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TS (Single Row Tapered Roller Bearings) (Imperial) 643-634W

TS (Single Row Tapered Roller Bearings) (Imperial) 643-634W

The 643-634W is a single-row tapered roller bearing with a 2.75″ bore and 5.375″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 62100 lbf radially and 9980 lbf in 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 6.2 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and eco-friendly use.

The standard radial clearance and ABEC-1 rating make it suitable for general precision needs. Its tapered roller design ensures even load distribution, enhancing longevity.

Perfect for applications like gearboxes or wheel hubs, where durability and performance are key. The chrome steel construction resists wear, even under demanding conditions.

Easy to maintain with regular lubrication, this bearing is a practical choice for engineers and mechanics alike. Its dimensions and tolerances ensure a precise fit in most standard setups.

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Product Parameters

  • Part Number 643-634W
  • Brand TFL
  • Interchangeable Timken
  • Size 2.75" x 5.375" x 1.7814"
  • Bore Dia 2.75"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 5.375"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.625"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 1.4063"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.7814"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.06"
  • Cone Frontface Backing Diameter 3.82"
  • Cone Backface Backing Diameter 3.39"
  • Cup Frontface Backing Diameter 4.96"
  • Cup Backface Backing Diameter 4.80"
  • 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 634W
  • 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 6.2 lb

Features

Performance Features of 643-634W Bearing

643-634W Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 62,100 lbf, ensuring reliable performance in demanding conditions.

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

643-634W Bearing requires lubrication, enhancing its durability and smooth operation.
Its standard radial clearance allows for flexibility in different applications.

Application

Industrial Uses of 643-634W Bearing
The 643-634W Bearing is commonly used in heavy machinery like conveyor systems and industrial gearboxes, where its tapered roller design handles combined loads efficiently. Its chrome steel construction ensures durability even in demanding environments.

Where Is 643-634W Bearing Used?
You’ll often find the 643-634W Bearing in automotive applications, particularly in wheel hubs and differential systems. Its inch sizing makes it a reliable choice for older or custom-built vehicles.

Built for Heavy-Duty Use: 643-634W Bearing
This bearing excels in construction equipment, such as excavators and cranes, thanks to its high dynamic radial load capacity. The open design allows for easy lubrication, extending its service life.

Automotive vs Aerospace: Applications of 643-634W Bearing
In automotive settings, the 643-634W Bearing supports heavy axles and transmissions, while its precision makes it suitable for certain aerospace components. The steel cage adds extra stability under stress.

Perfect Fit for Automation: 643-634W Bearing
The 643-634W Bearing works well in automated assembly lines, where its consistent performance keeps production smooth. Its standard radial clearance ensures compatibility with various machinery setups.

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