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TS (Single Row Tapered Roller Bearings) (Imperial) 27689-27620

TS (Single Row Tapered Roller Bearings) (Imperial) 27689-27620

The 27689-27620 is a single-row tapered roller bearing with a 3.28″ bore and 4.94″ outer diameter, made from sturdy chrome steel. It handles combined loads up to 26300 lbf radially and 4860 lbf thrust, suitable for demanding 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, making it a practical choice for replacements. Ideal for industrial machinery, gearboxes, or vehicle axles where combined loads are common.

Weighing 2.3 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number 27689-27620
  • Brand TFL
  • Interchangeable Timken
  • Size 3.2813" x 4.9375" x 1"
  • Bore Dia 3.2813"
  • Bore Dia Tolerance +0.001" to 0
  • Outer Dia 4.9375"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.7813"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.03"
  • Cup Backface ToClear Radius 0.06"
  • Cone Frontface Backing Diameter 4.32"
  • Cone Backface Backing Diameter 3.54"
  • Cup Frontface Backing Diameter 4.75"
  • Cup Backface Backing Diameter 4.53"
  • Cage Cone Frontface Clearance 0.09"
  • Cage Cone Backface Clearance 0.05"
  • Effective Center Location 0.02"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 27689
  • Cup Part Number 27620
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 27600
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 26300 lbf
  • Static Radial Load 39900 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 6830 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 4860 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 2.3 lb

Features

Performance Features of 27689-27620 Bearing

27689-27620 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 26,300 lbf, making it suitable for heavy-duty applications.
The steel cage ensures proper roller alignment, reducing friction and wear.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

How Does 27689-27620 Bearing Reduce Friction?

27689-27620 Bearing’s tapered roller design minimises friction, ensuring smooth operation under combined loads.
The precision-engineered chrome steel rollers and cage work together to distribute loads evenly.
This design reduces heat generation, extending the bearing’s service life.
Its standard radial clearance options provide flexibility for different applications.

Engineered for Precision: 27689-27620 Bearing

27689-27620 Bearing features precise dimensions with tight tolerances for consistent performance.
The ABEC-1 rating ensures reliable operation in various industrial applications.
Its effective center location of 0.02″ contributes to stable rotation.
The bearing maintains performance across a wide temperature range, from -30° to 110°C.

Steel vs Ceramic Bearings: Strengths of 27689-27620 Bearing

27689-27620 Bearing uses chrome steel construction for durability and cost-effectiveness.
The steel components provide excellent strength for handling dynamic radial loads up to 26,300 lbf.
Unlike ceramic bearings, it offers proven reliability in industrial environments.
The steel cage and rollers work together to maintain performance under combined loads.

Application

Industrial Uses of 27689-27620 Bearing
27689-27620 Bearing is commonly used in heavy machinery, such as construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in demanding conditions.

In automotive applications, 27689-27620 Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its imperial sizing makes it a straightforward replacement for Timken equivalents in older vehicles.

For industrial conveyor systems, 27689-27620 Bearing’s open design simplifies lubrication and maintenance, extending service life. The standard radial clearance options allow for flexibility in different operational environments.

Why Is 27689-27620 Bearing Essential in Machinery?
27689-27620 Bearing plays a key role in mining equipment, where its robust design withstands high radial and thrust loads. The steel cage adds stability, reducing wear over time.

In power transmission systems, 27689-27620 Bearing ensures smooth operation of gears and pulleys. Its ABEC-1 rating provides a balance of precision and cost-effectiveness for general industrial use.

Built for Heavy-Duty Use: 27689-27620 Bearing
27689-27620 Bearing excels in forestry machinery, handling uneven loads and harsh environments with ease. The tapered rollers distribute stress evenly, minimising wear.

For railway applications, 27689-27620 Bearing supports axle boxes, offering reliable performance under constant vibration. Its temperature range suits both cold and moderate climates.

Automotive vs Aerospace: Applications of 27689-27620 Bearing
In automotive settings, 27689-27620 Bearing is ideal for drivetrain components, where its combined load capacity shines. The inch measurements ensure compatibility with North American machinery.

For aerospace ground support equipment, 27689-27620 Bearing provides dependable performance in load-handling systems. Its chrome steel rollers resist deformation under heavy use.

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