Classification
Ball mill bearing bushing
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Product details
I. Basic Definition and Core Function
The ball bearing bushing, also known as the spherical bushing or the main bearing bushing, is the core load-bearing component of the main sliding bearings at both ends of the ball mill. It belongs to a low-speed heavy-load sliding friction pair. The entire weight of the mill cylinder, steel balls, and materials is borne by the two end bushings. Assembly section of the bearing
Core Function
1. Load-bearing and self-aligning: The bottom is a convex spherical surface, which fits the concave spherical surface of the bearing seat, allowing for slight self-adjustment to ensure uniform contact between the hollow shaft and the bushing surface, avoiding local crushing;
2. Reducing friction and lubricating: The inner surface is a pitch-bonded alloy layer, which forms an oil film with the hollow shaft neck, significantly reducing the rotational friction resistance;
3. Heat dissipation and buffering: Conveying frictional heat and buffering the impact load of the mill operation;
4. Protecting the hollow shaft: The soft alloy layer wears out first, protecting the more expensive hollow shaft.
II. Overall Structure (Double-layer Composite Structure)
The bushing is composed of a cast iron base + pitch-bonded alloy layer, with an overall shape of a semi-circular arc:
1. Bushing back (base) Material: HT200/HT250 gray cast iron, the bottom is machined into a convex spherical surface, the side is equipped with high-pressure oil holes, temperature measurement holes, and cooling water channels; high strength and good rigidity, transmitting all loads to the bearing base.
2.
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Smelting equipment (blast furnace, converter, electric furnace supporting equipment)
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