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TS (Single Row Tapered Roller Bearings) (Imperial) 644-632
TS (Single Row Tapered Roller Bearings) (Imperial) 644-632

TS (Single Row Tapered Roller Bearings) (Imperial) 644-632

The 644-632 is a single-row tapered roller bearing with a 2.8125″ bore and 5.375″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 62100 lbf radially and 9980 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 5.6 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for most environments. The ABEC-1 rating ensures consistent performance for general applications.

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Product Parameters

  • Part Number 644-632
  • Brand TFL
  • Interchangeable Timken
  • Size 2.8125" x 5.375" x 1.625"
  • Bore Dia 2.8125"
  • 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 1.25"
  • 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 3.87"
  • Cone Backface Backing Diameter 3.43"
  • Cup Frontface Backing Diameter 4.96"
  • Cup Backface Backing Diameter 4.65"
  • 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 644
  • Cup Part Number 632
  • 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 5.6 lb

Features

Performance Features of 644-632 Bearing

644-632 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 heavy-duty applications.
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.

How Is 644-632 Bearing Engineered for Reliability?

644-632 Bearing features a single-row tapered roller design, optimised for combined load handling.
The chrome steel construction provides durability, while the standard radial clearance ensures smooth operation.
Its dynamic thrust rating of 9,980 lbf at 90 million revolutions highlights long-term reliability.
This bearing is interchangeable with Timken models, offering flexibility in replacements.

Built for Durability: 644-632 Bearing

644-632 Bearing’s chrome steel rollers and rings resist wear, even under high radial loads.
The steel cage design ensures proper roller spacing, minimising friction and heat generation.
With a static radial load capacity of 67,000 lbf, it handles demanding industrial applications.
Its ABEC-1 rating confirms consistent precision in performance.

Application

Industrial Uses of 644-632 Bearing
The 644-632 Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads efficiently. Its chrome steel construction ensures durability even in tough working conditions.

In automotive applications, 644-632 Bearing fits well in truck wheel hubs and drivetrains, providing reliable performance under high radial and thrust loads. The inch sizing makes it a straightforward replacement for many North American vehicle models.

For industrial conveyor systems, 644-632 Bearing’s open design allows easy lubrication, extending service life in dusty or high-load environments. The steel cage adds extra strength, making it suitable for continuous operation.

Where Is 644-632 Bearing Used?
You’ll often find 644-632 Bearing in mining equipment, where its robust build handles extreme loads and vibrations. The standard radial clearance ensures smooth operation even under fluctuating conditions.

In paper mills, 644-632 Bearing supports heavy rollers, thanks to its high dynamic radial load capacity. The ABEC-1 rating balances precision and cost-effectiveness for such industrial settings.

Built for Heavy-Duty Use: 644-632 Bearing
The 644-632 Bearing excels in forestry machinery, where its tapered rollers manage uneven loads from log handling. Its temperature range (-30° to 110°C) suits outdoor operations in varying climates.

For railroad applications, 644-632 Bearing’s steel cage and chrome steel rollers withstand constant vibration. The inch dimensions simplify maintenance for older rail stock.

Automotive vs Aerospace: Applications of 644-632 Bearing
In trucks, 644-632 Bearing handles wheel loads, while its aerospace use is limited by ABEC-1 precision. Still, it’s a cost-effective choice for ground support equipment.

The bearing’s 5.6 lb weight suits stationary industrial gear more than aircraft, but its 67,000 lbf static load makes it ideal for heavy vehicle axles.

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