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TS (Single Row Tapered Roller Bearings) (Imperial) 3581-3520

TS (Single Row Tapered Roller Bearings) (Imperial) 3581-3520

The 3581-3520 is a single-row tapered roller bearing with a 1.375″ bore and 3.3125″ outer diameter, crafted from durable chrome steel. It handles combined loads up to 25500 lbf radially and 3460 lbf in 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 heavy-duty machinery or automotive systems where combined loads are common.

Weighing 1.8 lb, it’s sturdy yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for industrial use. The ABEC-1 rating ensures consistent performance under standard conditions.

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Product Parameters

  • Part Number 3581-3520
  • Brand TFL
  • Interchangeable Timken
  • Size 1.375" x 3.3125" x 1.1875"
  • Bore Dia 1.375"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.3125"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.216"
  • 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 1.69"
  • Cone Backface Backing Diameter 1.95"
  • Cup Frontface Backing Diameter 3.15"
  • Cup Backface Backing Diameter 2.91"
  • Cage Cone Frontface Clearance 0.05"
  • Cage Cone Backface Clearance 0.07"
  • Effective Center Location -0.4"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 3581
  • Cup Part Number 3520
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 3500
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 25500 lbf
  • Static Radial Load 30100 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 6610 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 3460 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 1.8 lb

Features

How Is 3581-3520 Bearing Engineered for Reliability?

3581-3520 Bearing is constructed with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 25,500 lbf, ensuring dependable performance in heavy-duty applications.

The steel cage maintains roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs reliably in various environments.

The open design simplifies lubrication, making maintenance straightforward and cost-effective.
Its standard radial clearance options provide flexibility for different operational needs.

Application

Industrial Uses of 3581-3520 Bearing
3581-3520 Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in tough working conditions.

What Makes 3581-3520 Bearing a Preferred Choice?
In automotive applications, 3581-3520 Bearing fits well in wheel hubs and differential systems, thanks to its precise imperial sizing. Its open design allows for easy lubrication, extending service life in high-mileage scenarios.

Built for Heavy-Duty Use: 3581-3520 Bearing
This bearing excels in industrial fans and conveyor systems, where its dynamic radial load capacity keeps operations smooth. The steel cage adds extra strength, making it reliable for continuous use.

Automotive vs Aerospace: Applications of 3581-3520 Bearing
While 3581-3520 Bearing is popular in truck axles, its precision also suits aerospace landing gear components. The ABEC-1 rating ensures consistent performance across different environments.

Perfect Fit for Automation: 3581-3520 Bearing
In robotic arms and assembly line equipment, 3581-3520 Bearing offers stable rotation under varying loads. Its standard radial clearance provides flexibility for different automation needs.

Q&A

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