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

The 27689-27620RB is a single-row tapered roller bearing with a 3.28″ bore and 4.94″ outer diameter, crafted 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. It’s ideal for machinery like gearboxes or wheel hubs where combined loads are common.

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

The standard radial clearance and ABEC-1 rating ensure consistent performance. Its tapered roller design provides stability and efficient load distribution.

Perfect for maintenance tasks, its dimensions and tolerances make installation straightforward. A dependable choice for engineers and repair professionals alike.

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Description

Features

Application

Q&A

Product Parameters

Part Number 27689-27620RB
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 0.03"
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 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 2.3 lb

Features

Why Choose 27689-27620RB Bearing for Precision Tasks?

27689-27620RB Bearing is crafted with chrome steel rings and rollers, ensuring strength and durability in combined load applications.
Its dynamic radial load capacity reaches 26,300 lbf, making it suitable for demanding industrial environments.

The tapered roller design of 27689-27620RB Bearing provides effective load distribution, reducing wear and extending service life.
With a standard radial clearance, it offers reliable performance across various operating conditions.

27689-27620RB Bearing operates efficiently within a temperature range of -30° to 110°C, ensuring versatility in different climates.
Its open design simplifies lubrication, maintaining smooth operation with minimal maintenance.

Application

Industrial Uses of 27689-27620RB Bearing
27689-27620RB Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads efficiently. The chrome steel construction ensures durability even in tough working conditions.

Where Is 27689-27620RB Bearing Used?
You’ll often find 27689-27620RB Bearing in automotive axles and wheel hubs, thanks to its ability to manage both radial and thrust loads. Its inch sizing makes it a good fit for American-made vehicles and machinery.

Built for Heavy-Duty Use: 27689-27620RB Bearing
27689-27620RB Bearing excels in industrial fans and pumps, where its open design allows for easy lubrication and maintenance. The steel cage adds extra strength, making it reliable for continuous operation.

Automotive vs Aerospace: Applications of 27689-27620RB Bearing
In automotive settings, 27689-27620RB Bearing supports drivetrain components, while in aerospace, it’s used in auxiliary systems due to its precise load handling. The ABEC-1 rating ensures consistent performance across different applications.

Perfect Fit for Automation: 27689-27620RB Bearing
27689-27620RB Bearing works well in conveyor systems and automated production lines, where its tapered rollers reduce friction. The standard radial clearance option makes it versatile for various speed requirements.