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TS (Single Row Tapered Roller Bearings) (Imperial) 31590-31521

TS (Single Row Tapered Roller Bearings) (Imperial) 31590-31521

The 31590-31521 is a single-row tapered roller bearing with a 1.3125″ bore and 3″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 21300 lbf radially and 3800 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 or automotive systems where combined loads are common.

Weighing 1.4 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for industrial use.

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Product Parameters

  • Part Number 31590-31521
  • Brand TFL
  • Interchangeable Timken
  • Size 1.3125" x 3" x 1.1563"
  • Bore Dia 1.3125"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.125"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.9375"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.1563"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.03"
  • Cup Backface ToClear Radius 0.050"
  • Cone Frontface Backing Diameter 1.67"
  • Cone Backface Backing Diameter 1.69"
  • Cup Frontface Backing Diameter 2.87"
  • Cup Backface Backing Diameter 2.60"
  • Cage Cone Frontface Clearance 0.08"
  • Cage Cone Backface Clearance 0.04"
  • Effective Center Location -0.3"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 31590
  • Cup Part Number 31521
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 31500
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 21300 lbf
  • Static Radial Load 24100 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 5520 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 3800 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 1.400 lb

Features

Performance Features of 31590-31521 Bearing

31590-31521 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 Is 31590-31521 Bearing Engineered for Reliability?

31590-31521 Bearing features a single-row tapered roller design, ideal for handling both radial and thrust loads.
The chrome steel construction enhances durability, while the standard radial clearance ensures smooth operation.
Its effective center location of -0.3″ optimises load distribution, improving overall reliability.
With an ABEC-1 rating, it balances precision and cost-effectiveness.

Built for Durability: 31590-31521 Bearing

31590-31521 Bearing’s tapered roller design provides excellent load-carrying capacity and long service life.
The chrome steel components resist wear, making it suitable for heavy-duty applications.
Its standard cup type simplifies installation, reducing downtime during maintenance.
Operating within a wide temperature range, it remains reliable in challenging conditions.

Steel vs Ceramic Bearings: Strengths of 31590-31521 Bearing

31590-31521 Bearing uses chrome steel for both rollers and rings, offering a cost-effective solution with good durability.
Its static radial load capacity of 24,100 lbf ensures stability under heavy loads.
The steel cage provides robust support while maintaining proper roller spacing.
With lubrication required, it offers predictable performance across its temperature range.

Application

Industrial Uses of 31590-31521 Bearing
31590-31521 Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively.
The imperial sizing makes it a straightforward replacement for Timken bearings in North American industrial applications.
Its chrome steel construction ensures durability even in demanding environments with frequent load changes.

How Does 31590-31521 Bearing Improve Performance?
In automotive wheel hubs, 31590-31521 Bearing provides stable support for both radial and thrust loads during cornering.
The standard radial clearance offers reliable performance without requiring frequent adjustments.
Steel cage construction maintains proper roller spacing for smooth operation at various speeds.

Built for Heavy-Duty Use: 31590-31521 Bearing
31590-31521 Bearing excels in mining equipment where its 21,300 lbf dynamic radial load capacity handles rough conditions.
The open design simplifies lubrication maintenance during extended service intervals.
Temperature resistance up to 110°C makes it suitable for applications near heat sources like industrial furnaces.

Automotive vs Industrial: Applications of 31590-31521 Bearing
In truck differentials, 31590-31521 Bearing manages thrust from gear meshing while supporting axle loads.
For factory conveyors, its ABEC-1 precision balances cost and performance for moderate-speed operations.
The 1.4 lb weight provides sturdy construction without excessive bulk for most mechanical systems.

Q&A

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