Bore Dia 3.625"
  • 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 4.8"
  • Cone Backface Backing Diameter 4.37"
  • 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 778
  • 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 11.1 lb

Features

Performance Features of 778-772A Bearing

778-772A Bearing is constructed 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 roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs well in various environmental conditions.

778-772A Bearing requires lubrication, but its durable design minimises maintenance needs.
The standard radial clearance option provides flexibility for different installation requirements.

Application

Industrial Uses of 778-772A Bearing
778-772A Bearing is commonly used in heavy machinery like construction equipment and mining tools, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability in tough working conditions.

In automotive applications, 778-772A 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 preferred choice for North American vehicle models.

For industrial gearboxes, 778-772A Bearing’s single-row design offers precise alignment and smooth operation. The steel cage adds strength, making it suitable for high-speed scenarios.

Where Is 778-772A Bearing Used?
778-772A Bearing finds its place in agricultural machinery, such as tractors and harvesters, where its robust design withstands heavy loads and rough terrain. The open seal allows for easy lubrication maintenance.

In conveyor systems, 778-772A Bearing ensures smooth movement of heavy materials, thanks to its high dynamic radial load capacity. The standard radial clearance makes it versatile for various industrial settings.

Built for Heavy-Duty Use: 778-772A Bearing
778-772A Bearing is ideal for wind turbine applications, where its tapered rollers manage both radial and axial forces efficiently. The ABEC-1 rating ensures consistent performance in demanding environments.

For railway applications, 778-772A Bearing supports axle loads, providing stability and reducing wear over time. Its temperature range of -30° to 110°C makes it adaptable to different climates.

Automotive vs Aerospace: Applications of 778-772A Bearing
In automotive systems, 778-772A Bearing is often used in heavy-duty trucks and buses, where its load capacity and durability are key. The inch sizing aligns with standard North American specifications.

For aerospace ground equipment, 778-772A Bearing handles the rigorous demands of aircraft servicing tools. Its chrome steel rollers and steel cage ensure reliability in high-stress scenarios.

Q&A

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