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

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

The 387-383X 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 up to 24200 lbf and is suitable for temperatures from -30°C to 110°C.

Its open design allows for easy lubrication, while the steel cage ensures durability. The bearing is interchangeable with Timken models, making it a practical choice for replacements.

With a standard radial clearance and ABEC-1 rating, it offers reliable performance for various applications. Ideal for use in gearboxes, axles, or industrial machinery where combined loads are common.

Weighing 1.7 lb, it’s a robust yet manageable option for heavy-duty tasks. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number 387-383X
  • Brand TFL
  • Interchangeable Timken
  • Size 2.25" x 3.937" x 1"
  • 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 0.875"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.09"
  • Cup Backface ToClear Radius 0.050"
  • Cone Frontface Backing Diameter 2.48"
  • Cone Backface Backing Diameter 2.64"
  • Cup Frontface Backing Diameter 3.68"
  • 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 383X
  • 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 1.7 lb

Features

How Does 387-383X Bearing Handle Combined Loads?

387-383X Bearing is built with chrome steel rings and rollers, offering strong resistance to both radial and thrust loads.
Its dynamic radial load capacity reaches 24,200 lbf, ensuring reliable performance in demanding conditions.
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.

Why Choose 387-383X Bearing for Precision Tasks?

387-383X Bearing features precise cone and cup dimensions, ensuring accurate alignment for combined load applications.
The chrome steel construction provides durability, while the open design allows for easy lubrication.
Its ABEC-1 rating ensures consistent performance in precision machinery.
The standard radial clearance option makes it versatile for different installation needs.

Engineered for Reliability: 387-383X Bearing

387-383X Bearing’s single-row tapered roller design efficiently manages combined loads with minimal friction.
The chrome steel rollers and rings enhance wear resistance, prolonging service life.
Its dynamic thrust rating of 3,810 lbf ensures stable performance under heavy loads.
The steel cage keeps rollers securely in place, reducing maintenance requirements.

Steel vs Ceramic Bearings: Strengths of 387-383X Bearing

387-383X Bearing uses chrome steel for both rollers and rings, providing excellent strength and durability.
This material choice ensures reliable performance under high radial and thrust loads.
The steel cage design further enhances stability and reduces operational noise.
With a weight of 1.7 lb, it offers a robust yet manageable solution for industrial applications.

Performance Features of 387-383X Bearing

387-383X Bearing’s tapered roller design efficiently distributes loads, reducing stress on individual components.
The chrome steel construction resists wear, maintaining performance over extended periods.
Its dynamic radial rating of 6,280 lbf (C90) ensures long-term reliability.
The standard radial clearance option provides flexibility for various installation requirements.

Application

Industrial Uses of 387-383X Bearing
387-383X Bearing is commonly used in heavy machinery, such as construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. The inch sizing makes it a good fit for North American industrial standards.

In automotive applications, 387-383X Bearing works well in wheel hubs and differential systems, providing reliable performance under varying loads. Its chrome steel construction ensures durability even in demanding driving conditions.

For conveyor systems, 387-383X Bearing’s open design simplifies maintenance, while its standard radial clearance accommodates slight misalignments. The steel cage adds extra strength for continuous operation.

Where Is 387-383X Bearing Used?
387-383X Bearing finds its place in mining equipment, where its robust design withstands harsh environments. The tapered rollers distribute loads evenly, reducing wear over time.

In power transmission systems, 387-383X Bearing supports shafts and gears, ensuring smooth rotation. Its ABEC-1 rating offers a balance of precision and affordability for general industrial use.

Built for Heavy-Duty Use: 387-383X Bearing
387-383X Bearing excels in forestry machinery, handling both radial and thrust loads with ease. The chrome steel rollers and rings provide long-lasting performance in tough conditions.

For pump systems, 387-383X Bearing’s standard radial clearance allows for thermal expansion, preventing premature failure. Its steel cage maintains roller alignment under high-speed operation.

Automotive vs Aerospace: Applications of 387-383X Bearing
In automotive settings, 387-383X Bearing is ideal for axle systems, offering reliable load capacity. The inch measurements align with many US-made vehicle components.

For aerospace ground equipment, 387-383X Bearing supports landing gear testing rigs, where precision and durability are key. Its temperature range suits various operational environments.

Q&A

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