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TS (Single Row Tapered Roller Bearings) (Imperial) 3877-3821

TS (Single Row Tapered Roller Bearings) (Imperial) 3877-3821

The 3877-3821 is a single-row tapered roller bearing with a 1.625″ 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 simplifies 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 industrial machinery or automotive systems where combined loads are common.

Weighing 1.8 lb, it balances strength and portability. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number 3877-3821
  • Brand TFL
  • Interchangeable Timken
  • Size 1.625" x 3.375" x 1.1875"
  • Bore Dia 1.625"
  • 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 1.98"
  • Cone Backface Backing Diameter 2.24"
  • 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 3877
  • 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 1.8 lb

Features

How Is 3877-3821 Bearing Engineered for Reliability?

3877-3821 Bearing features chrome steel rings and rollers, providing excellent resistance to combined loads.
Its dynamic radial load capacity reaches 27,900 lbf, ensuring dependable performance in various applications.
The steel cage maintains proper roller alignment, reducing friction and extending operational life.
With a standard radial clearance, it offers flexibility for different installation requirements.

What Makes 3877-3821 Bearing Suitable for High-Temperature Applications?

3877-3821 Bearing operates effectively within a temperature range of -30° to 110°C, making it versatile for diverse environments.
The chrome steel construction ensures durability and resistance to thermal expansion.
Its open design allows for easy lubrication, maintaining smooth operation under varying conditions.
The bearing’s robust build ensures consistent performance even in demanding settings.

Built for Durability: 3877-3821 Bearing

3877-3821 Bearing is designed with a single-row tapered roller construction, ideal for handling combined loads.
The chrome steel components enhance wear resistance, prolonging the bearing’s service life.
Its standard radial clearance and ABEC-1 rating ensure reliable precision in various applications.
With a static radial load capacity of 33,200 lbf, it delivers strong performance under heavy loads.

Application

Industrial Uses of 3877-3821 Bearing
3877-3821 Bearing is commonly used in heavy machinery, such as construction equipment and agricultural vehicles, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability in tough working conditions.

In automotive applications, 3877-3821 Bearing fits well in wheel hubs and differential systems, providing reliable performance under radial and thrust loads. Its imperial sizing makes it a popular choice for North American vehicle models.

For industrial conveyor systems, 3877-3821 Bearing’s open design allows for easy lubrication, extending its service life in high-load environments. The steel cage adds extra strength, making it suitable for continuous operation.

Where Is 3877-3821 Bearing Used?
3877-3821 Bearing can be found in mining equipment, where its ability to handle heavy radial and thrust loads is essential. The standard radial clearance ensures smooth operation even under demanding conditions.

In railway applications, 3877-3821 Bearing supports axle boxes, offering stability and reducing wear over time. Its compatibility with Timken designs makes it a versatile option for maintenance and replacements.

Built for Heavy-Duty Use: 3877-3821 Bearing
3877-3821 Bearing is ideal for gearboxes in industrial settings, where its tapered rollers distribute loads evenly. The ABEC-1 rating ensures consistent performance without unnecessary precision costs.

For pump systems, 3877-3821 Bearing’s chrome steel rollers resist wear, even in corrosive environments. The open seal design simplifies maintenance, reducing downtime in critical applications.

Automotive vs Aerospace: Applications of 3877-3821 Bearing
In automotive systems, 3877-3821 Bearing is often used in drivetrains, where its combined load capacity improves efficiency. The imperial measurements align with standard US automotive parts.

For aerospace ground equipment, 3877-3821 Bearing provides reliable support in loading mechanisms. Its temperature range suits various operational environments, from cold storage to hot tarmacs.

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