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What is the excavator bearing ball?

2021-05-19 09:50:18
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Starting from the strict test of all the key factors, excavator bearing balls are produced on special machines. Heat treatment is one of the most important operations, which provides the required strength and hardness to excavator bearing balls.Heat treatment makes the balls tough and wear-resistant.


Professional Volvo excavator accessories manufacturers think that excavator bearing metal ball is a rolling spherical element, used for inspection and ball valves, bearings and other mechanical devices to provide rotation or linear motion.They are usually made of alloy steel, carbon steel, or stainless steel.The size characteristics of excavator bearing ball are outer diameter, allowable deviation, surface roughness and tolerance.The outside diameter is the overall width or average diameter of the ball.The allowable deviation is the maximum radial distance between a radial plane on the surface of the metal sphere and any point on the sphere surface.Surface roughness measures irregularities on the surface, but not significant deviations.The basic diameter tolerance is the maximum allowable deviation of the average diameter from the diameter specified.
Excavator bearing ball



Excavator bearing ball



Excavator bearing ball is a rolling spherical element, used for inspection and ball valves, bearings and other mechanical devices to provide rotation or linear motion.They are made of inorganic, non-metallic materials and processed at high temperatures.Many ceramic balls can achieve extremely high surface finish.Therefore, compared with the excavator bearing metal ball, the friction coefficient of the ceramic ball is extremely low.The hardness of many excavator bearing ceramic balls is much higher than that of steel balls, thus prolongs the life and improves the reliability.Ceramic ball has the characteristics of high stiffness, low thermal expansion, light weight, corrosion resistance and electrical resistance.There are a wide range of silicon nitride ceramic ball, alumina ceramic ball and zirconia ceramic ball.