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TS (Single Row Tapered Roller Bearings) (Imperial) 34274-34478RB

TS (Single Row Tapered Roller Bearings) (Imperial) 34274-34478RB

The 34274-34478RB is a single-row tapered roller bearing with a 2.754″ 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 2.4 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 34274-34478RB
  • Brand TFL
  • Interchangeable Timken
  • Size 2.754" x 4.7812" x 0.9688"
  • Bore Dia 2.754"
  • Bore Dia Tolerance +0.005" 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 0.080"
  • Cup Backface ToClear Radius 0.08"
  • Cone Frontface Backing Diameter 3.74"
  • Cone Backface Backing Diameter 3.19"
  • 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 34274
  • 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 2.4 lb

Features

How Is 34274-34478RB Bearing Engineered for Reliability?

34274-34478RB Bearing features chrome steel rings and rollers, ensuring durability under combined loads.
Its dynamic radial load capacity reaches 23,000 lbf, making it suitable for heavy-duty applications.

The tapered roller design distributes loads evenly, reducing stress and extending service life.
With a standard radial clearance, it offers reliable performance in various operating conditions.

34274-34478RB Bearing operates within a temperature range of -30° to 110°C, adapting to diverse environments.
Its steel cage maintains roller alignment, ensuring smooth and efficient operation.

The open design simplifies lubrication, keeping maintenance straightforward and cost-effective.
Compliant with RoHS and REACH standards, it meets international environmental and safety requirements.

Application

Industrial Uses of 34274-34478RB Bearing
34274-34478RB 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, 34274-34478RB Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its imperial sizing makes it a preferred choice for North American vehicle models.

For industrial conveyor systems, 34274-34478RB Bearing offers smooth operation and easy maintenance due to its open design. The steel cage adds extra strength, making it suitable for high-load scenarios.

Where Is 34274-34478RB Bearing Used?
You’ll often find 34274-34478RB Bearing in agricultural machinery, where its robust design withstands dusty and rough conditions. The tapered rollers distribute loads evenly, reducing wear over time.

In mining equipment, 34274-34478RB Bearing excels due to its high dynamic radial load capacity. The standard radial clearance allows for flexibility in different operating conditions.

Built for Heavy-Duty Use: 34274-34478RB Bearing
34274-34478RB Bearing is ideal for gearboxes in industrial settings, where its combined load capability ensures long service life. The ABEC-1 rating provides a good balance of precision and affordability.

For railway applications, 34274-34478RB Bearing’s tapered rollers handle the constant vibrations and shocks effectively. The steel cage and chrome steel components resist wear even under heavy use.

Automotive vs Aerospace: Applications of 34274-34478RB Bearing
In automotive systems, 34274-34478RB Bearing is often used in drivetrains, where its durability and load capacity are crucial. The imperial sizing simplifies replacements in older vehicle models.

For aerospace ground support equipment, 34274-34478RB Bearing provides reliable performance in load-handling mechanisms. Its temperature range suits both indoor and outdoor operational needs.

Q&A

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