TS (Single Row Tapered Roller Bearings) (Imperial) 677-674

The 677-674 is a single-row tapered roller bearing with a 3.375″ bore and 6.75″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 59500 lbf radially and 12400 lbf thrust, making it a robust choice for heavy-duty applications.

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 use in industrial machinery, gearboxes, or automotive systems where combined loads are common.

Weighing 9.5 lb, it’s a solid performer 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 677-674
Brand TFL
Interchangeable Timken
Size 3.375" x 6.75" x 1.625"
Bore Dia 3.375"
Bore Dia Tolerance +0.001" to 0
Outer Dia 6.75"
Outer Dia Tolerance +0.001" to 0
Cone Width 1.625"
Cone Width Tolerance +0.003" to -0.01
Cup Width 1.1875"
Cup Width Tolerance +0.002" to -0.01
Width 1.625"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.14"
Cup Backface ToClear Radius 0.130"
Cone Frontface Backing Diameter 4.61"
Cone Backface Backing Diameter 4.13"
Cup Frontface Backing Diameter 6.34"
Cup Backface Backing Diameter 5.91"
Cage Cone Frontface Clearance 0.12"
Cage Cone Backface Clearance 0.17"
Effective Center Location -0.11"
System of Measurement Inch
Type Bearing
Cone Part Number 677
Cup Part Number 674
Bearing Type Roller
Roller Bearing Type Tapered
For Load Direction Combined
Construction Single Row
Seal Type Open
Cups Type Standard
Series 675
Ring Material Chrome Steel
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Load 59500 lbf
Static Radial Load 86700 lbf
Dynamic Radial Rating(90 Million Revolutions)(C90) 15400 lbf
Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 12400 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 9.5 lb

Features

Performance Features of 677-674 Bearing

677-674 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 59,500 lbf, making it suitable for heavy-duty applications.
The steel cage ensures proper roller alignment, reducing friction and enhancing durability.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

How Is 677-674 Bearing Engineered for Reliability?

677-674 Bearing features a single-row tapered roller design, ideal for handling both radial and thrust loads.
The chrome steel construction provides excellent wear resistance, extending its service life.
Its standard radial clearance ensures smooth operation, while the steel cage maintains roller stability.
This bearing is interchangeable with Timken models, offering flexibility in replacements.

Designed for Durability: 677-674 Bearing

677-674 Bearing’s robust chrome steel components withstand high dynamic and static loads.
The tapered roller design distributes loads evenly, reducing stress on individual components.
With a static radial load capacity of 86,700 lbf, it excels in demanding environments.
Its open design allows for easy lubrication, ensuring consistent performance over time.

Application

Industrial Uses of 677-674 Bearing
The 677-674 Bearing is commonly used in heavy machinery, such as construction equipment and mining tools, where its tapered roller design handles combined loads effectively. Its chrome steel construction ensures durability even in demanding environments.

In automotive applications, 677-674 Bearing supports wheel hubs and differential systems, providing reliable performance under high stress. The imperial sizing makes it a preferred choice for North American vehicle models.

For industrial conveyor systems, 677-674 Bearing’s open design allows for easy lubrication, extending its service life in continuous operation. The steel cage adds stability, reducing wear over time.

Where Is 677-674 Bearing Used?
You’ll often find 677-674 Bearing in agricultural machinery, like tractors and harvesters, where its robust design handles uneven loads. The tapered rollers ensure smooth rotation even in dusty conditions.

In manufacturing plants, 677-674 Bearing is ideal for gearboxes and pulley systems, thanks to its high dynamic radial load capacity. The standard radial clearance offers flexibility for various operational needs.

Built for Heavy-Duty Use: 677-674 Bearing
The 677-674 Bearing excels in forestry equipment, such as log splitters, where its combined load capability is crucial. Its chrome steel rollers resist deformation under heavy pressure.

In material handling systems, 677-674 Bearing’s ABEC-1 rating ensures consistent performance without requiring ultra-high precision. The easy lubrication feature minimizes downtime for maintenance.

Automotive vs Aerospace: Applications of 677-674 Bearing
In automotive settings, 677-674 Bearing is trusted for axle assemblies, where its static radial load rating ensures longevity. The imperial measurements simplify replacements in older vehicles.

For aerospace ground support equipment, 677-674 Bearing provides reliable performance in tow tractors and cargo loaders. Its temperature range suits both indoor and outdoor use.