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TS (Single Row Tapered Roller Bearings) (Imperial) 777-772A

TS (Single Row Tapered Roller Bearings) (Imperial) 777-772A

The 777-772A is a single row tapered roller bearing with a 3.75″ bore and 6.875″ outer diameter, crafted from robust chrome steel. It handles combined loads up to 77800 lbf radially and 13300 lbf thrust, making it suitable for demanding applications.

Its open design and steel cage ensure durability, while the tapered rollers provide smooth operation under heavy loads. The bearing operates efficiently 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, gearboxes, or heavy equipment where combined loads are common.

Weighing 10.5 lb, it’s built to last while meeting RoHS and REACH standards for safety and environmental compliance.

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Product Parameters

  • Part Number 777-772A
  • Brand TFL
  • Interchangeable Timken
  • Size 3.75" x 6.875" x 1.8751"
  • Bore Dia 3.75"
  • 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 0.380"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 4.92"
  • Cone Backface Backing Diameter 4.96"
  • 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 777
  • 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 10.5 lb

Features

Performance Features of 777-772A Bearing

777-772A 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 single-row tapered roller design of 777-772A Bearing provides effective load distribution, reducing wear.
With a static radial load capacity of 111,000 lbf, it handles demanding conditions with ease.

777-772A Bearing operates efficiently within a temperature range of -30° to 110°C.
Its steel cage maintains roller alignment, enhancing durability and service life.

The standard radial clearance of 777-772A Bearing ensures smooth operation.
Its ABEC-1 rating guarantees consistent performance for various industrial applications.

777-772A Bearing requires regular lubrication for optimal performance.
Its open design simplifies maintenance, reducing downtime and operational costs.

Application

Industrial Uses of 777-772A Bearing
777-772A Bearing is commonly used in heavy machinery like construction equipment and mining gear, where its tapered roller design handles combined loads efficiently.
The inch sizing makes it a straightforward replacement for Timken bearings in North American industrial applications.

What Makes 777-772A Bearing a Preferred Choice?
In automotive axles and wheel hubs, 777-772A Bearing offers reliable performance due to its chrome steel construction and standard radial clearance.
Its open design simplifies lubrication, which is essential for maintaining longevity in high-mileage vehicles.

Built for Heavy-Duty Use: 777-772A Bearing
777-772A Bearing excels in agricultural machinery, such as tractors and harvesters, where its dynamic radial load capacity withstands rough terrain.
The steel cage ensures durability even in dusty or humid environments common in farming operations.

Automotive vs Aerospace: Applications of 777-772A Bearing
While 777-772A Bearing is popular in truck transmissions, its ABEC-1 rating also suits less precision-critical aerospace components like landing gear mechanisms.
The temperature range (-30° to 110°C) covers most ground and low-altitude aviation needs.

Where Is 777-772A Bearing Used?
You’ll find 777-772A Bearing in conveyor systems at ports, where its 111,000 lbf static load rating handles heavy cargo containers.
The inch dimensions align perfectly with legacy material handling equipment still common in global shipping hubs.

Q&A

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