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

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

The 681A-674 is a single-row tapered roller bearing with a 3.625″ 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 versatile for heavy-duty use.

Its open design allows easy lubrication, while the steel cage ensures durability. The bearing operates smoothly in temperatures from -30°C to 110°C, suitable for various industrial conditions.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for applications like gearboxes or wheel hubs where combined loads are common.

Weighing 8.80 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

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Product Parameters

  • Part Number 681A-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 0.25"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 4.76"
  • Cone Backface Backing Diameter 4.57"
  • 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 681A
  • 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

Performance Features of 681A-674 Bearing

681A-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 extending operational life.
With a temperature range of -30° to 110°C, it performs reliably in various environments.

How Is 681A-674 Bearing Engineered for Reliability?

681A-674 Bearing features a single-row tapered roller design, optimised for combined load handling.
The chrome steel construction provides durability and resistance to wear under high stress.
Its standard radial clearance allows for smooth operation in diverse industrial settings.
The bearing’s ABEC-1 rating ensures consistent performance in precision applications.

Built for Durability: 681A-674 Bearing

681A-674 Bearing’s robust construction withstands static radial loads up to 86,700 lbf.
The tapered roller design distributes loads evenly, enhancing stability during operation.
Proper lubrication maintains its performance, even in demanding temperature conditions.
With interchangeable compatibility with Timken bearings, it offers flexible replacement options.

Steel vs Ceramic Bearings: Strengths of 681A-674 Bearing

681A-674 Bearing uses chrome steel for both rings and rollers, providing excellent strength-to-weight ratio.
This material choice ensures reliable performance in high-load scenarios without brittleness concerns.
The bearing’s 90 million revolutions dynamic rating demonstrates its long service life potential.
Its imperial sizing (3.625″ bore) makes it ideal for machinery using inch measurements.

Application

Industrial Uses of 681A-674 Bearing
681A-674 Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in tough working conditions.

Where Is 681A-674 Bearing Used?
You’ll often find 681A-674 Bearing in industrial gearboxes and power transmission systems, thanks to its ability to manage both radial and thrust loads. Its inch sizing makes it a good fit for machinery following imperial standards.

Built for Heavy-Duty Use: 681A-674 Bearing
681A-674 Bearing excels in applications like mining equipment, where reliability under high stress is crucial. The steel cage adds extra strength, making it suitable for long-term use in demanding environments.

Automotive vs Aerospace: Applications of 681A-674 Bearing
In automotive systems, 681A-674 Bearing supports axles and wheel hubs, providing smooth performance under varying loads. For aerospace, its precision and durability make it useful in auxiliary systems requiring consistent operation.

Perfect Fit for Automation: 681A-674 Bearing
681A-674 Bearing works well in automated conveyor systems, where its tapered rollers ensure smooth movement under heavy loads. The open design allows for easy lubrication, reducing maintenance downtime.

Q&A

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