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TS (Single Row Tapered Roller Bearings) (Imperial) 645-633

TS (Single Row Tapered Roller Bearings) (Imperial) 645-633

The 645-633 is a single-row tapered roller bearing with a 2.8125″ bore and 5.125″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 62100 lbf radially and 9980 lbf thrust-wise, suitable for demanding applications.

Its open design allows 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, making it a practical choice for replacements. Ideal for industrial machinery or automotive systems where combined loads are common.

Weighing 4.8 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and reliable performance.

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Product Parameters

  • Part Number 645-633
  • Brand TFL
  • Interchangeable Timken
  • Size 2.8125" x 5.125" x 1.625"
  • Bore Dia 2.8125"
  • 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 0.25"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 3.87"
  • Cone Backface Backing Diameter 3.66"
  • 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 645
  • 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 4.8 lb

Features

How Does 645-633 Bearing Handle Combined Loads?

645-633 Bearing is built with chrome steel rings and rollers, offering strong resistance to both radial and thrust 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.

Why Choose 645-633 Bearing for Heavy-Duty Applications?

645-633 Bearing’s tapered roller design efficiently distributes combined loads, enhancing durability.
The chrome steel construction resists wear, making it suitable for high-stress operations.
Its standard radial clearance allows for smooth performance in diverse applications.
Weighing 4.8 lb, it balances strength and practicality for industrial use.

Engineered for Reliability: 645-633 Bearing

645-633 Bearing features precise cone and cup dimensions, ensuring accurate fit and function.
The steel cage provides stability, while the open design simplifies maintenance.
With a static radial load capacity of 67,000 lbf, it handles heavy loads with ease.
Its ABEC-1 rating guarantees consistent performance in various settings.

Material Composition of 645-633 Bearing

645-633 Bearing uses chrome steel for both rings and rollers, ensuring strength and longevity.
The steel cage adds durability, keeping rollers in place during operation.
This material choice resists wear and corrosion, extending the bearing’s service life.
It complies with RoHS and REACH standards, making it environmentally friendly.

Performance Features of 645-633 Bearing

645-633 Bearing’s tapered rollers reduce friction, improving efficiency under combined loads.
Its dynamic thrust rating of 9,980 lbf ensures reliable performance in thrust applications.
The bearing operates smoothly within a wide temperature range, from -30° to 110°C.
Its standard radial clearance options provide flexibility for different installation needs.

Application

Industrial Uses of 645-633 Bearing
The 645-633 Bearing is a reliable choice for heavy machinery, such as construction equipment and mining rigs, where combined radial and thrust loads are common. Its chrome steel construction ensures durability even in demanding environments.

In automotive applications, 645-633 Bearing works well in wheel hubs and differential systems, thanks to its tapered roller design. The inch sizing makes it compatible with many North American vehicle models.

For industrial conveyor systems, 645-633 Bearing’s open design simplifies maintenance, while its steel cage provides stability under continuous use. The standard radial clearance also allows for smooth operation in varying temperatures.

Where Is 645-633 Bearing Used?
You’ll often find 645-633 Bearing in agricultural machinery, like tractors and harvesters, where its robust design handles uneven loads effortlessly. The tapered rollers distribute stress evenly, extending service life.

In material handling equipment, 645-633 Bearing supports heavy loads in forklifts and cranes. Its ABEC-1 rating ensures consistent performance without requiring high precision.

Built for Heavy-Duty Use: 645-633 Bearing
The 645-633 Bearing excels in forestry equipment, such as log splitters, where its combined load capacity is put to the test. The steel cage and chrome steel rollers resist wear even in gritty conditions.

For railway applications, 645-633 Bearing fits well in axle boxes, providing reliable performance over long distances. Its temperature range (-30° to 110°C) ensures adaptability in various climates.

Automotive vs Aerospace: Applications of 645-633 Bearing
In automotive drivetrains, 645-633 Bearing handles high torque and variable speeds, making it ideal for trucks and off-road vehicles. The inch measurements align with many aftermarket parts.

While not typically used in aerospace, 645-633 Bearing suits ground support equipment like tugs and loaders. Its static radial load capacity (67,000 lbf) ensures stability under heavy weights.

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