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48393-48320D TDO (Two-Row Double-Outer Race) (Imperial)

48393-48320D TDO (Two-Row Double-Outer Race) (Imperial)

The 48393-48320D is a double-row tapered roller bearing with a 5.375″ bore and 7.5″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 111,000 lbf and works well in temperatures from -30°C to 110°C.

Its open design requires regular lubrication, while the steel cage ensures durability. The bearing offers standard radial clearance, with options for C3, C4, or C5 fits if needed.

This model is part of the 48300 series, featuring a double outer race for balanced load distribution. Ideal for heavy-duty applications like industrial gearboxes or large machinery.

Weighing 15.18 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 48393-48320D
  • Brand TFL
  • Size 5.375" x 7.5" x 1.5625"
  • Bore Dia 5.375"
  • Bore Dia Tolerance +0.001" to 0
  • Outer Dia 7.5"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 2.875"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 1.5625"
  • Cone Width Tolerance +0.002" to -0.01
  • Bearing Width Across Cups 3.3749"
  • Bearing Width Across Cups Tolerance +0.014" to -0.01"
  • Cup Backface ToClear Radius 0.03"
  • Cone Backface Backing Diameter 5.94"
  • Cup Frontface Backing Diameter 7.28"
  • Cage Cone Backface Clearance 0.09"
  • Dynamic Radial Load 111000 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 48393
  • Cup Part Number 48320D
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 48300
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 16500 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 9060 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 28700 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 15.18 lb

Features

How Is 48393-48320D Bearing Engineered for Reliability?

48393-48320D Bearing features a double-row tapered roller design, providing strong resistance to combined radial and thrust loads.
Its chrome steel construction ensures durability, with a dynamic radial load capacity of 111,000 lbf.
The steel cage maintains roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

Structural Advantages of 48393-48320D Bearing

48393-48320D Bearing’s double-row design offers enhanced load distribution, improving stability under heavy loads.
The precision-engineered tapered rollers and chrome steel components ensure smooth operation.
Its standard radial clearance options (C3/C4/C5) allow for flexibility in different applications.
The open seal type facilitates easy lubrication, maintaining optimal performance.

Why Choose 48393-48320D Bearing for Precision Tasks?

48393-48320D Bearing’s ABEC-1 rating ensures consistent precision in demanding applications.
The tapered roller design minimises friction, enhancing efficiency and reducing wear.
With a dynamic radial rating of 28,700 lbf for two rows, it handles heavy loads with ease.
Its robust construction and standard lubrication requirements simplify maintenance.

Application

Industrial Uses of 48393-48320D Bearing
The 48393-48320D Bearing is commonly used in heavy machinery, such as construction equipment and mining rigs, where its double-row design handles combined radial and thrust loads efficiently. Its chrome steel construction ensures durability even in demanding environments.

In automotive applications, 48393-48320D Bearing supports large vehicle components like axles and differentials, providing reliable performance under high stress. The inch sizing makes it a preferred choice for North American and UK-based manufacturers.

For industrial automation, 48393-48320D Bearing’s tapered roller design offers smooth operation in conveyor systems and robotic arms. The open seal type allows for easy lubrication, extending its service life in continuous-use scenarios.

Where Is 48393-48320D Bearing Used?
You’ll often find 48393-48320D Bearing in agricultural machinery, where its robust design handles the uneven loads of tractors and harvesters. The standard radial clearance ensures consistent performance in varying conditions.

In material handling equipment, 48393-48320D Bearing’s high dynamic radial load capacity makes it ideal for forklifts and cranes. The steel cage adds extra strength, preventing deformation under heavy loads.

Built for Heavy-Duty Use: 48393-48320D Bearing
The 48393-48320D Bearing excels in forestry equipment, such as log splitters and sawmills, thanks to its tapered roller construction. Its temperature range of -30° to 110°C ensures reliability in extreme weather.

For railway applications, 48393-48320D Bearing’s double-row design provides stability in freight car wheel assemblies. The ABEC-1 rating guarantees sufficient precision for these high-load scenarios.

Automotive vs Aerospace: Applications of 48393-48320D Bearing
In automotive settings, 48393-48320D Bearing is often used in truck transmissions, where its combined load capacity is crucial. The inch measurements simplify integration with existing systems.

While not typically used in aerospace, 48393-48320D Bearing finds its place in ground support equipment like aircraft tugs. Its durability and ease of maintenance make it a practical choice for these applications.

Q&A

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