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TS (Single Row Tapered Roller Bearings) (Imperial) 74550A-74853

TS (Single Row Tapered Roller Bearings) (Imperial) 74550A-74853

The 74550A-74853 is a single-row tapered roller bearing with a 5.5″ bore and 8.5″ outer diameter, crafted from robust chrome steel. It handles combined loads up to 85900 lbf radially and 18600 lbf thrust, making it suitable for heavy-duty applications.

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 construction equipment where combined loads are common.

Weighing 14.6 lb, it’s built to last with standard radial clearance and ABEC-1 precision. Compliant with RoHS and REACH standards for safe and sustainable use.

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Product Parameters

  • Part Number 74550A-74853
  • Brand TFL
  • Interchangeable Timken
  • Size 5.5" x 8.5" x 2.125"
  • Bore Dia 5.5"
  • Bore Dia Tolerance +0.001" to 0
  • Outer Dia 8.5"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.875"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 1.875"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 2.125"
  • Width Tolerance +0.014" to -0.01"
  • Cone Backface ToClear Radius 0.25"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 6.97"
  • Cone Backface Backing Diameter 6.54"
  • Cup Frontface Backing Diameter 8.30"
  • Cup Backface Backing Diameter 7.72"
  • Cage Cone Frontface Clearance 0.11"
  • Cage Cone Backface Clearance 0.17"
  • Effective Center Location 0.09"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 74550A
  • Cup Part Number 74853
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 74000
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 85900 lbf
  • Static Radial Load 138000 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 22300 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 18600 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 14.6 lb

Features

Performance Features of 74550A-74853 Bearing

74550A-74853 Bearing is crafted from chrome steel for both rings and rollers, ensuring strength and durability.
Its dynamic radial load capacity reaches 85,900 lbf, making it suitable for heavy-duty applications.

The single-row tapered roller design efficiently handles combined loads, providing reliable performance.
With a standard radial clearance, it offers flexibility for various operational needs.

74550A-74853 Bearing operates within a temperature range of -30° to 110°C, ensuring stability in diverse conditions.
The steel cage maintains roller alignment, reducing wear and extending service life.

This bearing requires lubrication, but its robust construction minimises maintenance needs.
Its ABEC-1 rating ensures consistent performance for precision tasks.

Application

Common Applications of 74550A-74853 Bearing
You’ll often spot 74550A-74853 Bearing in heavy machinery like construction equipment, where its tapered roller design handles combined radial and thrust loads effortlessly. The imperial sizing makes it a natural fit for North American industrial applications.
In agricultural machinery, 74550A-74853 Bearing proves valuable for axle systems, thanks to its robust chrome steel construction. Its standard radial clearance works well in environments with moderate vibration and shock loads.
For mining operations, 74550A-74853 Bearing’s durability shines in conveyor systems and crushers. The steel cage provides reliable performance even in dusty conditions where maintenance intervals might be longer.

Why Is 74550A-74853 Bearing Essential in Machinery?
74550A-74853 Bearing becomes crucial in paper mill rollers where consistent performance under heavy loads matters. Its ABEC-1 rating offers sufficient precision for most industrial needs without unnecessary cost.
The bearing’s temperature tolerance makes it suitable for food processing equipment that undergoes regular cleaning cycles. You’ll appreciate how the open design simplifies lubrication in hard-to-reach spots.

Built for Heavy-Duty Use: 74550A-74853 Bearing
When working with railway freight car axles, 74550A-74853 Bearing’s static load capacity prevents deformation during long hauls. The Timken-interchangeable design means easier sourcing for maintenance teams.
In steel mill applications, this bearing stands up to both high loads and moderate misalignment. Its effective center location helps distribute stresses evenly across the rollers.

Automotive vs Industrial: Where 74550A-74853 Bearing Excels
While not common in passenger vehicles, 74550A-74853 Bearing finds purpose in commercial truck wheel ends. The 74000 series’ proven design offers good value for fleet operators.
For industrial pumps, this bearing’s dynamic thrust rating ensures reliable performance in continuous operation. The inch measurements simplify replacement in older American-made equipment.

Practical Applications of 74550A-74853 Bearing
74550A-74853 Bearing works well in wind turbine yaw systems where moderate precision meets durability needs. The chrome steel rollers maintain performance through temperature fluctuations.
In marine deck machinery, the bearing’s corrosion-resistant materials handle saltwater exposure better than standard options. Its weight-to-capacity ratio makes it practical for offshore applications.

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