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

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

The 386AX-384XD is a double-row tapered roller bearing with a 1.875″ bore and 3.937″ outer diameter, built from sturdy chrome steel. It handles combined loads well, with a dynamic radial load capacity of 35600 lbf and a two-row dynamic radial rating of 9230 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, making it versatile for various conditions.

This model is part of the 385 series and comes with standard radial clearance, though options like C3, C4, or C5 are available. It’s ABEC-1 rated, balancing precision and affordability.

Ideal for heavy-duty applications like industrial gearboxes or axle systems, where combined loads are common. Weighing 6.130 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number 386AX-384XD
  • Brand TFL
  • Size 1.875" x 3.937" x 0.864"
  • Bore Dia 1.875"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.937"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 3.764"
  • 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 4.1389"
  • 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 384XD
  • 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 6.130 lb

Features

How Is 386AX-384XD Bearing Engineered for Reliability?

386AX-384XD Bearing features a double-row tapered roller design, providing robust support for combined radial and thrust loads.
Its chrome steel construction ensures durability and resistance to wear in demanding conditions.
With a dynamic radial load capacity of 35,600 lbf, it handles heavy-duty applications with ease.
The standard radial clearance options offer flexibility for various operational needs.

What Makes 386AX-384XD Bearing Suitable for High-Temperature Applications?

386AX-384XD Bearing operates reliably in temperatures ranging from -30° to 110°C, making it versatile for different environments.
The chrome steel rollers and rings maintain performance under thermal stress.
Its open design allows for effective lubrication, reducing friction and heat buildup.
This ensures consistent operation even in challenging conditions.

Built for Durability: 386AX-384XD Bearing

386AX-384XD Bearing’s double-row construction enhances load distribution, extending its service life.
The steel cage keeps rollers aligned, minimising wear and improving efficiency.
With a dynamic radial rating of 9,230 lbf for two rows, it delivers reliable performance.
Its precise tolerances ensure smooth operation and easy integration into various systems.

Steel vs Ceramic Bearings: Strengths of 386AX-384XD Bearing

386AX-384XD Bearing uses chrome steel for both rollers and rings, offering excellent strength and wear resistance.
This material choice ensures it can handle high dynamic loads without compromising performance.
The steel cage provides additional durability, making it a practical choice for heavy-duty applications.
Its design balances cost-effectiveness with long-term reliability.

Why Choose 386AX-384XD Bearing for Precision Tasks?

386AX-384XD Bearing’s precise tolerances and ABEC-1 rating ensure consistent performance in precision applications.
The tapered roller design reduces friction, enabling smooth and accurate operation.
Its dynamic thrust rating of 3,210 lbf supports demanding tasks with ease.
The open seal type allows for custom lubrication, enhancing its adaptability.

Application

Industrial Uses of 386AX-384XD Bearing
386AX-384XD Bearing is commonly used in heavy machinery like construction equipment, where its double-row design handles combined radial and thrust loads efficiently. The chrome steel construction ensures durability in demanding environments.

In automotive applications, 386AX-384XD Bearing supports wheel hubs and differential systems, providing reliable performance under varying loads. Its imperial sizing makes it a fit for many North American vehicle models.

For industrial automation, 386AX-384XD Bearing is ideal for conveyor systems and robotic arms, where precision and load capacity are key. The open seal design allows for easy lubrication and maintenance.

Where Is 386AX-384XD Bearing Used?
You’ll often find 386AX-384XD Bearing in agricultural machinery, such as tractors and harvesters, where its tapered roller design manages heavy loads smoothly. The steel cage adds extra strength for long-term use.

In mining equipment, 386AX-384XD Bearing excels in crushers and screens, thanks to its high dynamic radial load rating. The standard radial clearance ensures consistent performance even in dusty conditions.

Built for Heavy-Duty Use: 386AX-384XD Bearing
386AX-384XD Bearing is a go-to choice for forestry machinery like log splitters, where its combined load capacity and durability shine. The ABEC-1 rating balances precision and cost-effectiveness.

In material handling systems, 386AX-384XD Bearing supports heavy loads in forklifts and cranes. Its temperature range of -30° to 110°C ensures reliability in various climates.

Automotive vs Aerospace: Applications of 386AX-384XD Bearing
In automotive settings, 386AX-384XD Bearing is trusted for axle systems, offering stability under stress. Its two-row design distributes loads evenly for smoother operation.

For aerospace ground equipment, 386AX-384XD Bearing handles the rigorous demands of aircraft tugs and loaders. The chrome steel rollers resist wear even with frequent use.

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