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

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

The 34300A-34478RB 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. 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 2.1 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 34300A-34478RB
  • 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 4.06"
  • 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 34300A
  • 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 2.1 lb

Features

Performance Features of 34300A-34478RB Bearing

34300A-34478RB Bearing is crafted with chrome steel rings and rollers, offering robust performance under combined loads.
Its dynamic radial load capacity reaches 23,000 lbf, making it suitable for heavy-duty applications.
The steel cage ensures proper roller alignment, enhancing durability and reducing friction.
With an ABEC-1 rating, it provides reliable precision for various industrial uses.

How Is 34300A-34478RB Bearing Engineered for Reliability?

34300A-34478RB Bearing features a tapered roller design, optimised for handling both radial and thrust loads.
The chrome steel construction resists wear, ensuring a long service life even in demanding conditions.
Its standard radial clearance allows for smooth operation across a temperature range of -30° to 110°C.
Weighing just 2.1 lb, it balances strength and ease of handling.

Built for Durability: 34300A-34478RB Bearing

34300A-34478RB Bearing’s single-row construction provides stability and efficiency in combined load scenarios.
The steel cage maintains roller positioning, reducing wear and extending operational life.
With a static radial load capacity of 30,600 lbf, it excels in high-stress environments.
Its open design simplifies lubrication, ensuring consistent performance over time.

Application

Industrial Uses of 34300A-34478RB Bearing
This tapered roller bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its combined load handling is essential. The chrome steel construction ensures durability even in tough working conditions.

Where Is 34300A-34478RB Bearing Used?
You’ll often find this bearing in automotive axles and wheel hubs, thanks to its ability to manage both radial and thrust loads. Its inch sizing makes it a good fit for American-made vehicles and industrial systems.

Built for Heavy-Duty Use: 34300A-34478RB Bearing
In conveyor systems and mining equipment, 34300A-34478RB Bearing stands up to constant stress and vibration. The steel cage adds extra strength, making it reliable for long-term use.

Automotive vs Aerospace: Applications of 34300A-34478RB Bearing
While it’s popular in truck transmissions, this bearing also suits aerospace applications like landing gear due to its high load capacity. The standard radial clearance allows for smooth operation in varied conditions.

Perfect Fit for Automation: 34300A-34478RB Bearing
In robotic arms and assembly line systems, 34300A-34478RB Bearing offers precise movement and stability. Its open design simplifies lubrication, which is key for maintaining performance in automated settings.

Q&A

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