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TS (Single Row Tapered Roller Bearings) (Imperial) 677-672A

TS (Single Row Tapered Roller Bearings) (Imperial) 677-672A

The 677-672A is a single row tapered roller bearing with a 3.375″ bore and 6.625″ outer diameter, crafted from sturdy chrome steel. It manages combined loads up to 59500 lbf radially and 12400 lbf in thrust, suitable for demanding 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, making it a practical choice for replacements. Ideal for use in industrial machinery or automotive systems where combined loads are common.

Weighing 9.3 lb, it offers a robust build for its size. Compliant with RoHS and REACH standards, it’s a reliable and safe option for various settings.

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Product Parameters

  • Part Number 677-672A
  • Brand TFL
  • Interchangeable Timken
  • Size 3.375" x 6.625" x 1.625"
  • Bore Dia 3.375"
  • 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 4.61"
  • Cone Backface Backing Diameter 4.13"
  • 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 677
  • 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 9.3 lb

Features

Performance Features of 677-672A Bearing

677-672A 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 various environments.

How Does 677-672A Bearing Reduce Friction?

677-672A Bearing features a tapered roller design that minimises friction during operation.
The chrome steel construction ensures smooth movement even under high radial or thrust loads.
Precision tolerances on the cone and cup widths enhance alignment, further reducing wear.
This design makes it suitable for applications requiring efficient load distribution.

Engineered for Reliability: 677-672A Bearing

677-672A Bearing’s single-row tapered roller construction provides consistent performance under combined loads.
Its static radial load capacity of 86,700 lbf ensures durability in demanding conditions.
The standard radial clearance options allow for flexibility in different applications.
With an ABEC-1 rating, it balances precision and cost-effectiveness.

Steel vs Ceramic Bearings: Strengths of 677-672A Bearing

677-672A Bearing uses chrome steel for both rollers and rings, offering excellent strength and durability.
This material choice provides better cost-efficiency compared to ceramic alternatives in many industrial uses.
The steel cage ensures reliable roller guidance, maintaining performance under heavy loads.
Its compliance with RoHS and REACH standards makes it an environmentally sound choice.

Why Choose 677-672A Bearing for Precision Tasks?

677-672A Bearing’s precise cone and cup width tolerances ensure accurate alignment in assemblies.
The effective center location design helps maintain stability during operation.
With dynamic thrust ratings of 12,400 lbf, it handles axial loads efficiently.
Its standard lubrication requirement simplifies maintenance while ensuring smooth performance.

Application

Industrial Uses of 677-672A Bearing
The 677-672A Bearing is commonly used in heavy machinery like construction equipment and mining rigs, where its tapered roller design handles combined loads effectively. Its chrome steel construction ensures durability even in demanding environments.
In automotive applications, 677-672A 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 straightforward replacement for many North American vehicle models.
For industrial gearboxes, 677-672A Bearing’s open design allows for easy lubrication, extending service life in continuous operation scenarios. The steel cage adds robustness, making it suitable for high-torque applications.

Where Is 677-672A Bearing Used?
You’ll often find 677-672A Bearing in agricultural machinery, such as tractors and harvesters, where its ability to handle heavy loads is crucial. The standard radial clearance ensures smooth operation even with varying temperatures.
In material handling systems, 677-672A Bearing supports conveyor rollers and pulley assemblies, thanks to its balanced load distribution. The ABEC-1 rating provides sufficient precision for most industrial needs.

Built for Heavy-Duty Use: 677-672A Bearing
The 677-672A Bearing excels in forestry equipment like log splitters and sawmills, where its tapered rollers manage both radial and axial forces. Its temperature range of -30° to 110°C covers most working conditions.
For railway applications, 677-672A Bearing is a reliable choice for axle boxes, offering stability and long service life. The steel cage and chrome steel rollers ensure consistent performance under repetitive stress.

Automotive vs Aerospace: Applications of 677-672A Bearing
In automotive settings, 677-672A Bearing is ideal for heavy-duty trucks and buses, where its load capacity and durability shine. The inch measurements simplify maintenance and replacements.
While not typically used in aerospace, 677-672A Bearing finds its place in ground support equipment like aircraft tugs, where robustness matters more than ultra-high precision. The open design allows for easy inspection and relubrication.

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