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TS (Single Row Tapered Roller Bearings) (Imperial) 3872A-3820

TS (Single Row Tapered Roller Bearings) (Imperial) 3872A-3820

The 3872A-3820 is a single-row tapered roller bearing with a 1.375″ bore and 3.375″ outer diameter, crafted from sturdy chrome steel. It manages combined loads up to 27900 lbf radially and 4980 lbf thrust, suitable for demanding 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, making it versatile for various 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 2lb, it balances strength and portability. Compliant with RoHS and REACH standards, it’s a safe and practical choice for industrial use.

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Product Parameters

  • Part Number 3872A-3820
  • Brand TFL
  • Interchangeable Timken
  • Size 1.375" x 3.375" x 1.1875"
  • Bore Dia 1.375"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.375"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.1875"
  • 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 0.03"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 1.81"
  • Cone Backface Backing Diameter 1.85"
  • Cup Frontface Backing Diameter 3.23"
  • Cup Backface Backing Diameter 2.87"
  • Cage Cone Frontface Clearance 0.11"
  • Cage Cone Backface Clearance 0.04"
  • Effective Center Location -0.32"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 3872A
  • Cup Part Number 3820
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 3800
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 27900 lbf
  • Static Radial Load 33200 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 7240 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 4980 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 2 lb

Features

Performance Features of 3872A-3820 Bearing

3872A-3820 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 27,900 lbf, ensuring reliable performance in demanding conditions.

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

3872A-3820 Bearing requires lubrication, which helps maintain smooth operation over time.
Its standard radial clearance makes it versatile for different applications.

Application

Industrial Uses of 3872A-3820 Bearing
3872A-3820 Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads efficiently. The chrome steel construction ensures durability even in rugged conditions.

In automotive applications, 3872A-3820 Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its imperial sizing makes it a straightforward replacement for many North American vehicle models.

For industrial conveyor systems, 3872A-3820 Bearing’s open design simplifies lubrication and maintenance. The standard radial clearance offers flexibility for different operational requirements.

What Makes 3872A-3820 Bearing a Preferred Choice?
3872A-3820 Bearing’s steel cage and chrome steel rollers make it suitable for high-load scenarios like mining equipment. The ABEC-1 rating ensures consistent performance without over-engineering.

In power transmission systems, 3872A-3820 Bearing supports shafts and gears with its balanced load capacity. The temperature range of -30° to 110°C covers most industrial environments.

Built for Heavy-Duty Use: 3872A-3820 Bearing
3872A-3820 Bearing excels in applications like forklifts and cranes, where its static radial load capacity of 33200 lbf is crucial. The tapered rollers distribute stress evenly for longer service life.

For farm machinery, 3872A-3820 Bearing’s resistance to wear and tear reduces downtime. Its compatibility with Timken models adds to its versatility in repairs and replacements.

Automotive vs Aerospace: Applications of 3872A-3820 Bearing
In automotive settings, 3872A-3820 Bearing is often found in drivetrains, offering a balance of strength and precision. The inch measurements align with many US-made components.

For aerospace ground support equipment, 3872A-3820 Bearing’s reliability under dynamic loads makes it a practical choice. The standard lubrication requirement is easy to manage in routine maintenance.

Q&A

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