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34294-34478D TDO (Two-Row Double-Outer Race) (Imperial)

34294-34478D TDO (Two-Row Double-Outer Race) (Imperial)

The 34294-34478D is a two-row tapered roller bearing with a 2.95″ bore and 4.78″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 10,400 lbf and is designed for long-lasting performance.

Its double-row construction provides extra stability, while the open design allows for easy lubrication. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

With standard radial clearance and ABEC-1 precision, it’s a reliable choice for heavy-duty applications. Ideal for industrial machinery or automotive systems where combined loads are common.

Weighing 4.33 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 34294-34478D
  • Brand TFL
  • Size 2.9518" x 4.7812" x 0.906"
  • Bore Dia 2.9518"
  • Bore Dia Tolerance +0.005" 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 3.35"
  • Cup Frontface Backing Diameter 4.60"
  • Cage Cone Backface Clearance 0.09"
  • Dynamic Radial Load 40000 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 34294
  • 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) 5960 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 4600 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 10400 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 4.33 lb

Features

Performance Features of 34294-34478D Bearing

34294-34478D Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 40,000 lbf, ensuring reliable performance in heavy-duty applications.
The double-row tapered roller design distributes loads evenly, enhancing durability and reducing wear.
With a standard radial clearance, it provides smooth operation across various conditions.

How Is 34294-34478D Bearing Engineered for Reliability?

34294-34478D Bearing features a steel cage that maintains roller alignment, improving stability under stress.
The chrome steel construction resists wear, extending the bearing’s service life in demanding environments.
Its double-row design handles both radial and thrust loads efficiently, making it versatile for industrial use.
The ABEC-1 rating ensures consistent precision and performance.

Designed for Durability: 34294-34478D Bearing

34294-34478D Bearing’s tapered roller design reduces friction, ensuring smooth operation even under heavy loads.
The chrome steel materials resist corrosion, making it suitable for harsh or humid conditions.
With a dynamic radial rating of 10,400 lbf for two rows, it delivers long-lasting reliability.
Its standard lubrication requirement simplifies maintenance while ensuring optimal performance.

Steel vs Ceramic Bearings: Strengths of 34294-34478D Bearing

34294-34478D Bearing’s chrome steel construction provides excellent strength and wear resistance.
Unlike ceramic options, it offers superior load capacity, handling up to 40,000 lbf dynamic radial load.
The steel cage ensures roller alignment, reducing friction and extending service life.
Its temperature range of -30° to 110°C makes it adaptable to various industrial applications.

Application

Industrial Uses of 34294-34478D Bearing
The 34294-34478D Bearing is commonly used in heavy machinery, such as construction equipment and mining vehicles, where its double-row design handles combined radial and thrust loads efficiently.
Its chrome steel construction ensures durability in harsh environments, making it a reliable choice for long-term use.

Where Is 34294-34478D Bearing Used?
You’ll often find the 34294-34478D Bearing in agricultural machinery, like tractors and harvesters, where its tapered roller design provides stability under heavy loads.
The inch sizing makes it compatible with many North American industrial applications, simplifying replacements.

Built for Heavy-Duty Use: 34294-34478D Bearing
The 34294-34478D Bearing excels in applications like gearboxes and wheel hubs, where its open design allows for easy lubrication and maintenance.
Its standard radial clearance options make it adaptable to various operational conditions.

Automotive vs Aerospace: Applications of 34294-34478D Bearing
In automotive systems, the 34294-34478D Bearing supports axles and differentials, offering smooth performance under high stress.
For aerospace ground equipment, its precision and load capacity ensure reliable operation in demanding scenarios.

Perfect Fit for Automation: 34294-34478D Bearing
The 34294-34478D Bearing is ideal for automated conveyor systems, where its tapered rollers reduce friction and wear.
Its steel cage enhances stability, making it suitable for high-speed production lines.

Q&A

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