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TS (Single Row Tapered Roller Bearings) (Imperial) 681-672A

TS (Single Row Tapered Roller Bearings) (Imperial) 681-672A

The 681-672A is a single-row tapered roller bearing with a 3.625″ bore and 6.625″ 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 easy lubrication, while the steel cage ensures durability under heavy use. The bearing operates smoothly in temperatures 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 8.7 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number 681-672A
  • Brand TFL
  • Interchangeable Timken
  • Size 3.625" x 6.625" x 1.625"
  • Bore Dia 3.625"
  • Bore Dia Tolerance +0.001" to 0
  • Outer Dia 6.625"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.625"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 1.375"
  • 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 5.87"
  • 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 672A
  • 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 8.7 lb

Features

Performance Features of 681-672A Bearing

681-672A 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.

How Does 681-672A Bearing Resist Wear?

681-672A Bearing’s tapered roller design distributes loads evenly, minimising wear over time.
Chrome steel construction provides excellent hardness and fatigue resistance.
With a standard radial clearance, it maintains smooth operation under varying conditions.

Engineered for Precision: 681-672A Bearing

681-672A Bearing features precise tolerances, ensuring consistent performance in inch-based systems.
The single-row construction simplifies installation while maintaining load capacity.
Its effective center location of -0.11″ optimises load distribution for stable operation.

Steel vs Ceramic Bearings: Strengths of 681-672A Bearing

681-672A Bearing uses chrome steel for both rollers and rings, balancing cost and performance.
This material choice provides good heat resistance within a -30° to 110°C range.
The steel cage offers reliable support without the brittleness of ceramic alternatives.

Why Choose 681-672A Bearing for Combined Loads?

681-672A Bearing handles both radial and thrust loads, with dynamic ratings of 15,400 lbf and 12,400 lbf respectively.
Its tapered roller design efficiently manages combined stresses.
The open seal type allows for easy lubrication, maintaining performance over time.

Application

Industrial Uses of 681-672A Bearing
The 681-672A Bearing is commonly used in heavy machinery like conveyor systems and industrial gearboxes, where its tapered roller design handles combined loads efficiently. Its chrome steel construction ensures durability in demanding environments.

Where Is 681-672A Bearing Used?
You’ll often find 681-672A Bearing in automotive applications, particularly in wheel hubs and differential systems. Its imperial sizing makes it a reliable choice for older or custom-built vehicles.

Built for Heavy-Duty Use: 681-672A Bearing
681-672A Bearing excels in construction equipment, such as bulldozers and cranes, thanks to its high static radial load capacity. The open design allows for easy lubrication, extending its service life.

Automotive vs Aerospace: Applications of 681-672A Bearing
In automotive settings, 681-672A Bearing supports heavy axles and transmissions, while in aerospace, it’s suited for auxiliary systems requiring precise load management. Its ABEC-1 rating balances performance and cost.

Essential Roles of 681-672A Bearing
681-672A Bearing is a go-to for agricultural machinery, like tractors and harvesters, where its robust design handles uneven loads. The steel cage adds extra resilience against dirt and debris.

Q&A

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