TS (Single Row Tapered Roller Bearings) (Imperial) 74550-74845

The 74550-74845 is a single-row tapered roller bearing with a 5.5″ bore and 8.4636″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 85900 lbf radially and 18600 lbf in thrust, making it suitable for heavy-duty applications.

Its open design allows for easy lubrication, while the steel cage ensures durability under high stress. 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, gearboxes, or vehicle axles where robust performance is needed.

Weighing 12.9 lb, it’s designed for long-lasting use with standard radial clearance. Compliant with RoHS and REACH standards for safe and eco-friendly operation.

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Description

Features

Application

Q&A

Product Parameters

Part Number 74550-74845
Brand TFL
Interchangeable Timken
Size 5.5" x 8.4636" x 1.875"
Bore Dia 5.5"
Bore Dia Tolerance +0.001" to 0
Outer Dia 8.4636"
Outer Dia Tolerance +0.001" to 0
Cone Width 1.875"
Cone Width Tolerance +0.003" to -0.01
Cup Width 1.375"
Cup Width Tolerance +0.002" to -0.01
Width 1.875"
Width Tolerance +0.014" to -0.01"
Cone Backface ToClear Radius 0.14"
Cup Backface ToClear Radius 0.130"
Cone Frontface Backing Diameter 6.85"
Cone Backface Backing Diameter 6.22"
Cup Frontface Backing Diameter 8.23"
Cup Backface Backing Diameter 7.72"
Cage Cone Frontface Clearance 0.11"
Cage Cone Backface Clearance 0.17"
Effective Center Location 0.09"
System of Measurement Inch
Type Bearing
Cone Part Number 74550
Cup Part Number 74845
Bearing Type Roller
Roller Bearing Type Tapered
For Load Direction Combined
Construction Single Row
Seal Type Open
Cups Type Standard
Series 74000
Ring Material Chrome Steel
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Load 85900 lbf
Static Radial Load 138000 lbf
Dynamic Radial Rating(90 Million Revolutions)(C90) 22300 lbf
Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 18600 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 12.900 lb

Features

Performance Features of 74550-74845 Bearing

74550-74845 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 85,900 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.

74550-74845 Bearing’s standard radial clearance allows for smooth operation under different conditions.
Its ABEC-1 rating ensures consistent performance for industrial applications.

Application

Industrial Uses of 74550-74845 Bearing
The 74550-74845 Bearing is commonly used in heavy machinery like construction equipment and mining rigs, where its tapered roller design handles combined radial and thrust loads effectively. Its chrome steel construction ensures durability in tough working conditions.

In automotive applications, 74550-74845 Bearing fits well in truck wheel hubs and differential systems, providing reliable performance under high stress. The imperial sizing makes it a preferred choice for North American vehicle manufacturers.

For industrial conveyor systems, 74550-74845 Bearing’s open design allows easy lubrication, extending service life in continuous operation. The steel cage adds stability, reducing wear during prolonged use.

Where Is 74550-74845 Bearing Used?
You’ll often find 74550-74845 Bearing in agricultural machinery, such as tractors and harvesters, where its robust design withstands dusty and uneven terrain. The ABEC-1 rating ensures consistent performance without over-engineering.

In railway applications, 74550-74845 Bearing supports axle boxes, handling heavy loads and vibrations. Its standard radial clearance adapts well to temperature fluctuations common in rail transport.

Built for Heavy-Duty Use: 74550-74845 Bearing
The 74550-74845 Bearing excels in oil and gas equipment, like pumps and compressors, thanks to its high dynamic load capacity. The tapered rollers distribute stress evenly, reducing fatigue over time.

For wind turbine gearboxes, 74550-74845 Bearing’s temperature range (-30° to 110°C) ensures reliability in varying climates. Its steel cage and chrome steel rollers resist corrosion in outdoor installations.

Automotive vs Aerospace: Applications of 74550-74845 Bearing
In automotive settings, 74550-74845 Bearing is ideal for heavy-duty trucks, balancing load capacity and cost-effectiveness. Aerospace applications, however, often require lighter materials for fuel efficiency.

For industrial presses, 74550-74845 Bearing’s static radial load rating (138,000 lbf) makes it suitable for high-impact operations. Its inch measurements simplify replacements in older machinery still using imperial units.