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TS (Single Row Tapered Roller Bearings) (Imperial) 681-674

TS (Single Row Tapered Roller Bearings) (Imperial) 681-674

The 681-674 is a single-row tapered roller bearing with a 3.625″ bore and 6.75″ outer diameter, crafted from sturdy chrome steel. It manages combined loads up to 59500 lbf radially and 12400 lbf thrust, suitable 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, making it a practical choice for replacements. Ideal for use in industrial machinery, gearboxes, or automotive systems where combined loads are common.

Weighing 8.80 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and reliable use.

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Product Parameters

  • Part Number 681-674
  • Brand TFL
  • Interchangeable Timken
  • Size 3.625" x 6.75" x 1.625"
  • Bore Dia 3.625"
  • 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 4.76"
  • Cone Backface Backing Diameter 4.33"
  • 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 681
  • 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 8.80 lb

Features

How Does 681-674 Bearing Handle Combined Loads?

681-674 Bearing is built with chrome steel rings and rollers, offering strong resistance to both radial and thrust loads.
Its dynamic radial load capacity reaches 59,500 lbf, ensuring reliable performance in demanding applications.
The steel cage keeps the rollers aligned, reducing wear and extending service life.
With a temperature range of -30° to 110°C, it performs well in various operating conditions.

What Makes 681-674 Bearing Durable?

681-674 Bearing’s chrome steel construction provides excellent resistance to wear and fatigue.
The tapered roller design ensures even load distribution, enhancing durability under heavy loads.
Its static radial load capacity of 86,700 lbf makes it suitable for robust applications.
The standard radial clearance allows for smooth operation in diverse environments.

Engineered for Precision: 681-674 Bearing

681-674 Bearing features precise tolerances, ensuring accurate performance in combined load scenarios.
The single-row tapered roller design minimises friction, promoting efficient operation.
With an ABEC-1 rating, it meets standard precision requirements for industrial use.
The steel cage maintains roller alignment, contributing to consistent performance over time.

Application

Common Applications of 681-674 Bearing
The 681-674 Bearing is widely used in heavy machinery, such as construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. Its chrome steel construction ensures durability even in tough working conditions.

In automotive applications, 681-674 Bearing is commonly found in wheel hubs and differential systems, providing reliable performance under varying loads. The inch sizing makes it a preferred choice for North American vehicle manufacturers.

For industrial conveyor systems, 681-674 Bearing’s open design allows for easy lubrication, extending its service life in high-use environments. The steel cage adds extra strength, making it suitable for continuous operation.

Where Is 681-674 Bearing Used?
You’ll often spot 681-674 Bearing in mining equipment, where its ability to handle radial and thrust loads is crucial. The standard radial clearance ensures smooth operation even under heavy stress.

In power transmission systems, 681-674 Bearing supports shafts and gears, thanks to its robust construction. The ABEC-1 rating makes it a reliable choice for general industrial applications.

Built for Heavy-Duty Use: 681-674 Bearing
The 681-674 Bearing excels in forestry machinery, where its tapered rollers manage uneven loads effortlessly. Its temperature range of -30° to 110°C ensures performance in diverse climates.

For railway applications, 681-674 Bearing’s durability and load capacity make it ideal for axle boxes. The steel cage and chrome steel rollers provide long-lasting reliability.

Automotive vs Aerospace: Applications of 681-674 Bearing
In automotive settings, 681-674 Bearing is trusted for drivetrain components due to its combined load capacity. Its inch sizing aligns well with standard vehicle designs.

While not typically used in aerospace, 681-674 Bearing finds its place in ground support equipment. The open seal type allows for easy maintenance in these critical applications.

Q&A

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