A gyratory crusher beneath typically refers to the lower section or components of a gyratory crusher located below the main crushing chamber. Here’s a breakdown of key parts and functions:
Components Beneath a Gyratory Crusher:
1. Spider & Main Shaft Assembly
– The spider (top frame) supports the upper part of the crusher, while the main shaft extends downward into the crushing chamber.
– Below the crushing chamber, the shaft connects to the eccentric assembly.
2. Eccentric Drive Mechanism
– Located beneath the crushing head, this includes:
– Eccentric bushing: Causes the gyrating motion of the main shaft.
– Pinion & Gear: Transmit power from the motor to rotate the eccentric.
3. Bottom Shell & Discharge Area
– The lower shell houses:
– Countershaft bearings: Support rotational movement.
– Dust seal & lubrication system: Prevents contamination and ensures smooth operation.
4. Discharge Opening & Mantle Concave Gap
– Crushed material exits through the bottom discharge gap, which is adjustable to control product size.
5. Hydraulic System (if equipped)
– Some gyratory crushers use hydraulic systems beneath for:
– Adjusting the crusher setting (CSS
– Clearing blockages (“tramp release”).
Key Considerations for Maintenance:
– Regularly inspect wear parts (mantle, concave).
– Monitor lubrication and cooling systems to prevent overheating.
– Check eccentric bushings and bearings for wear.
Would you like details on installation, troubleshooting, or specific models?
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