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

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

The 27691-27620RB is a single-row tapered roller bearing with a 3.28″ bore and 4.94″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 26300 lbf radially and 4860 lbf thrust, making it versatile for various 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, offering a reliable replacement option. Ideal for industrial machinery or automotive systems where combined loads are common.

Weighing 2.2 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it meets environmental and safety requirements.

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Product Parameters

  • Part Number 27691-27620RB
  • Brand TFL
  • Interchangeable Timken
  • Size 3.2813" x 4.9375" x 1.0001"
  • 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 1.0001"
  • 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 27620RB
  • 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

How Does 27691-27620RB Bearing Handle Combined Loads?

27691-27620RB Bearing is built with chrome steel rings and rollers, offering strong resistance to both radial and thrust loads.
Its dynamic radial load capacity reaches 26,300 lbf, ensuring reliable performance in demanding 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.

What Makes 27691-27620RB Bearing Suitable for High-Temperature Applications?

27691-27620RB Bearing operates efficiently in temperatures ranging from -30° to 110°C, making it versatile for different environments.
The chrome steel construction ensures durability and resistance to wear under high thermal stress.
Its standard radial clearance options (C3/C4/C5) allow for flexibility in various applications.
The open design simplifies lubrication, maintaining smooth operation even in challenging conditions.

Engineered for Precision: 27691-27620RB Bearing

27691-27620RB Bearing features precise tolerances, with bore and outer diameter tolerances held to +0.001″ to 0.
The tapered roller design ensures optimal load distribution, enhancing performance under combined loads.
Its effective center location of 0.02″ contributes to stable and accurate operation.
The ABEC-1 rating confirms its suitability for applications requiring reliable precision.

Application

Industrial Uses of 27691-27620RB Bearing
27691-27620RB 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 even in demanding environments.

Where Is 27691-27620RB Bearing Used?
You’ll often spot 27691-27620RB Bearing in agricultural machinery, particularly in gearboxes and wheel hubs. Its inch sizing makes it a straightforward replacement for Timken bearings in older equipment.

Built for Heavy-Duty Use: 27691-27620RB Bearing
27691-27620RB Bearing excels in mining applications, supporting conveyor systems that run continuously under heavy loads. The steel cage provides extra strength, preventing deformation during extended use.

Automotive vs Aerospace: Applications of 27691-27620RB Bearing
In trucks, 27691-27620RB Bearing works well in differential systems, while its precision keeps it suitable for aircraft landing gear components. The standard radial clearance offers flexibility across different operating conditions.

Practical Applications of 27691-27620RB Bearing
For industrial fans, 27691-27620RB Bearing’s ability to handle high speeds makes it a reliable choice. The open design simplifies lubrication, reducing maintenance downtime in production facilities.

Q&A

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