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TS (Single Row Tapered Roller Bearings) (Imperial) 34300-34478

TS (Single Row Tapered Roller Bearings) (Imperial) 34300-34478

The 34300-34478 is a single-row tapered roller bearing with a 3″ 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 for easy lubrication, while the steel cage ensures durability under heavy use. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for industrial machinery or automotive systems where combined loads are common.

Weighing 2.1 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number 34300-34478
  • Brand TFL
  • Interchangeable Timken
  • Size 3" x 4.7812" x 0.9688"
  • Bore Dia 3"
  • 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 4.02"
  • Cone Backface Backing Diameter 3.39"
  • 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 34300
  • Cup Part Number 34478
  • 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 2.1 lb

Features

Built for Reliability: 34300-34478 Bearing

34300-34478 Bearing is constructed with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 23,000 lbf, ensuring dependable performance in tough conditions.

The steel cage maintains proper roller alignment, reducing friction and enhancing durability.
With a temperature range of -30° to 110°C, it performs well in various environments.

34300-34478 Bearing’s standard radial clearance allows for smooth operation and easy installation.
Its tapered roller design efficiently handles both radial and thrust loads.

The open seal type simplifies maintenance while keeping lubrication requirements straightforward.
Weighing just 2.1 lb, it balances strength with manageable size for imperial system applications.

Application

Industrial Uses of 34300-34478 Bearing
The 34300-34478 Bearing is commonly used in heavy machinery, such as construction equipment and agricultural gear, where its tapered roller design handles combined loads efficiently. Its chrome steel construction ensures durability in demanding environments.

In automotive applications, 34300-34478 Bearing fits well in wheel hubs and drivetrains, providing reliable performance under radial and thrust loads. The imperial sizing makes it a straightforward replacement for Timken equivalents in older vehicles.

For industrial conveyor systems, 34300-34478 Bearing’s open design simplifies lubrication and maintenance, reducing downtime. The steel cage adds strength, making it suitable for high-load scenarios.

Where Is 34300-34478 Bearing Used?
You’ll often find 34300-34478 Bearing in mining equipment, where its robust design withstands harsh conditions. The tapered rollers distribute loads evenly, extending service life.

In manufacturing plants, 34300-34478 Bearing supports machinery like presses and gearboxes, ensuring smooth operation. Its ABEC-1 rating balances precision and cost-effectiveness for general industrial use.

Built for Heavy-Duty Use: 34300-34478 Bearing
The 34300-34478 Bearing excels in applications like forklifts and cranes, where its high static radial load capacity is crucial. The inch measurements make it compatible with older US-made machinery.

For railway maintenance equipment, 34300-34478 Bearing’s temperature tolerance and lubrication requirements suit outdoor use. Its standard radial clearance offers flexibility for various operating conditions.

Automotive vs Aerospace: Applications of 34300-34478 Bearing
In automotive settings, 34300-34478 Bearing handles wheel and transmission loads reliably, while its aerospace use is limited by ABEC-1 precision. The chrome steel rollers provide consistent performance in both fields.

For ground support equipment in aviation, 34300-34478 Bearing’s durability shines, though higher-precision bearings are preferred for flight components. Its interchangeability with Timken simplifies sourcing.

Q&A

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