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TS (Single Row Tapered Roller Bearings) (Imperial) 545112-545139

TS (Single Row Tapered Roller Bearings) (Imperial) 545112-545139

The 545112-545139 is a single-row tapered roller bearing with an 11.25″ bore and 13.9375″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 58,000 lbf radially and 12,600 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 construction equipment where robust performance is needed.

Weighing 13.8 lb, it’s designed for long-lasting use and complies with RoHS and REACH standards. The standard radial clearance ensures versatility in various setups.

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Product Parameters

  • Part Number 545112-545139
  • Brand TFL
  • Interchangeable Timken
  • Size 11.25" x 13.9375" x 1.3125"
  • Bore Dia 11.25"
  • Bore Dia Tolerance +0.001" to 0
  • Outer Dia 13.9375"
  • Outer Dia Tolerance +0.002" to 0
  • Cone Width 1.25"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.875"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.3125"
  • Width Tolerance +0.014" to -0.01"
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 12.99"
  • Cone Backface Backing Diameter 11.89"
  • Cup Frontface Backing Diameter 13.62"
  • Cup Backface Backing Diameter 13.31"
  • Cage Cone Frontface Clearance 0.16"
  • Cage Cone Backface Clearance 0.2"
  • Effective Center Location 1.29"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 545112
  • Cup Part Number 545139
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 545000
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 58000 lbf
  • Static Radial Load 134000 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 15000 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 12600 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 13.8 lb

Features

Performance Features of 545112-545139 Bearing

545112-545139 Bearing is built with chrome steel rings and rollers, offering robust performance under combined loads.
Its dynamic radial load capacity reaches 58,000 lbf, making it suitable for heavy-duty applications.

The tapered roller design ensures efficient load distribution, reducing stress on individual components.
With a static radial load of 134,000 lbf, it provides reliable stability in demanding conditions.

545112-545139 Bearing operates within a temperature range of -30° to 110°C, ensuring versatility.
The steel cage maintains roller alignment, enhancing durability and extending service life.

Standard radial clearance options allow for flexibility in various operational environments.
Its ABEC-1 rating ensures consistent performance for precision applications.

Application

Industrial Uses of 545112-545139 Bearing
This bearing is commonly used in heavy machinery like mining equipment and construction gear, where its tapered roller design handles combined loads efficiently. The chrome steel construction ensures durability in tough environments.

In automotive applications, 545112-545139 Bearing fits well in truck wheel hubs and differential systems, providing reliable performance under heavy radial and thrust loads. Its inch sizing makes it compatible with many American vehicles.

For industrial fans and pumps, 545112-545139 Bearing’s open design allows for easy lubrication, extending service life in continuous operation. The steel cage adds stability during high-speed rotations.

Where Is 545112-545139 Bearing Used?
You’ll often find this bearing in agricultural machinery, such as tractors and harvesters, where its robust design withstands dirt and debris. The standard radial clearance suits varying operational conditions.

In conveyor systems, 545112-545139 Bearing supports heavy loads while maintaining smooth movement. Its ABEC-1 rating ensures consistent performance without over-engineering for general industrial use.

Built for Heavy-Duty Use: 545112-545139 Bearing
This bearing excels in railway applications, particularly in axle boxes, where its tapered rollers manage both radial and axial forces. The chrome steel rollers resist wear over long distances.

For forestry equipment like log splitters, 545112-545139 Bearing’s high static load capacity ensures reliability. The inch measurements simplify replacements in older machinery.

Automotive vs Aerospace: Applications of 545112-545139 Bearing
In trucks and buses, this bearing handles wheel loads effectively, while its weight limits aerospace use. The dynamic thrust rating suits frequent stop-start cycles in ground transport.

For industrial presses, 545112-545139 Bearing’s combined load capacity makes it a practical choice. The temperature range covers most workshop conditions without special modifications.

Q&A

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