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55212C-55452D TDO (Two-Row Double-Outer Race) (Imperial)

55212C-55452D TDO (Two-Row Double-Outer Race) (Imperial)

The 55212C-55452D is a double-row tapered roller bearing with a 2.125″ bore and 4.5268″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 59200 lbf and is designed for long-lasting performance in demanding conditions.

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 environments.

This model is part of the 55000C series, with standard radial clearance and ABEC-1 precision. Ideal for heavy-duty applications like industrial gearboxes or construction equipment where combined loads are common.

Weighing 6.01 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a reliable choice for replacements or new installations.

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Product Parameters

  • Part Number 55212C-55452D
  • Brand TFL
  • Size 2.125" x 4.5268" x 1.0594"
  • Bore Dia 2.125"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.5268"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 1.75"
  • 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 2.5623"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.03"
  • Cone Backface Backing Diameter 3.23"
  • Cup Frontface Backing Diameter 4.18"
  • Cage Cone Backface Clearance 0.17"
  • Dynamic Radial Load 59200 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 55212C
  • Cup Part Number 55452D
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 55000C
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 8810 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 13300 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 15300 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 6.01 lb

Features

How Is 55212C-55452D Bearing Engineered for Reliability?

55212C-55452D Bearing features a double-row tapered roller design, providing robust support for combined radial and thrust loads.
Its chrome steel construction ensures durability, with a dynamic radial load capacity of 59,200 lbf.
The steel cage maintains roller alignment, enhancing performance and extending service life.
With a standard radial clearance and ABEC-1 rating, it offers consistent precision in various applications.

What Makes 55212C-55452D Bearing Suitable for High-Temperature Applications?

55212C-55452D Bearing operates reliably in temperatures ranging from -30° to 110°C, making it versatile for different environments.
The chrome steel rings and rollers resist thermal expansion, maintaining structural integrity under heat.
Its open design allows for effective lubrication, further enhancing high-temperature performance.
This bearing is ideal for industrial applications where temperature fluctuations are common.

Built for Durability: 55212C-55452D Bearing

55212C-55452D Bearing is constructed with high-quality chrome steel, ensuring long-lasting performance under heavy loads.
Its double-row design distributes stress evenly, reducing wear and tear over time.
The steel cage keeps rollers in place, preventing misalignment and extending operational life.
With a dynamic radial rating of 15,300 lbf for two rows, it excels in demanding conditions.

Steel vs Ceramic Bearings: Strengths of 55212C-55452D Bearing

55212C-55452D Bearing uses chrome steel for both rings and rollers, offering excellent strength and cost-effectiveness.
This material choice provides superior load capacity compared to ceramic alternatives in industrial settings.
The steel cage ensures reliable roller alignment, enhancing overall performance.
Its robust construction makes it a practical choice for heavy-duty applications.

Application

Where Is 55212C-55452D Bearing Used?
55212C-55452D Bearing is commonly found in heavy-duty industrial equipment, such as mining machinery and construction gear, where its double-row design handles combined radial and thrust loads efficiently. The chrome steel construction ensures durability even in demanding environments.
In automotive applications, 55212C-55452D Bearing supports axle systems and wheel hubs, providing reliable performance under varying load conditions. Its imperial sizing makes it a preferred choice for North American vehicle manufacturers.

How Does 55212C-55452D Bearing Improve Performance?
55212C-55452D Bearing enhances performance in agricultural machinery by reducing friction and wear in gearboxes and PTO shafts. The tapered roller design distributes loads evenly, extending the lifespan of critical components.
For material handling systems, 55212C-55452D Bearing’s open design allows for easy lubrication, ensuring smooth operation in conveyor belts and lifting equipment. Its high dynamic load capacity makes it suitable for continuous use.

Built for Heavy-Duty Use: 55212C-55452D Bearing
55212C-55452D Bearing excels in forestry equipment, where its robust construction withstands shock loads and harsh conditions. The steel cage adds stability, preventing roller misalignment during operation.
In railway applications, 55212C-55452D Bearing provides reliable support for bogies and axle boxes, ensuring safe and efficient train movement. Its temperature tolerance range makes it adaptable to varying climates.

Automotive vs Aerospace: Applications of 55212C-55452D Bearing
In automotive systems, 55212C-55452D Bearing is ideal for differentials and drivetrains, offering precise load handling and longevity. The standard radial clearance ensures consistent performance over time.
For aerospace ground support equipment, 55212C-55452D Bearing’s high dynamic thrust rating makes it suitable for aircraft tow tractors and cargo loaders. Its compliance with RoHS and REACH standards adds an eco-friendly advantage.

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