TS (Single Row Tapered Roller Bearings) (Imperial) 55187-55443

The 55187-55443 is a single-row tapered roller bearing with a 1.875″ bore and 4.4375″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 28300 lbf radially and 11100 lbf thrust, making it versatile for various 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, suitable for demanding environments.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for heavy-duty machinery, gearboxes, or industrial equipment where combined loads are common.

Weighing 3 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

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Description

Features

Application

Q&A

Product Parameters

Part Number 55187-55443
Brand TFL
Interchangeable Timken
Size 1.875" x 4.4375" x 1.1875"
Bore Dia 1.875"
Bore Dia Tolerance +0.005" to 0
Outer Dia 4.4375"
Outer Dia Tolerance +0.001" to 0
Cone Width 1.0594"
Cone Width Tolerance +0.003" to -0.01
Cup Width 0.8125"
Cup Width Tolerance +0.002" to -0.01
Width 1.1875"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.14"
Cup Backface ToClear Radius 0.130"
Cone Frontface Backing Diameter 2.44"
Cone Backface Backing Diameter 2.72"
Cup Frontface Backing Diameter 4.18"
Cup Backface Backing Diameter 3.62"
Cage Cone Frontface Clearance 0.16"
Cage Cone Backface Clearance 0.16"
Effective Center Location 0.28"
System of Measurement Inch
Type Bearing
Cone Part Number 55187
Cup Part Number 55443
Bearing Type Roller
Roller Bearing Type Tapered
For Load Direction Combined
Construction Single Row
Seal Type Open
Cups Type Standard
Series 55000
Ring Material Chrome Steel
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Load 28300 lbf
Static Radial Load 26700 lbf
Dynamic Radial Rating(90 Million Revolutions)(C90) 7350 lbf
Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 11100 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 3 lb

Features

Performance Features of 55187-55443 Bearing

55187-55443 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 28,300 lbf, ensuring reliable performance in heavy-duty applications.
The steel cage maintains roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs well in various environmental conditions.

How Is 55187-55443 Bearing Engineered for Reliability?

55187-55443 Bearing features a single-row tapered roller design, optimised for combined load handling.
The chrome steel construction enhances durability, while the standard radial clearance allows for smooth operation.
Its dynamic thrust rating of 11,100 lbf ensures consistent performance under demanding conditions.
The open seal type simplifies maintenance, reducing downtime and operational costs.

Built for Durability: 55187-55443 Bearing

55187-55443 Bearing’s tapered roller design distributes loads evenly, minimising wear and tear.
The chrome steel components resist corrosion, ensuring long-term reliability in harsh environments.
With an ABEC-1 rating, it balances precision and affordability for various industrial applications.
Its effective centre location of 0.28″ enhances stability during operation.

Steel vs Ceramic Bearings: Strengths of 55187-55443 Bearing

55187-55443 Bearing uses chrome steel for both rollers and rings, providing excellent strength and durability.
The steel cage ensures proper roller spacing, reducing friction and improving efficiency.
With a static radial load capacity of 26,700 lbf, it handles heavy loads with ease.
The inch-sized dimensions make it compatible with imperial system machinery.

Application

Industrial Uses of 55187-55443 Bearing
55187-55443 Bearing is commonly used in heavy machinery, such as construction equipment and mining gear, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in tough working conditions.

What Makes 55187-55443 Bearing a Preferred Choice?
In automotive applications, 55187-55443 Bearing fits well in wheel hubs and differential systems, thanks to its precise imperial sizing. Its open design allows for easy lubrication, extending service life in high-mileage vehicles.

Built for Heavy-Duty Use: 55187-55443 Bearing
For industrial fans and pumps, 55187-55443 Bearing offers reliable performance with its standard radial clearance. The steel cage provides stability, making it suitable for continuous operation.

Automotive vs Aerospace: Applications of 55187-55443 Bearing
In automotive settings, 55187-55443 Bearing supports drivetrain components, while its aerospace use is limited due to weight constraints. Its ABEC-1 rating ensures consistent performance in general machinery.

Essential Roles of 55187-55443 Bearing
55187-55443 Bearing is ideal for agricultural machinery, where its tapered rollers manage heavy radial and thrust loads. The inch measurements make it compatible with older equipment still using imperial standards.