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55187-55444D TDO (Two-Row Double-Outer Race) (Imperial)

55187-55444D TDO (Two-Row Double-Outer Race) (Imperial)

The 55187-55444D is a double-row tapered roller bearing with a 1.875″ bore and 4.4375″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 49400 lbf and is designed for long-lasting performance.

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

This model is part of the 55000 series, with standard radial clearance and ABEC-1 precision. Ideal for heavy-duty applications like truck axles or industrial gearboxes 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 use.

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Product Parameters

  • Part Number 55187-55444D
  • Brand TFL
  • Size 1.875" x 4.4375" x 1.0594"
  • Bore Dia 1.875"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.4375"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 1.8125"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 1.0594"
  • Cone Width Tolerance +0.002" to -0.01
  • Bearing Width Across Cups 2.5624"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.06"
  • Cone Backface Backing Diameter 2.72"
  • Cup Frontface Backing Diameter 4.15"
  • Cage Cone Backface Clearance 0.16"
  • Dynamic Radial Load 49400 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 55187
  • Cup Part Number 55444D
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 55000
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 7350 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 11100 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 12800 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

Why Choose 55187-55444D Bearing for Combined Loads?

55187-55444D Bearing features a double-row tapered roller design, ideal for handling combined radial and thrust loads.
Its chrome steel construction ensures durability, with a dynamic radial load capacity of 49,400 lbf.

The open seal type allows for easy lubrication, maintaining smooth operation in various conditions.
With a standard radial clearance, it offers reliable performance across a temperature range of -30° to 110°C.

55187-55444D Bearing’s steel cage keeps rollers aligned, reducing wear and extending service life.
Its ABEC-1 rating ensures consistent precision for industrial applications.

Application

Industrial Uses of 55187-55444D Bearing
55187-55444D Bearing is commonly used in heavy machinery, such as construction equipment and mining vehicles, where its double-row design handles combined radial and thrust loads effectively. The chrome steel construction ensures durability in tough working conditions.

In automotive applications, 55187-55444D Bearing supports wheel hubs and differential systems, providing reliable performance under varying loads. Its inch sizing makes it suitable for American and British vehicle models.

For industrial automation, 55187-55444D Bearing is ideal for conveyor systems and robotic arms, where precision and load capacity are key. The open seal design allows for easy lubrication, extending its service life.

Where Is 55187-55444D Bearing Used?
55187-55444D Bearing finds its place in agricultural machinery, particularly in tractors and harvesters, where its tapered roller design manages heavy loads smoothly. The steel cage adds extra strength for long-term use.

In material handling equipment, 55187-55444D Bearing ensures smooth operation of forklifts and cranes, thanks to its high dynamic radial load rating. The standard radial clearance offers flexibility for different applications.

Built for Heavy-Duty Use: 55187-55444D Bearing
55187-55444D Bearing is a go-to choice for railway applications, such as axle boxes, where its combined load capacity and durability are essential. The ABEC-1 rating ensures consistent performance.

In wind turbines, 55187-55444D Bearing supports the main shaft, handling both radial and thrust loads efficiently. The temperature range of -30° to 110°C makes it suitable for various climates.

Automotive vs Aerospace: Applications of 55187-55444D Bearing
In automotive systems, 55187-55444D Bearing is used in heavy-duty trucks and buses, where its double-row design provides stability. The inch measurements align with standard automotive parts.

For aerospace ground equipment, 55187-55444D Bearing is employed in landing gear test rigs, offering reliable performance under high stress. The chrome steel rollers ensure minimal wear over time.

Q&A

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