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TS (Single Row Tapered Roller Bearings) (Imperial) 78215C-78551

TS (Single Row Tapered Roller Bearings) (Imperial) 78215C-78551

The 78215C-78551 is a single-row tapered roller bearing with a 2.125″ bore and 5.513″ outer diameter, crafted from durable chrome steel. It handles combined loads up to 53200 lbf radial and 20400 lbf thrust, making it suitable for heavy-duty applications.

Its open design allows for easy lubrication, while the steel cage ensures reliable performance under stress. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is interchangeable with Timken bearings, offering a practical replacement option. Ideal for use in industrial machinery, gearboxes, or automotive systems where combined loads are common.

Weighing 6 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it meets environmental and safety requirements.

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Product Parameters

  • Part Number 78215C-78551
  • Brand TFL
  • Interchangeable Timken
  • Size 2.125" x 5.513" x 1.4375"
  • Bore Dia 2.125"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 5.513"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.3085"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.926"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.4375"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.090"
  • Cone Frontface Backing Diameter 3.05"
  • Cone Backface Backing Diameter 3.31"
  • Cup Frontface Backing Diameter 5.22"
  • Cup Backface Backing Diameter 4.61"
  • Cage Cone Frontface Clearance 0.21"
  • Cage Cone Backface Clearance 0.22"
  • Effective Center Location 0.33"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 78215C
  • Cup Part Number 78551
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 78000C
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 53200 lbf
  • Static Radial Load 52600 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 13800 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 20400 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 lb

Features

Performance Features of 78215C-78551 Bearing

78215C-78551 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 53,200 lbf, ensuring reliable performance in heavy-duty applications.

The steel cage maintains proper roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs well in various environmental conditions.

78215C-78551 Bearing’s standard radial clearance allows for smooth operation under different load conditions.
Its ABEC-1 rating ensures consistent precision for industrial applications.

Application

Industrial Uses of 78215C-78551 Bearing
78215C-78551 Bearing is commonly used in heavy-duty industrial equipment like conveyor systems and gearboxes, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability in demanding environments.
In automotive applications, 78215C-78551 Bearing supports axle assemblies and wheel hubs, providing reliable performance under both radial and thrust loads. Its imperial sizing makes it a straightforward replacement for Timken equivalents.

What Makes 78215C-78551 Bearing a Preferred Choice?
78215C-78551 Bearing’s open design simplifies lubrication, making it ideal for machinery requiring regular maintenance. The steel cage adds strength, ensuring smooth operation in high-load scenarios.
For agricultural machinery, 78215C-78551 Bearing excels in equipment like harvesters, where its robust build withstands harsh conditions. The standard radial clearance offers flexibility for various operational needs.

Built for Heavy-Duty Use: 78215C-78551 Bearing
78215C-78551 Bearing is a reliable choice for construction equipment, such as bulldozers, thanks to its high dynamic load capacity. The tapered rollers distribute stress evenly, extending service life.
In mining applications, 78215C-78551 Bearing performs well in crushers and screens, where its temperature range suits both hot and cold environments. The ABEC-1 rating ensures consistent precision.

Automotive vs Aerospace: Applications of 78215C-78551 Bearing
78215C-78551 Bearing is widely used in truck transmissions, offering stability under heavy loads. Its compatibility with Timken designs simplifies sourcing for repairs.
In aerospace ground support equipment, 78215C-78551 Bearing provides dependable performance, though it’s not rated for in-flight use. The inch measurements align with many US-made systems.

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