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386AX-384DRB TDO (Two-Row Double-Outer Race) (Imperial)

386AX-384DRB TDO (Two-Row Double-Outer Race) (Imperial)

The 386AX-384DRB is a double-row tapered roller bearing with a 1.875″ bore and 4.125″ outer diameter, built from sturdy chrome steel for long-lasting performance. It handles combined loads well, with a dynamic radial load capacity of 35600 lbf and a temperature range of -30°C to 110°C.

Its open design allows for easy lubrication, while the steel cage ensures smooth operation under heavy loads. The bearing is designed for standard radial clearance but can also be ordered in C3, C4, or C5 options for specific needs.

This model is part of the 385 series, offering reliable performance in demanding applications. Ideal for use in industrial machinery or heavy equipment where combined loads are common.

Weighing 4.22 lb, it’s a robust choice for high-load scenarios. Compliant with RoHS and REACH standards, it meets international safety and environmental requirements.

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Product Parameters

  • Part Number 386AX-384DRB
  • Brand TFL
  • Size 1.875" x 4.125" x 0.864"
  • Bore Dia 1.875"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.125"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 1.562"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 0.864"
  • Cone Width Tolerance +0.002" to -0.01
  • Bearing Width Across Cups 1.9369"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.03"
  • Cone Backface Backing Diameter 2.2"
  • Cup Frontface Backing Diameter 3.74"
  • Cage Cone Backface Clearance 0.03"
  • Dynamic Radial Load 35600 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 386AX
  • Cup Part Number 384DRB
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 385
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 5300 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 3210 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 9230 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 4.22 lb

Features

How Does 386AX-384DRB Bearing Handle Combined Loads?

386AX-384DRB Bearing is built with chrome steel rings and rollers, offering strong resistance to both radial and thrust loads.
Its dynamic radial load capacity reaches 35,600 lbf, ensuring reliable performance in demanding conditions.
The double-row tapered roller design distributes loads evenly, reducing wear and extending service life.
With a temperature range of -30° to 110°C, it performs well in various environments.

Why Choose 386AX-384DRB Bearing for Heavy-Duty Applications?

386AX-384DRB Bearing features a steel cage that keeps the rollers aligned, minimising friction and wear.
The chrome steel construction provides excellent durability, even under heavy combined loads.
Its standard radial clearance options allow for flexibility in different applications.
The open design simplifies lubrication, ensuring smooth operation over time.

Structural Advantages of 386AX-384DRB Bearing

386AX-384DRB Bearing’s double-row design enhances load capacity while maintaining a compact size.
Precision-engineered tolerances ensure consistent performance and easy installation.
The tapered roller construction efficiently handles both radial and thrust loads.
With ABEC-1 rating, it offers reliable precision for various industrial uses.

Application

Industrial Uses of 386AX-384DRB Bearing
386AX-384DRB Bearing is commonly used in heavy machinery like construction equipment and mining tools, where its double-row design handles combined radial and thrust loads efficiently. The chrome steel construction ensures durability even in demanding environments.
In automotive applications, 386AX-384DRB Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its imperial sizing makes it a preferred choice for North American vehicle manufacturers.
For industrial automation, 386AX-384DRB Bearing supports conveyor systems and robotic arms, where precision and load capacity are key. The open seal design allows for easy lubrication, extending service life in high-use scenarios.

What Makes 386AX-384DRB Bearing a Preferred Choice?
386AX-384DRB Bearing stands out in agricultural machinery, such as tractors and harvesters, due to its ability to withstand harsh conditions. The tapered roller design ensures smooth operation even with heavy loads.
In material handling equipment, 386AX-384DRB Bearing’s high dynamic radial load rating makes it ideal for forklifts and cranes. The steel cage adds extra strength, reducing wear over time.

Built for Heavy-Duty Use: 386AX-384DRB Bearing
386AX-384DRB Bearing is a reliable option for railway applications, where its combined load capacity handles the stresses of railcar axles. The standard radial clearance ensures consistent performance across temperature variations.
For power transmission systems, 386AX-384DRB Bearing’s two-row design provides stability in gearboxes and driveshafts. Its ABEC-1 rating balances precision and cost-effectiveness for general industrial use.

Automotive vs Aerospace: Applications of 386AX-384DRB Bearing
In automotive settings, 386AX-384DRB Bearing is often found in truck axles, offering durability under heavy loads. The inch measurements simplify compatibility with existing designs.
For aerospace ground support equipment, 386AX-384DRB Bearing’s temperature range suits outdoor operations. However, its weight makes it less common in airborne applications compared to lighter alternatives.

Q&A

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