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TS (Single Row Tapered Roller Bearings) (Imperial) 3876-3821

TS (Single Row Tapered Roller Bearings) (Imperial) 3876-3821

The 3876-3821 is a single-row tapered roller bearing with a 1.5″ bore and 3.375″ outer diameter, crafted from robust chrome steel. It handles combined loads up to 27900 lbf radially and 4980 lbf in thrust, making it versatile for various applications.

Its open design and steel cage ensure durability, while the tapered rollers provide smooth operation under heavy loads. The bearing requires regular lubrication and works in temperatures from -30°C to 110°C.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for industrial machinery, gearboxes, or automotive systems where combined loads are common.

Weighing 1.9 lb, it’s sturdy yet manageable for its size. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

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Product Parameters

  • Part Number 3876-3821
  • Brand TFL
  • Interchangeable Timken
  • Size 1.5" x 3.375" x 1.1875"
  • Bore Dia 1.5"
  • 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 0.14"
  • Cup Backface ToClear Radius 0.050"
  • Cone Frontface Backing Diameter 1.91"
  • Cone Backface Backing Diameter 2.17"
  • Cup Frontface Backing Diameter 3.23"
  • Cup Backface Backing Diameter 2.95"
  • 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 3876
  • Cup Part Number 3821
  • 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 1.900 lb

Features

Performance Features of 3876-3821 Bearing

3876-3821 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 27,900 lbf, making it suitable for heavy-duty applications.
The steel cage ensures proper roller alignment, enhancing durability and reducing friction.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

How Is 3876-3821 Bearing Engineered for Reliability?

3876-3821 Bearing features a single row tapered roller design, optimised for combined load handling.
The chrome steel construction provides excellent wear resistance, extending its service life.
Its standard radial clearance ensures smooth operation, while the open design simplifies maintenance.
With an ABEC-1 rating, it balances precision and cost-effectiveness.

Built for Durability: 3876-3821 Bearing

3876-3821 Bearing’s tapered roller design distributes loads evenly, reducing stress on components.
The steel cage maintains roller positioning, preventing misalignment during operation.
Its static radial load capacity of 33,200 lbf ensures reliability in demanding environments.
The bearing operates efficiently within a wide temperature range, from -30° to 110°C.

Steel vs Ceramic Bearings: Strengths of 3876-3821 Bearing

3876-3821 Bearing uses chrome steel for both rings and rollers, offering excellent strength and durability.
This material choice provides better cost-efficiency compared to ceramic alternatives in many applications.
The bearing’s dynamic thrust rating of 4,980 lbf ensures reliable performance under axial loads.
Its standard radial clearance allows for smooth operation in various industrial settings.

Application

Industrial Uses of 3876-3821 Bearing
3876-3821 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, 3876-3821 Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its imperial sizing makes it a straightforward replacement for Timken bearings in many vehicles.

For industrial conveyor systems, 3876-3821 Bearing’s open design allows for easy lubrication, extending service life in continuous operation. The standard radial clearance offers flexibility for different load conditions.

Where Is 3876-3821 Bearing Used?
3876-3821 Bearing is often found in agricultural machinery, supporting components like gearboxes and PTO shafts. Its robust design handles the shocks and vibrations typical in farming equipment.

In mining operations, 3876-3821 Bearing’s high dynamic load capacity makes it suitable for crushers and screens. The steel cage adds extra strength, ensuring longevity in abrasive conditions.

Built for Heavy-Duty Use: 3876-3821 Bearing
3876-3821 Bearing excels in forestry equipment, where it manages heavy loads and rough terrain. The tapered rollers distribute stress evenly, reducing wear over time.

For railway applications, 3876-3821 Bearing’s precision engineering ensures smooth operation in axle boxes. Its temperature tolerance range makes it reliable in varying climates.

Automotive vs Aerospace: Applications of 3876-3821 Bearing
In automotive systems, 3876-3821 Bearing is a go-to for drivetrain components, offering a balance of strength and precision. The ABEC-1 rating meets the needs of most road vehicles.

For aerospace ground equipment, 3876-3821 Bearing provides dependable performance in tow tractors and loaders. Its compliance with RoHS and REACH standards ensures environmental safety.

Q&A

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