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TS (Single Row Tapered Roller Bearings) (Imperial) 18780-18721

TS (Single Row Tapered Roller Bearings) (Imperial) 18780-18721

The 18780-18721 is a single-row tapered roller bearing with a 1.8125″ bore and 3.28″ outer diameter, crafted from durable chrome steel. It handles combined loads up to 12300 lbf radially and 2210 lbf thrust, making it versatile for various applications.

Its open design allows for easy lubrication, while the steel cage ensures reliable performance. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is interchangeable with Timken bearings, offering a practical replacement option. Ideal for use in gearboxes, axles, or industrial machinery where combined loads are common.

Weighing just 0.9 lb, it’s lightweight yet robust for its size. Compliant with RoHS and REACH standards for safe and reliable use.

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Product Parameters

  • Part Number 18780-18721
  • Brand TFL
  • Interchangeable Timken
  • Size 1.8125" x 3.28" x 0.6876"
  • Bore Dia 1.8125"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.28"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 0.6875"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.5313"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 0.6876"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.09"
  • Cup Backface ToClear Radius 0.03"
  • Cone Frontface Backing Diameter 2.05"
  • Cone Backface Backing Diameter 2.2"
  • Cup Frontface Backing Diameter 3.13"
  • Cup Backface Backing Diameter 3.03"
  • Cage Cone Frontface Clearance 0.09"
  • Cage Cone Backface Clearance 0.02"
  • Effective Center Location -0.03"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 18780
  • Cup Part Number 18721
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 18700
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 12300 lbf
  • Static Radial Load 15200 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 3190 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 2210 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 0.9 lb

Features

How Is 18780-18721 Bearing Engineered for Reliability?

18780-18721 Bearing features chrome steel rings and rollers, ensuring strong resistance to combined loads.
Its dynamic radial load capacity reaches 12,300 lbf, making it suitable for demanding applications.

The tapered roller design provides effective load distribution, reducing wear and extending service life.
With a temperature range of -30° to 110°C, it performs reliably in various operating conditions.

18780-18721 Bearing’s steel cage keeps rollers aligned, maintaining smooth operation under stress.
Its standard radial clearance options offer flexibility for different installation needs.

Application

Industrial Uses of 18780-18721 Bearing
18780-18721 Bearing works well in heavy machinery like construction equipment, where its tapered roller design handles combined loads efficiently. The chrome steel construction ensures durability even in tough conditions.

In automotive applications, 18780-18721 Bearing fits perfectly in wheel hubs and differential systems, providing reliable performance. Its imperial sizing makes it a common choice for American-made vehicles.

For conveyor systems, 18780-18721 Bearing’s open design allows easy lubrication, reducing downtime. The steel cage adds extra strength, making it suitable for continuous operation.

Where Is 18780-18721 Bearing Used?
18780-18721 Bearing is often seen in agricultural machinery, supporting components like gearboxes and PTO shafts. Its ABEC-1 rating ensures consistent performance under varying loads.

The bearing also finds use in industrial fans, where its standard radial clearance helps maintain smooth rotation. Temperature resistance up to 110°C makes it adaptable to different environments.

Built for Heavy-Duty Use: 18780-18721 Bearing
18780-18721 Bearing excels in mining equipment, where its dynamic radial load capacity of 12300 lbf is crucial. The tapered rollers distribute stress evenly, extending service life.

In material handling systems, this bearing’s compatibility with Timken models simplifies replacements. Its inch measurements align with many North American industrial standards.

Automotive vs Aerospace: Applications of 18780-18721 Bearing
In automotive settings, 18780-18721 Bearing supports drivetrain components with its combined load capability. The static radial load rating of 15200 lbf ensures reliability.

For aerospace ground equipment, this bearing’s temperature range suits various operational conditions. However, its ABEC-1 rating makes it more common in industrial than high-precision aviation uses.

Q&A

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