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TS (Single Row Tapered Roller Bearings) (Imperial) 27691-27620

TS (Single Row Tapered Roller Bearings) (Imperial) 27691-27620

The 27691-27620 is a single-row tapered roller bearing with a 3.28″ bore and 4.93″ outer diameter, crafted from sturdy chrome steel. It manages combined loads up to 26300 lbf radially and 4860 lbf thrust-wise, suitable for moderate-speed applications.

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

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

Weighing 2.2 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, ensuring safe and eco-friendly use.

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Product Parameters

  • Part Number 27691-27620
  • 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 0.25"
  • Cup Backface ToClear Radius 0.06"
  • Cone Frontface Backing Diameter 4.32"
  • Cone Backface Backing Diameter 4.02"
  • 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 27691
  • 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 2.2 lb

Features

Performance Features of 27691-27620 Bearing

27691-27620 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 26,300 lbf, ensuring reliable performance in heavy-duty applications.
The steel cage maintains roller alignment, reducing friction and extending service life.
With a temperature range of -30° to 110°C, it performs well in various operating conditions.

How Does 27691-27620 Bearing Reduce Friction?

27691-27620 Bearing features a precision-engineered tapered roller design, minimising friction during operation.
The chrome steel construction ensures smooth rolling motion, even under high radial or thrust loads.
Its effective centre location of 0.02″ helps distribute loads evenly across the rollers.
This design reduces heat generation and wear, contributing to longer bearing life.

Engineered for Precision: 27691-27620 Bearing

27691-27620 Bearing maintains tight tolerances, with bore and outer diameter tolerances of +0.001″ to 0.
The ABEC-1 rating ensures consistent performance for applications requiring reliable precision.
Its standard radial clearance can be adjusted to C3, C4 or C5 for specific operational needs.
The bearing’s dimensional stability supports accurate machine performance over time.

Steel vs Ceramic Bearings: Strengths of 27691-27620 Bearing

27691-27620 Bearing uses chrome steel for both rings and rollers, providing excellent strength and durability.
This material choice offers good wear resistance while maintaining cost-effectiveness for industrial applications.
The steel cage complements this design by providing robust support for the tapered rollers.
Together, these features deliver reliable performance without the higher cost of ceramic alternatives.

Application

Industrial Uses of 27691-27620 Bearing
27691-27620 Bearing is commonly used in heavy machinery like construction equipment, where its tapered roller design handles combined radial and thrust loads effectively. The chrome steel construction ensures durability in rugged environments.

In automotive applications, 27691-27620 Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its inch sizing makes it compatible with many American-made vehicles.

For industrial conveyor systems, 27691-27620 Bearing’s open design allows for easy lubrication, extending service life in high-load scenarios. The steel cage adds stability during continuous operation.

Where Is 27691-27620 Bearing Used?
You’ll often find 27691-27620 Bearing in agricultural machinery, such as tractors and harvesters, where its robust design withstands dusty conditions. The standard radial clearance ensures smooth rotation.

In mining equipment, 27691-27620 Bearing’s high dynamic load capacity makes it suitable for crushers and screens. Its temperature range also allows operation in harsh climates.

Built for Heavy-Duty Use: 27691-27620 Bearing
27691-27620 Bearing excels in forestry equipment like log splitters, where its tapered rollers manage intense shock loads. The ABEC-1 rating balances precision and cost-effectiveness.

For railway applications, 27691-27620 Bearing supports axle boxes, ensuring stable performance over long distances. The steel cage prevents roller misalignment during vibrations.

Automotive vs Aerospace: Applications of 27691-27620 Bearing
In automotive drivetrains, 27691-27620 Bearing handles high torque, while in aerospace ground equipment, it supports landing gear testing rigs. The inch measurements suit both sectors.

For industrial pumps, 27691-27620 Bearing’s chrome steel rollers resist wear from constant rotation. Its open design simplifies maintenance in wet conditions.

Q&A

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