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TS (Single Row Tapered Roller Bearings) (Imperial) 3191-3120

TS (Single Row Tapered Roller Bearings) (Imperial) 3191-3120

The 3191-3120 is a single-row tapered roller bearing with a 1.1875″ bore and 2.8593″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 21300 lbf radially and 3140 lbf thrust, making it versatile for various applications.

Its open design allows easy lubrication, while the steel cage ensures durability under heavy use. 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 machinery like gearboxes or axles where combined loads are common.

Weighing 1.3 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and eco-friendly use.

The standard radial clearance ensures easy installation, while the ABEC-1 rating provides consistent performance. Suitable for industrial settings requiring dependable load handling.

Its tapered roller design distributes loads evenly, reducing wear over time. A practical choice for maintenance and repair tasks in heavy-duty equipment.

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Product Parameters

  • Part Number 3191-3120
  • Brand TFL
  • Interchangeable Timken
  • Size 1.1875" x 2.8593" x 1.1875"
  • Bore Dia 1.1875"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 2.8593"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.181"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.9375"
  • 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 1.52"
  • Cone Backface Backing Diameter 1.75"
  • Cup Frontface Backing Diameter 2.68"
  • Cup Backface Backing Diameter 2.40"
  • Cage Cone Frontface Clearance 0.06"
  • Cage Cone Backface Clearance 0.03"
  • Effective Center Location -0.4"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 3191
  • Cup Part Number 3120
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 3100
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 21300 lbf
  • Static Radial Load 22800 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 5520 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 3140 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 1.3 lb

Features

Performance Features of 3191-3120 Bearing

3191-3120 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 21,300 lbf, ensuring reliable performance in various 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 diverse environments.

How Does 3191-3120 Bearing Reduce Friction?

3191-3120 Bearing’s tapered roller design minimises friction, promoting smooth and efficient operation.
The chrome steel construction ensures durability while maintaining low wear rates.
Its standard radial clearance allows for optimal performance under different load conditions.
With a dynamic thrust rating of 3,140 lbf, it handles combined loads effectively.

Engineered for Precision: 3191-3120 Bearing

3191-3120 Bearing features precise dimensions, with bore and outer diameter tolerances tightly controlled.
The single row construction provides stability and accuracy in combined load applications.
Its ABEC-1 rating ensures consistent performance for general precision needs.
The standard cup type design simplifies installation and maintenance procedures.

Steel vs Ceramic Bearings: Strengths of 3191-3120 Bearing

3191-3120 Bearing uses chrome steel for both rings and rollers, offering excellent strength and durability.
This material choice provides good resistance to wear while maintaining cost-effectiveness.
The bearing’s dynamic radial rating of 5,520 lbf (C90) ensures long service life.
Its standard lubrication requirement makes maintenance straightforward and reliable.

Application

Industrial Uses of 3191-3120 Bearing
3191-3120 Bearing is commonly used in heavy machinery like construction equipment, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in demanding environments.

In automotive applications, 3191-3120 Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its imperial sizing makes it a convenient choice for older or custom vehicle models.

For industrial conveyor systems, 3191-3120 Bearing’s open design allows for easy lubrication, reducing maintenance downtime. The steel cage adds stability, making it suitable for continuous operation.

Where Is 3191-3120 Bearing Used?
3191-3120 Bearing is often found in agricultural machinery, such as tractors and harvesters, where its robust design withstands rough conditions. The tapered rollers distribute loads evenly, extending service life.

In mining equipment, 3191-3120 Bearing’s ability to handle high radial and thrust loads makes it a reliable component. The standard radial clearance ensures smooth operation even under heavy stress.

Built for Heavy-Duty Use: 3191-3120 Bearing
3191-3120 Bearing excels in forestry equipment, where its combined load capacity is essential for log loaders and chippers. The chrome steel rollers resist wear, even in abrasive environments.

For railway applications, 3191-3120 Bearing’s temperature tolerance makes it suitable for brake systems and axles. Its ABEC-1 rating ensures consistent performance without unnecessary precision costs.

Automotive vs Aerospace: Applications of 3191-3120 Bearing
In automotive settings, 3191-3120 Bearing is ideal for drivetrain components, offering a balance of strength and affordability. The imperial measurements simplify replacements in older vehicles.

For aerospace ground support equipment, 3191-3120 Bearing provides reliable performance in load-handling systems. Its standard lubrication requirements make maintenance straightforward for ground crews.

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