The wheel hub winds the wire rope, with its forged hub connected to the drum barrel. It must transmit torque from the hoisting motor while withstanding the tensile forces of the wire rope.
Premium hubs undergo UT testing to Class B per EN 10228-3, with hardness precisely controlled to 180-220 HB for optimal wear resistance against rope abrasion.
Item
Specification / Requirement
Component
Premium Hubs
Non-Destructive Test
Ultrasonic Testing (UT)
Testing Standard
Class B per EN 10228-3
Hardness Control
180-220 HB
Performance Objective
Optimal wear resistance against rope abrasion
Advantages
Forging ensures: Zero internal porosity for maximum structural integrity Superior torsional strength (typically 20-30% higher than cast equivalents) Fail-safe operation under dynamic loads (rated for SWL up to 500t in heavy-duty cranes)