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TS (Single Row Tapered Roller Bearings) (Imperial) 387-383

TS (Single Row Tapered Roller Bearings) (Imperial) 387-383

The 387-383 is a single-row tapered roller bearing with a 2.25″ bore and 3.937″ outer diameter, crafted from sturdy chrome steel. It handles combined loads, with a dynamic radial load capacity of 24200 lbf and a thrust rating of 3810 lbf.

Its open design allows for easy lubrication, while the steel cage ensures durability. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is interchangeable with Timken bearings, making it a practical choice for replacements. Ideal for heavy-duty applications like truck axles or industrial gearboxes where combined loads are common.

Weighing 1.5 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a reliable option for various industrial uses.

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Product Parameters

  • Part Number 387-383
  • Brand TFL
  • Interchangeable Timken
  • Size 2.25" x 3.937" x 0.8268"
  • Bore Dia 2.25"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.937"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 0.864"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.8268"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 0.8268"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.09"
  • Cup Backface ToClear Radius 0.08"
  • Cone Frontface Backing Diameter 2.48"
  • Cone Backface Backing Diameter 2.64"
  • Cup Frontface Backing Diameter 3.70"
  • Cup Backface Backing Diameter 3.50"
  • Cage Cone Frontface Clearance 0.11"
  • Cage Cone Backface Clearance 0.03"
  • Effective Center Location -0.12"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 387
  • Cup Part Number 383
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 385
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 24200 lbf
  • Static Radial Load 24100 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 6280 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 3810 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 1.500 lb

Features

Performance Features of 387-383 Bearing

387-383 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 24,200 lbf, ensuring reliable 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 well in various environments.

How Does 387-383 Bearing Reduce Friction?

387-383 Bearing’s tapered roller design minimises friction, allowing smooth operation under combined loads.
The chrome steel construction ensures durability while maintaining efficiency.
Its standard radial clearance options provide flexibility for different applications.
The steel cage helps keep rollers in place, further reducing wear.

Engineered for Precision: 387-383 Bearing

387-383 Bearing features precise dimensions with tight tolerances, ensuring accurate performance.
The ABEC-1 rating confirms its reliability for various industrial uses.
Its effective centre location design enhances stability during operation.
The bearing’s construction allows it to handle both radial and thrust loads effectively.

Steel vs Ceramic Bearings: Strengths of 387-383 Bearing

387-383 Bearing uses chrome steel for both rings and rollers, offering excellent strength and durability.
This material choice provides good resistance to wear and fatigue over time.
The bearing’s dynamic thrust rating of 3,810 lbf ensures reliable performance.
Its standard lubrication requirement makes maintenance straightforward.

Application

Industrial Uses of 387-383 Bearing
The 387-383 Bearing is commonly used in heavy machinery, such as construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. Its chrome steel construction ensures durability in tough working conditions.

In automotive applications, 387-383 Bearing fits well in wheel hubs and differential systems, providing reliable performance under radial and thrust loads. The inch sizing makes it a convenient choice for American-made vehicles.

For industrial conveyor systems, 387-383 Bearing’s open design allows for easy lubrication, extending its service life in high-load scenarios. The steel cage adds stability, making it suitable for continuous operation.

Where Is 387-383 Bearing Used?
You’ll often find 387-383 Bearing in mining equipment, where its robust design handles harsh environments with ease. The tapered rollers distribute loads evenly, reducing wear over time.

In manufacturing plants, 387-383 Bearing supports machinery like presses and rollers, ensuring smooth operation. Its ABEC-1 rating provides a balance of precision and affordability for general industrial use.

Built for Heavy-Duty Use: 387-383 Bearing
387-383 Bearing excels in applications like truck axles, where its combined load capacity is essential. The standard radial clearance offers flexibility for various installation requirements.

For power transmission systems, 387-383 Bearing’s chrome steel rollers provide consistent performance. The inch measurements ensure compatibility with a wide range of industrial equipment.

Automotive vs Aerospace: Applications of 387-383 Bearing
In automotive settings, 387-383 Bearing is ideal for wheel assemblies, offering durability and load support. Its inch sizing aligns with many vehicle specifications.

For aerospace ground equipment, 387-383 Bearing handles heavy loads in landing gear test rigs. The open design simplifies maintenance, which is crucial for high-availability systems.

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