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Causes of damage to bicycle sprocket cranks

  • Categories:Company news
  • Author:
  • Origin:
  • Time of issue:2020-06-20
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(Summary description)The operation mode of the sprocket crank is that the
crank power comes from the foot pedal.

Causes of damage to bicycle sprocket cranks

(Summary description)The operation mode of the sprocket crank is that the
crank power comes from the foot pedal.

  • Categories:Company news
  • Author:
  • Origin:
  • Time of issue:2020-06-20
  • Views:0
Information

The operation mode of the sprocket crank is that the crank power comes from the foot pedal. The pedal and the crank are connected by a screw connection. In order to step on the pedal, the crank is driven by the crank to drive the central shaft. The crank and the central shaft are connected by fixed pins. . Then, the sprocket is driven by the middle shaft, and the middle shaft and the sprocket are connected by a flat key. Let's take a detailed look at the factors that damage the sprocket crank:

When the sprocket crank friction pair is in operation, one is that the lubricating oil has a low viscosity, the speed is too low, and the load is too large to establish an oil film; the second is that the circumferential speed is too large and the load is too heavy, which causes sliding rolling and lubricating oil. Poor quality grades, different degrees of adhesive wear caused by unsuitable viscosity, lack of oil, etc.; Third, particles and other particles in the lubrication system mixed with external dust and internal abrasive debris, colloids and other impurities caused particle wear; Fourth, in the cycle The repeated action of cyclic contact stress will cause fatigue wear of the gears, and cause pitting, peeling and fracture of the sprocket crank surface materials. Fifth, water, metal particles, chemical contaminants, etc. are mixed into the lubrication system.

In short, the damage of the sprocket crank is the damage caused by friction, pitting, rupture, etc. caused by the sliding, rolling, impact, and interaction of the lubricant and the friction pair during the operation of the gear.

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