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34306-34478D TDO (Two-Row Double-Outer Race) (Imperial)

34306-34478D TDO (Two-Row Double-Outer Race) (Imperial)

The 34306-34478D is a double-row tapered roller bearing with a 3.0625″ bore and 4.7812″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 47400 lbf and is designed for long-lasting performance.

Its open design allows for easy lubrication, while the steel cage ensures smooth operation even under heavy loads. The bearing works well in temperatures ranging from -30°C to 110°C.

This model is part of the 34000 series, featuring standard cups for straightforward installation. Ideal for industrial machinery or automotive applications where combined loads are common.

Weighing 4.03 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a reliable choice for various heavy-duty uses.

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Product Parameters

  • Part Number 34306-34478D
  • Brand TFL
  • Size 3.0625" x 4.7812" x 0.906"
  • Bore Dia 3.0625"
  • Bore Dia Tolerance +0.001" to 0
  • Outer Dia 4.7812"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 1.5"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 0.906"
  • Cone Width Tolerance +0.002" to -0.01
  • Bearing Width Across Cups 2.0625"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.03"
  • Cone Backface Backing Diameter 3.58"
  • Cup Frontface Backing Diameter 4.60"
  • Cage Cone Backface Clearance 0.09"
  • Dynamic Radial Load 47400 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 34306
  • Cup Part Number 34478D
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 34000
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 7060 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 5450 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 12300 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 4.03 lb

Features

Performance Features of 34306-34478D Bearing

34306-34478D Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 47,400 lbf, ensuring reliable performance in heavy-duty applications.

The double-row tapered roller design distributes loads evenly, reducing stress and extending service life.
With a standard radial clearance, it provides smooth operation across various conditions.

34306-34478D Bearing operates efficiently within a temperature range of -30° to 110°C.
The steel cage maintains roller alignment, enhancing durability and reducing maintenance needs.

Designed for combined load applications, this bearing balances strength and precision.
Its inch measurements and open construction make it versatile for industrial use.

Application

Industrial Uses of 34306-34478D Bearing
The 34306-34478D 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. Its chrome steel construction ensures durability in demanding environments.

In automotive applications, 34306-34478D Bearing supports wheel hubs and differential systems, providing reliable performance under varying loads. The inch sizing makes it compatible with many North American vehicle models.

For industrial automation, 34306-34478D Bearing’s tapered roller design offers stability in conveyor systems and robotic arms. The open seal type allows for easy lubrication, extending its service life in high-use scenarios.

What Makes 34306-34478D Bearing a Preferred Choice?
The 34306-34478D Bearing’s standard radial clearance and ABEC-1 rating make it suitable for general machinery where precision isn’t critical but reliability is key. Its steel cage adds strength without excessive weight.

In agricultural equipment, 34306-34478D Bearing withstands harsh conditions like dust and moisture, thanks to its robust chrome steel rollers. The double-row configuration distributes loads evenly, reducing wear over time.

Built for Heavy-Duty Use: 34306-34478D Bearing
The 34306-34478D Bearing excels in applications like gearboxes and drivetrains, where its dynamic load capacity ensures smooth operation. Its temperature range of -30° to 110°C suits most industrial environments.

For material handling systems, 34306-34478D Bearing’s tapered rollers provide excellent shock absorption. The open design simplifies maintenance, making it a practical choice for continuous operation.

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