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645-632D TDO (Two-Row Double-Outer Race) (Imperial)

645-632D TDO (Two-Row Double-Outer Race) (Imperial)

The 645-632D is a double-row tapered roller bearing with a 2.8125″ bore and 5.375″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 108,000 lbf and is designed for long-lasting performance.

Its open design allows for easy lubrication, while the steel cage ensures smooth operation. The bearing works well in temperatures from -30°C to 110°C, making it versatile for various conditions.

This model features a standard radial clearance and is ABEC-1 rated for reliable precision. Ideal for heavy-duty applications like industrial machinery or vehicle axles where combined loads are common.

Weighing 12.18 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe and dependable choice for replacements or new installations.

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Product Parameters

  • Part Number 645-632D
  • Brand TFL
  • 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
  • Double Cup Width 3"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 1.625"
  • Cone Width Tolerance +0.002" to -0.01
  • Bearing Width Across Cups 3.75"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.06"
  • Cone Backface Backing Diameter 3.66"
  • Cup Frontface Backing Diameter 4.96"
  • Cage Cone Backface Clearance 0.15"
  • Dynamic Radial Load 108000 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 645
  • Cup Part Number 632D
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 635
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 16100 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 9980 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 28000 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 12.18 lb

Features

How Is 645-632D Bearing Engineered for Reliability?

645-632D Bearing features a double-row tapered roller design, providing strong resistance to combined radial and thrust loads.
Its chrome steel construction ensures durability, with a dynamic radial load capacity of 108,000 lbf.

The precision-engineered cage keeps rollers aligned, reducing friction and extending service life.
With standard radial clearance options, it adapts to various operational needs while maintaining performance.

645-632D Bearing operates efficiently within a temperature range of -30° to 110°C.
Its open design simplifies lubrication, ensuring smooth operation in demanding conditions.

Application

Industrial Uses of 645-632D Bearing
The 645-632D Bearing is commonly used in heavy machinery like construction equipment and mining drills, where its double-row design handles combined radial and thrust loads efficiently. Its chrome steel construction ensures durability in tough working conditions.

Where Is 645-632D Bearing Used?
You’ll often find 645-632D Bearing in agricultural machinery, such as tractors and harvesters, where its tapered roller design provides stability under varying loads. The inch sizing makes it a good fit for North American equipment standards.

Built for Heavy-Duty Use: 645-632D Bearing
645-632D Bearing excels in industrial gearboxes, offering reliable performance even under high dynamic radial loads. Its open seal type allows for easy lubrication, extending service life in demanding applications.

Automotive vs Aerospace: Applications of 645-632D Bearing
In automotive systems, 645-632D Bearing supports wheel hubs and differentials, while in aerospace, it’s used in landing gear assemblies. The ABEC-1 rating ensures consistent precision across both sectors.

Essential Roles of 645-632D Bearing
645-632D Bearing is a go-to choice for conveyor systems in manufacturing plants, where its standard radial clearance balances load capacity and smooth operation. The steel cage adds extra resilience for long-term use.

Q&A

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