TS (Single Row Tapered Roller Bearings) (Imperial) 866-854X

The 866-854X is a single-row tapered roller bearing with a 3.875″ bore and 7.875″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 103,000 lbf radially and 15,300 lbf thrust, making it robust for heavy-duty use.

Its open design allows easy lubrication, while the steel cage ensures durability. The bearing operates smoothly in temperatures from -30°C to 110°C, suitable for varied environments.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for industrial machinery or automotive applications where high radial and thrust loads are common.

Weighing 18.9 lb, it’s built to last with standard radial clearance options. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Description

Features

Application

Q&A

Product Parameters

Part Number 866-854X
Brand TFL
Interchangeable Timken
Size 3.875" x 7.875" x 2.4376"
Bore Dia 3.875"
Bore Dia Tolerance +0.001" to 0
Outer Dia 7.875"
Outer Dia Tolerance +0.001" to 0
Cone Width 2.265"
Cone Width Tolerance +0.003" to -0.01
Cup Width 1.9375"
Cup Width Tolerance +0.002" to -0.01
Width 2.4376"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.14"
Cup Backface ToClear Radius 0.130"
Cone Frontface Backing Diameter 5.06"
Cone Backface Backing Diameter 4.65"
Cup Frontface Backing Diameter 6.86"
Cup Backface Backing Diameter 6.81"
Cage Cone Frontface Clearance 0.06"
Cage Cone Backface Clearance 0.15"
Effective Center Location -0.6"
System of Measurement Inch
Type Bearing
Cone Part Number 866
Cup Part Number 854X
Bearing Type Roller
Roller Bearing Type Tapered
For Load Direction Combined
Construction Single Row
Seal Type Open
Cups Type Standard
Series 855
Ring Material Chrome Steel
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Load 103000 lbf
Static Radial Load 142000 lbf
Dynamic Radial Rating(90 Million Revolutions)(C90) 26700 lbf
Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 15300 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 18.900 lb

Features

Performance Features of 866-854X Bearing

866-854X Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 103,000 lbf, making it suitable for heavy-duty applications.

The steel cage ensures proper roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs reliably in various environments.

866-854X Bearing requires lubrication, ensuring smooth operation and reduced wear over time.
Its standard radial clearance options provide flexibility for different installation needs.

Application

Industrial Uses of 866-854X Bearing
The 866-854X Bearing is commonly used in heavy machinery like construction equipment and mining gear, where its tapered roller design handles combined loads effectively. Its chrome steel construction ensures durability even in tough working conditions.

Where Is 866-854X Bearing Used?
You’ll often find the 866-854X Bearing in agricultural machinery, supporting components like tractor axles and harvesters. Its inch sizing makes it a reliable choice for North American equipment manufacturers.

Built for Heavy-Duty Use: 866-854X Bearing
The 866-854X 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 suitable for high-load applications.

Automotive vs Aerospace: Applications of 866-854X Bearing
In automotive systems, the 866-854X Bearing is ideal for wheel hubs and differentials, thanks to its robust load capacity. For aerospace, it’s often used in landing gear assemblies where precision and reliability are key.

Perfect Fit for Automation: 866-854X Bearing
The 866-854X Bearing works well in automated conveyor systems, ensuring smooth operation under continuous use. Its standard radial clearance makes it adaptable to various industrial settings.