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TS (Single Row Tapered Roller Bearings) (Imperial) 643-633

TS (Single Row Tapered Roller Bearings) (Imperial) 643-633

The 643-633 is a single-row tapered roller bearing with a 2.75″ bore and 5.125″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 62,100 lbf radially and 9,980 lbf thrust, making it versatile for heavy-duty use.

Its open design allows for easy lubrication, while the steel cage ensures durability under high stress. 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, gearboxes, or automotive applications where robust performance is needed.

Weighing 5 lb, it’s built to last while maintaining a standard ABEC-1 rating. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number 643-633
  • Brand TFL
  • Interchangeable Timken
  • Size 2.75" x 5.125" x 1.625"
  • Bore Dia 2.75"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 5.125"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.625"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 1.25"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.625"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 3.82"
  • Cone Backface Backing Diameter 3.39"
  • Cup Frontface Backing Diameter 4.89"
  • Cup Backface Backing Diameter 4.57"
  • Cage Cone Frontface Clearance 0.1"
  • Cage Cone Backface Clearance 0.15"
  • Effective Center Location -0.44"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 643
  • Cup Part Number 633
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 635
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 62100 lbf
  • Static Radial Load 67000 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 16100 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 9980 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 5 lb

Features

Why Choose 643-633 Bearing for Precision Tasks?

643-633 Bearing is crafted with chrome steel rings and rollers, ensuring strength and durability for combined load applications.
Its dynamic radial load capacity reaches 62,100 lbf, making it suitable for demanding industrial environments.

The single-row tapered roller design enhances stability and reduces friction during operation.
With a standard radial clearance, it offers reliable performance across various operating conditions.

643-633 Bearing operates efficiently within a temperature range of -30° to 110°C.
Its steel cage maintains roller alignment, contributing to extended service life and reduced maintenance needs.

Application

Industrial Uses of 643-633 Bearing
The 643-633 Bearing is commonly used in heavy machinery, such as construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. Its chrome steel construction ensures durability even in demanding environments.

Where Is 643-633 Bearing Used?
You’ll often find 643-633 Bearing in automotive applications like truck wheel hubs, where its robust design supports both radial and thrust loads. The inch sizing makes it a popular choice for North American vehicle manufacturers.

Built for Heavy-Duty Use: 643-633 Bearing
In industrial settings, 643-633 Bearing excels in conveyor systems and gearboxes, thanks to its high dynamic load capacity. The open design allows for easy lubrication, extending its service life.

Automotive vs Aerospace: Applications of 643-633 Bearing
While 643-633 Bearing is a staple in truck axles, its precision also suits aerospace components like landing gear systems. The ABEC-1 rating ensures reliable performance in both sectors.

Key Fields for 643-633 Bearing
For mining equipment, 643-633 Bearing’s ability to handle heavy loads and harsh conditions makes it a trusted choice. The steel cage adds extra strength, reducing wear over time.

Q&A

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