TS (Single Row Tapered Roller Bearings) (Imperial) 683-674

The 683-674 is a single-row tapered roller bearing with a 3.75″ bore and 6.75″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 59500 lbf radially and 12400 lbf thrust, making it versatile for various applications.

Its open design allows for easy lubrication, while the steel cage ensures durability under heavy use. 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 or automotive systems where combined loads are common.

Weighing 8.5 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for diverse environments.

The standard radial clearance and ABEC-1 rating ensure consistent performance. Suitable for applications requiring precise load distribution and long service life.

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Description

Features

Application

Q&A

Product Parameters

Part Number 683-674
Brand TFL
Interchangeable Timken
Size 3.75" x 6.75" x 1.625"
Bore Dia 3.75"
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 4.88"
Cone Backface Backing Diameter 4.45"
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 683
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 8.5 lb

Features

Performance Features of 683-674 Bearing

683-674 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 59,500 lbf, 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 environments.

How Does 683-674 Bearing Reduce Friction?

683-674 Bearing’s tapered roller design minimises friction, allowing smooth operation under combined loads.
The chrome steel construction enhances durability while maintaining efficient performance.
Its standard radial clearance ensures consistent operation without excessive heat buildup.
This design makes it suitable for applications requiring both radial and thrust load support.

Engineered for Precision: 683-674 Bearing

683-674 Bearing features precise cone and cup dimensions for accurate fit and alignment.
The steel cage provides stable roller guidance, contributing to consistent performance.
With ABEC-1 rating, it delivers reliable precision for industrial applications.
Its effective center location of -0.11″ ensures proper load distribution across the rollers.

Steel vs Ceramic Bearings: Strengths of 683-674 Bearing

683-674 Bearing uses chrome steel for both rings and rollers, offering excellent strength and durability.
This material choice provides good resistance to wear while maintaining cost-effectiveness.
The bearing’s dynamic thrust rating of 12,400 lbf ensures reliable performance under axial loads.
Its standard lubrication requirement makes maintenance straightforward for most applications.

Application

Industrial Uses of 683-674 Bearing
The 683-674 Bearing is commonly used in heavy machinery like construction equipment and mining tools, where its tapered roller design handles combined loads efficiently. Its chrome steel construction ensures durability even in demanding environments.

In automotive applications, 683-674 Bearing fits well in truck wheel hubs and differential systems, providing reliable performance under high radial and thrust loads. The imperial sizing makes it a preferred choice for North American vehicle manufacturers.

For industrial conveyor systems, 683-674 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 683-674 Bearing Used?
You’ll often find 683-674 Bearing in agricultural machinery, such as tractors and harvesters, where its robust design handles rough terrain. The tapered rollers distribute loads evenly, reducing stress on components.

In material handling equipment, 683-674 Bearing supports heavy loads in forklifts and cranes. Its standard radial clearance ensures smooth operation, even under varying temperatures.

Built for Heavy-Duty Use: 683-674 Bearing
The 683-674 Bearing excels in forestry equipment like log splitters and sawmills, where its combined load capacity is essential. The chrome steel rollers resist wear, even in abrasive conditions.

For railway applications, 683-674 Bearing is used in axle boxes, providing reliable performance over long distances. Its ABEC-1 rating ensures consistent precision in these critical systems.

Automotive vs Aerospace: Applications of 683-674 Bearing
In automotive settings, 683-674 Bearing is ideal for heavy-duty trucks and buses, where its load capacity and durability shine. The imperial sizing simplifies replacements in older models.

While less common in aerospace, 683-674 Bearing can be found in ground support equipment like tugs and loaders. Its temperature range suits outdoor operations in various climates.