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TS (Single Row Tapered Roller Bearings) (Imperial) 34304-34478RB

TS (Single Row Tapered Roller Bearings) (Imperial) 34304-34478RB

The 34304-34478RB is a single-row tapered roller bearing with a 3.0455″ bore and 4.7812″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 23000 lbf radially and 4600 lbf thrust, making it versatile for various applications.

Its open design allows easy lubrication, while the steel cage ensures durability. The bearing operates smoothly in temperatures from -30°C to 110°C, suitable for demanding environments.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for heavy-duty machinery, gearboxes, or industrial equipment where combined loads are common.

Weighing 2 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

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Product Parameters

  • Part Number 34304-34478RB
  • Brand TFL
  • Interchangeable Timken
  • Size 3.0455" x 4.7812" x 0.9688"
  • Bore Dia 3.0455"
  • Bore Dia Tolerance +0.001" to 0
  • Outer Dia 4.7812"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 0.906"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.6875"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 0.9688"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.08"
  • Cone Frontface Backing Diameter 4.06"
  • Cone Backface Backing Diameter 3.54"
  • Cup Frontface Backing Diameter 4.60"
  • Cup Backface Backing Diameter 4.33"
  • Cage Cone Frontface Clearance 0.1"
  • Cage Cone Backface Clearance 0.09"
  • Effective Center Location 0.06"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 34304
  • Cup Part Number 34478RB
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 34000
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 23000 lbf
  • Static Radial Load 30600 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 5960 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 4600 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 2 lb

Features

Performance Features of 34304-34478RB Bearing

34304-34478RB Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 23,000 lbf, making it suitable for heavy-duty applications.
The tapered roller design ensures smooth operation and efficient load distribution.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

How Is 34304-34478RB Bearing Engineered for Reliability?

34304-34478RB Bearing features a steel cage that keeps the rollers aligned, reducing wear and extending service life.
The standard radial clearance allows for flexibility in different operating conditions.
Its dynamic thrust rating of 4,600 lbf ensures consistent performance under load.
The open design simplifies lubrication, maintaining optimal performance over time.

Built for Durability: 34304-34478RB Bearing

34304-34478RB Bearing’s chrome steel construction provides excellent resistance to wear and fatigue.
The single-row tapered roller design handles both radial and thrust loads efficiently.
With a static radial load capacity of 30,600 lbf, it excels in demanding environments.
Its ABEC-1 rating ensures reliable precision for various industrial applications.

Application

Industrial Uses of 34304-34478RB Bearing
34304-34478RB Bearing is commonly used in heavy machinery like construction equipment, where its tapered roller design handles combined radial and thrust loads effectively. The chrome steel construction ensures durability even in demanding environments.

In automotive applications, 34304-34478RB Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its inch sizing makes it a preferred choice for American and British vehicle models.

For industrial fans and pumps, 34304-34478RB Bearing’s open design allows for easy lubrication, extending service life in continuous operation. The steel cage adds stability, reducing wear over time.

Where Is 34304-34478RB Bearing Used?
You’ll often find 34304-34478RB Bearing in agricultural machinery, such as tractors and harvesters, where its robust design handles rough conditions. The tapered rollers distribute loads evenly, reducing stress on components.

In material handling systems, 34304-34478RB Bearing supports conveyor rollers, ensuring smooth movement of heavy loads. Its standard radial clearance makes it adaptable to various operational temperatures.

Built for Heavy-Duty Use: 34304-34478RB Bearing
34304-34478RB Bearing excels in mining equipment, where its high dynamic load capacity withstands extreme pressures. The chrome steel rollers resist deformation, maintaining precision under stress.

For railway applications, 34304-34478RB Bearing is used in axle boxes, providing reliable performance over long distances. Its ABEC-1 rating ensures consistent quality for critical transport systems.

Automotive vs Aerospace: Applications of 34304-34478RB Bearing
In automotive drivetrains, 34304-34478RB Bearing handles high torque and variable speeds, making it ideal for trucks and buses. The inch measurements simplify replacements in older models.

For aerospace ground support equipment, 34304-34478RB Bearing’s temperature tolerance ensures reliability in diverse climates. Its steel cage prevents friction-related failures during prolonged use.

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