78255D

Part Number 78255D
System of Measurement Inch
Type Cones
Bearing Part Number 78255D-78537
, 78255D-78551
, 78255D-78571
Bearing Type Roller
Roller Bearing Type Tapered
For Load Direction Combined
Construction Double Row
Seal Type Open
Series 78000
Bore Dia 2.5586″
Bore Dia Tolerance +0.005″ to 0
Double Cone Width 2.598″
Double Cone Width Tolerance +0.003″ to -0.01
Cone Backface ToClear Radius 0.06″
Cone Frontface Backing Diameter 3.11″
Cone Backface Backing Diameter 3.11″
Cage Cone Frontface Clearance 0.08″
Static Radial Load 43400 lbf
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Rating(90 Million Revolutions) 9970 lbf
Dynamic Radial Rating(Two Row 1 Million Revolutions) 66900 lbf
Dynamic Radial Rating(1 Million Revolutions) 38400 lbf
Dynamic Thrust Rating(90 Million Revolutions) 14800 lbf
Dynamic Radial Rating(Two Row 90 Million Revolutions) 17400 lbf
Temperature Range -30° to 110 °C
ABEC Rating ABEC-1
Radial Clearance Standard (Available in C3/C4/C5)
RoHS Compliant
REACH Compliant

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Description

Design Features of 78255D Bearing

78255D bearing features two tapered roller assemblies combined in a single cone, providing stable support for heavy radial and axial loads. 78255D double cone width is 2.598″. Its bore dia is 2.5586″. This design enhances load distribution, making it ideal for applications requiring precise alignment and durability.

 

What Benefits Can 78255D Bearing Provide?

  • High Load Capacity: It supports heavy radial and axial loads, making it suitable for demanding applications.
  • Improved Stability: The dual tapered rollers enhance balance and reduce deflection under load.
  • Durability: Its robust design ensures longer life and less maintenance.
  • Precise Alignment: The cone structure aids in accurate alignment, which reduces wear on machinery.

 

What Can 78255D Bearing Be Used for?

  • Automotive: Commonly found in wheel hubs, transmissions, and differentials for supporting heavy loads.
  • Industrial Machinery: Ideal for conveyor systems, gearboxes, and other equipment requiring high load capacity and stability.
  • Double Row Equipment: Used in heavy machinery like excavators and bulldozers to handle demanding conditions.
  • Mining Equipment: Suitable for harsh environments due to its durability and ability to support heavy radial and axial loads.
  • Aerospace: Utilized in landing gear and other components where precision and reliability are crucial.

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