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TS (Single Row Tapered Roller Bearings) (Imperial) 777-773

TS (Single Row Tapered Roller Bearings) (Imperial) 777-773

The 777-773 is a single-row tapered roller bearing with a 3.75″ bore and 7.0866″ 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 for easy lubrication, while the steel cage ensures durability under high stress. 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, automotive applications, or any setting requiring robust load support.

Weighing 11.6 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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Product Parameters

  • Part Number 777-773
  • Brand TFL
  • Interchangeable Timken
  • Size 3.75" x 7.0866" x 1.8898"
  • Bore Dia 3.75"
  • Bore Dia Tolerance +0.001" to 0
  • Outer Dia 7.0866"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.89"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 1.5748"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.8898"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.380"
  • Cup Backface ToClear Radius 0.12"
  • Cone Frontface Backing Diameter 4.92"
  • Cone Backface Backing Diameter 4.96"
  • Cup Frontface Backing Diameter 6.65"
  • Cup Backface Backing Diameter 6.3"
  • 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 777
  • Cup Part Number 773
  • 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 11.6 lb

Features

Performance Features of 777-773 Bearing

777-773 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 Does 777-773 Bearing Reduce Friction?

777-773 Bearing’s tapered roller design minimises friction, allowing smooth operation under combined loads.
The chrome steel construction ensures durability while maintaining efficient performance.
Its standard radial clearance options provide flexibility for different application needs.
This design also helps in distributing loads evenly, reducing wear over time.

Engineered for Precision: 777-773 Bearing

777-773 Bearing features precise dimensions with tight tolerances, ensuring accurate performance.
The single row construction simplifies installation while maintaining high load capacity.
Its ABEC-1 rating confirms consistent quality for general precision applications.
The bearing’s effective centre location is optimised for stability during operation.

Steel vs Ceramic Bearings: Strengths of 777-773 Bearing

777-773 Bearing uses chrome steel for both rings and rollers, offering excellent strength-to-weight ratio.
This material choice provides good wear resistance while keeping costs reasonable.
The steel cage complements this design by providing reliable roller guidance.
At 11.6 lb, it maintains a balance between durability and manageable weight.

Application

Industrial Uses of 777-773 Bearing
The 777-773 Bearing is commonly used in heavy machinery like construction equipment and mining gear, where its tapered roller design handles combined radial and thrust loads efficiently. Its chrome steel construction ensures durability even in tough working conditions.

In automotive applications, 777-773 Bearing fits well in truck wheel hubs and drivetrains, providing reliable performance under heavy loads. The inch sizing makes it a straightforward replacement for Timken equivalents in many vehicles.

For industrial fans and pumps, 777-773 Bearing’s open design allows for easy lubrication, extending service life in high-speed operations. The steel cage adds stability, reducing wear over time.

Where Is 777-773 Bearing Used?
You’ll often find 777-773 Bearing in agricultural machinery, such as tractors and harvesters, where its robust design handles uneven loads. The standard radial clearance ensures smooth operation in varying temperatures.

In conveyor systems, 777-773 Bearing supports heavy rollers, thanks to its high dynamic radial load capacity. The ABEC-1 rating balances precision and cost-effectiveness for industrial use.

Built for Heavy-Duty Use: 777-773 Bearing
The 777-773 Bearing excels in forestry equipment like log splitters, where its tapered rollers manage intense shock loads. Its inch dimensions simplify maintenance in North American machinery.

For gearboxes in industrial mixers, 777-773 Bearing’s combined load capability keeps operations running smoothly. The chrome steel rollers resist wear, even with frequent starts and stops.

Automotive vs Aerospace: Applications of 777-773 Bearing
In automotive settings, 777-773 Bearing is ideal for axle systems, offering reliable performance under constant stress. Its compatibility with Timken parts makes it a versatile choice for repairs.

While less common in aerospace, 777-773 Bearing can be found in ground support equipment, where its strength and temperature range meet operational demands. The steel cage ensures stability during prolonged use.

Q&A

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