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

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

The 681A-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 heavy-duty use.

Its open design allows for 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, axles, or machinery where combined loads are common.

Weighing 8.6 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for most industrial environments.

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Product Parameters

  • Part Number 681A-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 0.25"
  • 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 5.87"
  • 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 681A
  • 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 8.6 lb

Features

Performance Features of 681A-672A Bearing

681A-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, ensuring reliable performance in heavy-duty applications.
The steel cage maintains roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs well in varied environments.

How Is 681A-672A Bearing Engineered for Reliability?

681A-672A Bearing features precise cone and cup dimensions, ensuring smooth operation under combined loads.
The tapered roller design distributes loads evenly, enhancing durability and reducing wear.
Its standard radial clearance allows for flexibility in different applications.
Chrome steel construction provides excellent resistance to fatigue and corrosion.

Built for Durability: 681A-672A Bearing

681A-672A Bearing’s single-row construction simplifies installation while maintaining high load capacity.
The open design allows for easy lubrication, ensuring consistent performance over time.
With a static radial load rating of 86,700 lbf, it handles demanding conditions reliably.
Its ABEC-1 rating ensures consistent precision in industrial applications.

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

681A-672A Bearing uses chrome steel for both rollers and rings, balancing cost and performance.
The material choice ensures high strength and resistance to wear in heavy-load scenarios.
Its dynamic thrust rating of 12,400 lbf makes it suitable for applications requiring combined load support.
The steel cage adds durability, making it a practical choice for industrial use.

Application

Industrial Uses of 681A-672A Bearing
The 681A-672A Bearing is commonly used in heavy machinery like construction equipment and mining rigs, where its tapered roller design handles combined loads efficiently. Its chrome steel construction ensures durability even in tough working conditions.

Where Is 681A-672A Bearing Used?
You’ll often find 681A-672A Bearing in agricultural machinery, such as tractors and harvesters, where its robust design supports high radial and thrust loads. The open seal type allows for easy lubrication, extending its service life.

Built for Heavy-Duty Use: 681A-672A Bearing
In industrial gearboxes, 681A-672A Bearing provides reliable performance under constant stress. Its standard radial clearance makes it adaptable to various operational demands.

Automotive vs Aerospace: Applications of 681A-672A Bearing
While 681A-672A Bearing is popular in truck wheel hubs for its load capacity, it’s also suitable for aerospace ground support equipment. The inch sizing ensures compatibility with imperial system components.

Key Fields for 681A-672A Bearing
For railway applications, 681A-672A Bearing offers stability in axle boxes, thanks to its tapered roller design. The steel cage adds strength, making it a dependable choice for long-haul transport.

Q&A

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